{"id":43418,"date":"2020-10-21T00:00:00","date_gmt":"2020-10-21T00:00:00","guid":{"rendered":"https:\/\/discover.restek.com\/uncategorized\/anatomie-der-pfas-lc-saulen-welche-phase-welche-dimensionen-und-welcher-partikeltyp-sind-am-besten\/"},"modified":"2026-01-28T22:20:13","modified_gmt":"2026-01-28T22:20:13","slug":"anatomie-der-pfas-lc-saulen-welche-phase-welche-dimensionen-und-welcher-partikeltyp-sind-am-besten","status":"publish","type":"post","link":"https:\/\/discover.restek.com\/de\/artikel\/evar3069-de\/anatomie-der-pfas-lc-saulen-welche-phase-welche-dimensionen-und-welcher-partikeltyp-sind-am-besten","title":{"rendered":"Anatomie der PFAS LC-S\u00e4ulen: Welche Phase, welche Dimensionen und welcher Partikeltyp sind am besten?"},"content":{"rendered":"\n<p>Wenn Sie in einem der vielen Labore arbeiten, die routinem\u00e4\u00dfig Proben auf Per- und Polyfluoralkylsubstanzen (PFAS) testen, wissen Sie, dass diese Verbindungen in letzter Zeit zunehmend ins \u00f6ffentliche Bewusstsein ger\u00fcckt sind, da wir immer mehr \u00fcber die Verbreitung, die Persistenz und die potenziellen Gesundheitsrisiken dieser \u201eewigen Chemikalien\u201c lernen. Mit zunehmendem Interesse steigt auch der Bedarf an schnellen und pr\u00e4zisen Nachweisen. Diese Nachfrage treibt die Entwicklung besserer Methoden voran, und das beginnt mit der Wahl einer geeigneten LC-S\u00e4ule. Dies ist besonders wichtig, da die Liste der zu \u00fcberwachenden PFAS zunehmend Verbindungen mit immer k\u00fcrzeren Alkylketten umfasst. Hier zeigen wir Ihnen die Parameter, die bei der Auswahl einer LC-S\u00e4ule f\u00fcr die PFAS-Analyse wichtig sind.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">Auswahl der station\u00e4ren Phase und der S\u00e4ulendimension<\/h2>\n\n\n\n<p>Der erste Schritt bei der Auswahl der geeigneten PFAS LC-S\u00e4ule ist, eine effektive station\u00e4re Phase zu finden. Dazu m\u00fcssen Sie wissen, welches Spektrum von PFAS Sie untersuchen m\u00f6chten.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">Kurzkettige und l\u00e4ngerkettige PFAS<\/h3>\n\n\n\n<p>F\u00fcr kurzkettige PFAS (C4-C6) und l\u00e4ngerkettige PFAS haben unsere Untersuchungen an unterschiedlichen Phasen gezeigt, dass die C18-Phase die beste Wahl ist. Je l\u00e4nger die Alkylkette der PFAS-Molek\u00fcle, desto st\u00e4rker sind die Wechselwirkungen zwischen diesen Ketten und dem C18-Liganden, was zu einer guten Retention und Aufl\u00f6sung f\u00fchrt. Die Retention ist so stark, dass eine kurze und schmale S\u00e4ule verwendet werden kann, um die Analyten schnell und effektiv zu trennen. Das Besipiel in Abbildung 1 zeigt, dass eine 50&#215;2.1 mm Raptor C18-S\u00e4ule ausreicht, um die gew\u00fcnschten Verbindungen innerhalb von 8 Minuten (10 Minuten Gesamtanalysezeit) zu trennen. Hierbei werden alle Kriterien der EPA-Methode 537.1 f\u00fcr die Pr\u00fcfung von Trinkwasser erf\u00fcllt.&nbsp;<\/p>\n\n\n<div class=\"wp-block-custom-chromatogram-article-top\"><div class=\"chromatogram-article-placeholder\"><div class=\"figure-heading\"><strong>Abbildung 1:<\/strong>\u00a0Eine 50 x 2.1\u202fmm Raptor C18-S\u00e4ule ist eine ausgezeichnete Wahl f\u00fcr eine PFAS LC-S\u00e4ule; sie erf\u00fcllt alle Kriterien der EPA-Methode 537.1 bei einer Gesamtanalysezeit von nur 10 Minuten.<\/div><div class='chromatogram-article-inner-full'><div class=\"chromatogram-article-inner\">\n<div class=\"wp-block-custom-chromatogram-article\"><div class=\"wp-block-custom-chromatogram-article\"><div class=\"chromatogram-image regular-image\"><img decoding=\"async\" src=\"https:\/\/ez.restek.com\/images\/cgram\/lc_ev0560.png\" alt=\"EPA Method 537.1 on Raptor C18\" title=\"-\"><\/div><p class=\"article-id\" style=\"text-align:center\"> LC_EV0560<\/p><div class=\"chromatogram-peaks\"><h4>Peaks<\/h4><table class=\"peaks col-lg-6 col-12 peak-50\">\n<thead><tr><th><\/th><th style=\"text-align: left;width: 75px\">Peaks<\/th><th style=\"text-align: center;width: 75px\">t<sub>R<\/sub> (min)<\/th><th style=\"text-align: center;width: 75px\">Conc.<br \/>(ng\/mL)<\/th><th style=\"text-align: center;width: 75px\">Precursor Ion<\/th><th style=\"text-align: center;width: 75px\">Product Ion<\/th><\/tr><\/thead>\n<tbody><tr><td class=\"num\">1.<\/td><td class=\"cmpd\"><a class=\"cmpd_link\" title=\"View compound information for Perfluorobutanesulfonic acid (PFBS)\" href=\"https:\/\/ez.restek.com\/compound\/view\/en\/375-73-5\/Perfluorobutanesulfonic acid\" target=\"_blank\" rel=\"noopener\">Perfluorobutanesulfonic acid (PFBS)<\/a><\/td><td class=\"oth\">2.06<\/td><td class=\"oth\">10<\/td><td class=\"oth\">298.8<\/td><td class=\"oth\">79.9<\/td><\/tr>\n<tr><td class=\"num\">2.<\/td><td class=\"cmpd\">Perfluoro-n-[1,2-<sup>13<\/sup>C<sub>2<\/sub>]hexanoic acid (<sup>13<\/sup>C<sub>2<\/sub>-PFHxA)<\/td><td class=\"oth\">3.03<\/td><td class=\"oth\">5<\/td><td class=\"oth\">314.9<\/td><td class=\"oth\">270.0<\/td><\/tr>\n<tr><td class=\"num\">3.<\/td><td class=\"cmpd\"><a class=\"cmpd_link\" title=\"View compound information for Perfluorohexanoic acid (PFHxA)\" href=\"https:\/\/ez.restek.com\/compound\/view\/en\/307-24-4\/Perfluorohexanoic acid\" target=\"_blank\" rel=\"noopener\">Perfluorohexanoic acid (PFHxA)<\/a><\/td><td class=\"oth\">3.04<\/td><td class=\"oth\">5<\/td><td class=\"oth\">312.9<\/td><td class=\"oth\">268.7<\/td><\/tr>\n<tr><td class=\"num\">4.<\/td><td class=\"cmpd\">Tetrafluoro-2-heptafluoropropoxy-<sup>13<\/sup>C<sub>3<\/sub>-propanoic acid (<sup>13<\/sup>C<sub>3<\/sub>-HFPO-DA)<\/td><td class=\"oth\">3.36<\/td><td class=\"oth\">5<\/td><td class=\"oth\">286.8<\/td><td class=\"oth\">168.7<\/td><\/tr>\n<tr><td class=\"num\">5.<\/td><td class=\"cmpd\"><a class=\"cmpd_link\" title=\"View compound information for Hexafluoropropylene oxide dimer acid (HFPO-DA)\" href=\"https:\/\/ez.restek.com\/compound\/view\/en\/13252-13-6\/Hexafluoropropylene oxide dimer acid\" target=\"_blank\" rel=\"noopener\">Hexafluoropropylene oxide dimer acid (HFPO-DA)<\/a><\/td><td class=\"oth\">3.38<\/td><td class=\"oth\">5<\/td><td class=\"oth\">285.0<\/td><td class=\"oth\">168.9<\/td><\/tr>\n<tr><td class=\"num\">6.<\/td><td class=\"cmpd\"><a class=\"cmpd_link\" title=\"View compound information for Perfluoroheptanoic acid (PFHpA)\" href=\"https:\/\/ez.restek.com\/compound\/view\/en\/375-85-9\/Perfluoroheptanoic acid\" target=\"_blank\" rel=\"noopener\">Perfluoroheptanoic acid (PFHpA)<\/a><\/td><td class=\"oth\">4.09<\/td><td class=\"oth\">5<\/td><td class=\"oth\">362.8<\/td><td class=\"oth\">318.8<\/td><\/tr>\n<tr><td class=\"num\">7.<\/td><td class=\"cmpd\"><a class=\"cmpd_link\" title=\"View compound information for Perfluorohexanesulfonic acid (PFHxS)\" href=\"https:\/\/ez.restek.com\/compound\/view\/en\/355-46-4\/Perfluorohexanesulfonic acid\" target=\"_blank\" rel=\"noopener\">Perfluorohexanesulfonic acid (PFHxS)<\/a><\/td><td class=\"oth\">4.22<\/td><td class=\"oth\">10<\/td><td class=\"oth\">398.8<\/td><td class=\"oth\">79.9<\/td><\/tr>\n<tr><td class=\"num\">8.<\/td><td class=\"cmpd\"><a class=\"cmpd_link\" title=\"View compound information for 4,8-Dioxa-3H-perfluorononanoic acid (ADONA)\" href=\"https:\/\/ez.restek.com\/compound\/view\/en\/919005-14-4\/4,8-Dioxa-3H-perfluorononanoic acid\" target=\"_blank\" rel=\"noopener\">4,8-Dioxa-3H-perfluorononanoic acid (ADONA)<\/a><\/td><td class=\"oth\">4.24<\/td><td class=\"oth\">5<\/td><td class=\"oth\">376.9<\/td><td class=\"oth\">250.7<\/td><\/tr>\n<tr><td class=\"num\">9.<\/td><td class=\"cmpd\">Perfluoro-[1,2-<sup>13<\/sup>C<sub>2<\/sub>]octanoic acid (<sup>13<\/sup>C<sub>2<\/sub>-PFOA)<\/td><td class=\"oth\">4.88<\/td><td class=\"oth\">5<\/td><td class=\"oth\">415.0<\/td><td class=\"oth\">370.0<\/td><\/tr>\n<tr><td class=\"num\">10.<\/td><td class=\"cmpd\"><a class=\"cmpd_link\" title=\"View compound information for Perfluorooctanoic acid (PFOA)\" href=\"https:\/\/ez.restek.com\/compound\/view\/en\/335-67-1\/Perfluorooctanoic acid\" target=\"_blank\" rel=\"noopener\">Perfluorooctanoic acid (PFOA)<\/a><\/td><td class=\"oth\">4.90<\/td><td class=\"oth\">5<\/td><td class=\"oth\">413.1<\/td><td class=\"oth\">368.9<\/td><\/tr>\n<tr><td class=\"num\">11.<\/td><td class=\"cmpd\"><a class=\"cmpd_link\" title=\"View compound information for Perfluorononanoic acid (PFNA)\" href=\"https:\/\/ez.restek.com\/compound\/view\/en\/375-95-1\/Perfluorononanoic acid\" target=\"_blank\" rel=\"noopener\">Perfluorononanoic acid (PFNA)<\/a><\/td><td class=\"oth\">5.54<\/td><td class=\"oth\">5<\/td><td class=\"oth\">462.9<\/td><td class=\"oth\">418.9<\/td><\/tr>\n<tr><td class=\"num\">12.<\/td><td class=\"cmpd\">Perfluoro-1-[1,2,3,4-<sup>13<\/sup>C<sub>4<\/sub>]octanesulfonic acid (<sup>13<\/sup>C<sub>4<\/sub>-PFOS)<\/td><td class=\"oth\">5.57<\/td><td class=\"oth\">10<\/td><td class=\"oth\">503.0<\/td><td class=\"oth\">80.0<\/td><\/tr>\n<\/tbody><\/table>\n<table class=\"peaks col-lg-6 col-12 peak-50\"><thead><tr><th><\/th><th style=\"text-align: left;width: 75px\">Peaks<\/th><th style=\"text-align: center;width: 75px\">t<sub>R<\/sub> (min)<\/th><th style=\"text-align: center;width: 75px\">Conc.<br \/>(ng\/mL)<\/th><th style=\"text-align: center;width: 75px\">Precursor Ion<\/th><th style=\"text-align: center;width: 75px\">Product Ion<\/th><\/tr><\/thead><tbody>\n<tr><td class=\"num\">13.<\/td><td class=\"cmpd\"><a class=\"cmpd_link\" title=\"View compound information for Perfluorooctanesulfonic acid (PFOS)\" href=\"https:\/\/ez.restek.com\/compound\/view\/en\/1763-23-1\/Perfluorooctanesulfonic acid\" target=\"_blank\" rel=\"noopener\">Perfluorooctanesulfonic acid (PFOS)<\/a><\/td><td class=\"oth\">5.58<\/td><td class=\"oth\">10<\/td><td class=\"oth\">498.9<\/td><td class=\"oth\">80.0<\/td><\/tr>\n<tr><td class=\"num\">14.<\/td><td class=\"cmpd\">9-Chlorohexadecafluoro-3-oxanone-1-sulfonic acid (9Cl-PF3ONS)<\/td><td class=\"oth\">5.88<\/td><td class=\"oth\">5<\/td><td class=\"oth\">530.8<\/td><td class=\"oth\">350.7<\/td><\/tr>\n<tr><td class=\"num\">15.<\/td><td class=\"cmpd\">Perfluoro-n-[1,2-<sup>13<\/sup>C<sub>2<\/sub>]decanoic acid (<sup>13<\/sup>C<sub>2<\/sub>-PFDA)<\/td><td class=\"oth\">6.08<\/td><td class=\"oth\">5<\/td><td class=\"oth\">514.9<\/td><td class=\"oth\">469.9<\/td><\/tr>\n<tr><td class=\"num\">16.<\/td><td class=\"cmpd\"><a class=\"cmpd_link\" title=\"View compound information for Perfluorodecanoic acid (PFDA)\" href=\"https:\/\/ez.restek.com\/compound\/view\/en\/335-76-2\/Perfluorodecanoic acid\" target=\"_blank\" rel=\"noopener\">Perfluorodecanoic acid (PFDA)<\/a><\/td><td class=\"oth\">6.08<\/td><td class=\"oth\">5<\/td><td class=\"oth\">512.9<\/td><td class=\"oth\">469.0<\/td><\/tr>\n<tr><td class=\"num\">17.<\/td><td class=\"cmpd\">N-deuteriomethylperfluoro-1-octanesulfonamidoacetic acid (d3-NMeFOSAA)<\/td><td class=\"oth\">6.28<\/td><td class=\"oth\">10<\/td><td class=\"oth\">572.9<\/td><td class=\"oth\">418.8<\/td><\/tr>\n<tr><td class=\"num\">18.<\/td><td class=\"cmpd\"><a class=\"cmpd_link\" title=\"View compound information for N-methyl perfluorooctanesulfonamidoacetic acid (NMeFOSAA)\" href=\"https:\/\/ez.restek.com\/compound\/view\/en\/2355-31-9\/N-methyl perfluorooctanesulfonamidoacetic acid\" target=\"_blank\" rel=\"noopener\">N-methyl perfluorooctanesulfonamidoacetic acid (NMeFOSAA)<\/a><\/td><td class=\"oth\">6.30<\/td><td class=\"oth\">10<\/td><td class=\"oth\">569.8<\/td><td class=\"oth\">418.8<\/td><\/tr>\n<tr><td class=\"num\">19.<\/td><td class=\"cmpd\">N-deuterioethylperfluoro-1-octanesulfonamidoacetic acid (d5-NEtFOSAA)<\/td><td class=\"oth\">6.51<\/td><td class=\"oth\">10<\/td><td class=\"oth\">588.9<\/td><td class=\"oth\">418.8<\/td><\/tr>\n<tr><td class=\"num\">20.<\/td><td class=\"cmpd\"><a class=\"cmpd_link\" title=\"View compound information for N-ethyl perfluorooctanesulfonamidoacetic acid (NEtFOSAA)\" href=\"https:\/\/ez.restek.com\/compound\/view\/en\/2991-50-6\/N-ethyl perfluorooctanesulfonamidoacetic acid\" target=\"_blank\" rel=\"noopener\">N-ethyl perfluorooctanesulfonamidoacetic acid (NEtFOSAA)<\/a><\/td><td class=\"oth\">6.52<\/td><td class=\"oth\">10<\/td><td class=\"oth\">583.8<\/td><td class=\"oth\">418.8<\/td><\/tr>\n<tr><td class=\"num\">21.<\/td><td class=\"cmpd\"><a class=\"cmpd_link\" title=\"View compound information for Perfluoroundecanoic acid (PFUnA)\" href=\"https:\/\/ez.restek.com\/compound\/view\/en\/2058-94-8\/Perfluoroundecanoic acid\" target=\"_blank\" rel=\"noopener\">Perfluoroundecanoic acid (PFUnA)<\/a><\/td><td class=\"oth\">6.55<\/td><td class=\"oth\">5<\/td><td class=\"oth\">562.9<\/td><td class=\"oth\">518.8<\/td><\/tr>\n<tr><td class=\"num\">22.<\/td><td class=\"cmpd\"><a class=\"cmpd_link\" title=\"View compound information for 11-chloroeicosafluoro-3-oxaundecane-1-sulfonic acid (11Cl-PF3OUdS)\" href=\"https:\/\/ez.restek.com\/compound\/view\/en\/763051-92-9\/11-chloroeicosafluoro-3-oxaundecane-1-sulfonic acid\" target=\"_blank\" rel=\"noopener\">11-chloroeicosafluoro-3-oxaundecane-1-sulfonic acid (11Cl-PF3OUdS)<\/a><\/td><td class=\"oth\">6.77<\/td><td class=\"oth\">5<\/td><td class=\"oth\">630.7<\/td><td class=\"oth\">451.0<\/td><\/tr>\n<tr><td class=\"num\">23.<\/td><td class=\"cmpd\"><a class=\"cmpd_link\" title=\"View compound information for Perfluorododecanoic acid (PFDoA)\" href=\"https:\/\/ez.restek.com\/compound\/view\/en\/307-55-1\/Perfluorododecanoic acid\" target=\"_blank\" rel=\"noopener\">Perfluorododecanoic acid (PFDoA)<\/a><\/td><td class=\"oth\">6.95<\/td><td class=\"oth\">5<\/td><td class=\"oth\">612.7<\/td><td class=\"oth\">568.9<\/td><\/tr>\n<tr><td class=\"num\">24.<\/td><td class=\"cmpd\"><a class=\"cmpd_link\" title=\"View compound information for Perfluorotridecanoic acid (PFTrDA)\" href=\"https:\/\/ez.restek.com\/compound\/view\/en\/72629-94-8\/Perfluorotridecanoic acid\" target=\"_blank\" rel=\"noopener\">Perfluorotridecanoic acid (PFTrDA)<\/a><\/td><td class=\"oth\">7.30<\/td><td class=\"oth\">5<\/td><td class=\"oth\">662.7<\/td><td class=\"oth\">618.8<\/td><\/tr>\n<tr><td class=\"num\">25.<\/td><td class=\"cmpd\"><a class=\"cmpd_link\" title=\"View compound information for Perfluorotetradecanoic acid (PFTA)\" href=\"https:\/\/ez.restek.com\/compound\/view\/en\/376-06-7\/Perfluorotetradecanoic acid\" target=\"_blank\" rel=\"noopener\">Perfluorotetradecanoic acid (PFTA)<\/a><\/td><td class=\"oth\">7.60<\/td><td class=\"oth\">5<\/td><td class=\"oth\">712.7<\/td><td class=\"oth\">668.7<\/td><\/tr>\n<\/tbody><\/table><\/div><div class=\"chromatogram-conditions\"><h4>Conditions<\/h4><div class=\"conditions-container container-fluid\"><div class=\"row\"><table class=\"conditions col-lg-6 col-12\"><tr><th class=\"conditions_header\" scope=\"row\">Column<\/th><td>Raptor C18  (<a target=\"_blank\" href=\"https:\/\/www.restek.com\/p\/9304A52?utm_source=chromatograms&amp;utm_medium=link&amp;utm_campaign=LC_EV0560\" rel=\"noopener\">cat.# 9304A52<\/a>)<\/td><\/tr><tr><th class=\"sub conditions_header\" scope=\"row\">Dimensions:<\/th><td>50 mm x 2.1 mm ID<\/td><\/tr><tr><th class=\"sub conditions_header\" scope=\"row\">Particle Size:<\/th><td>2.7 \u00b5m<\/td><\/tr><tr><th class=\"sub conditions_header\" scope=\"row\">Pore Size:<\/th><td>90 \u00c5<\/td><\/tr><tr><td><\/td><tr><th class=\"sub conditions_header\" scope=\"row\">Temp.:<\/th><td>40 \u00b0C<\/td><\/tr><tr class=\"cgram_header_row\"><th class=\"conditions_header\" scope=\"row\">Standard\/Sample<\/th><td><\/td><\/tr><tr><th class=\"sub conditions_header\" scope=\"row\">Diluent:<\/th><td>96:4 Methanol:water<\/td><\/tr><tr><th class=\"sub conditions_header\" scope=\"row\">Conc.:<\/th><td>5-10 ng\/mL<\/td><\/tr><td><\/td><\/tr><tr><th class=\"sub conditions_header\" scope=\"row\">Inj. Vol.:<\/th><td>2 \u00b5L <\/td><\/tr><tr class=\"cgram_header_row\"><th class=\"conditions_header\" scope=\"row\">Mobile Phase<\/th><td><\/td><\/tr><tr><th class=\"sub conditions_header\" scope=\"row\">A:<\/th><td>Water, 5 mM ammonium acetate <\/td><\/tr><tr><th class=\"sub conditions_header\" scope=\"row\">B:<\/th><td>Methanol <\/td><\/tr><tr><td><\/td><td><table class=\"cgram_ramp\"><thead><tr><th>Time (min)<\/th><th>Flow (mL\/min)<\/th><th>%A<\/th><th>%B<\/th><\/tr><\/thead><tbody><tr><td>0.00<\/td><td>0.4<\/td><td>70<\/td><td>30<\/td><\/tr><tr><td>8.00<\/td><td>0.4<\/td><td>10<\/td><td>90<\/td><\/tr><tr><td>8.01<\/td><td>0.4<\/td><td>70<\/td><td>30<\/td><\/tr><tr><td>10.0<\/td><td>0.4<\/td><td>70<\/td><td>30<\/td><\/tr><\/tbody><\/table><\/td><\/tr><\/table><table class=\"conditions col-lg-6 col-12\"><tr><th class=\"conditions_header\" scope=\"row\">Detector<\/th><td>MS\/MS<\/td><\/tr><tr><th class=\"sub conditions_header\" scope=\"row\">Ion Mode:<\/th><td>ESI- <\/td><\/tr><tr><th class=\"sub conditions_header\" scope=\"row\">Mode:<\/th><td>MRM <\/td><\/tr><tr class=\"cgram_header_row\"><th class=\"conditions_header\" scope=\"row\">Instrument<\/th><td>HPLC<\/td><\/tr><tr class=\"cgram_header_row\"><th class=\"conditions_header\" scope=\"row\">Notes<\/th><td>Want even better performance when analyzing metal-sensitive compounds? Check out Inert LC columns at <a href=\"https:\/\/www.restek.com\/inert\" target=\"_blank\" rel=\"noopener\">www.restek.com\/inert<\/a>.<\/td><\/tr><\/table><\/div><\/div><\/div><div class=\"chromatogram-pdf-link\"><a href=\"https:\/\/ez.restek.com\/images\/cgram\/lc_ev0560.pdf\" target=\"_blank\" rel=\"noopener noreferrer\"><svg xmlns=\"http:\/\/www.w3.org\/2000\/svg\" width=\"18\" height=\"18\" viewBox=\"0 0 18 18\"><g data-name=\"Group 2996\"><path data-name=\"Rectangle 1246\" d=\"M0 0h18v18H0z\" style=\"fill: none;\"><\/path><\/g><g data-name=\"Group 2997\"><path data-name=\"Path 729\" d=\"M13.412 11.4v2.017H5.345V11.4H4v2.017a1.349 1.349 0 0 0 1.345 1.345h8.068a1.349 1.349 0 0 0 1.345-1.345V11.4zm-.672-2.694-.948-.948-1.741 1.735V4H8.706v5.493L6.965 7.758l-.948.948 3.361 3.361z\" transform=\"translate(-.437 -.414)\" style=\"fill: rgb(13, 123, 196);\"><\/path><\/g><\/svg>Download PDF<\/a><\/div><\/div><\/div>\n<\/div><\/div><\/div>\n\n\n<div style=\"height:20px\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n\n\n\n<h3 class=\"wp-block-heading\">Ultra-kurzkettige PFAS<\/h3>\n\n\n\n<p>Als C8-PFAS verboten wurden, wurden andere Verbindungen mit k\u00fcrzeren Alkylketten kommerziell eingef\u00fchrt. Dadurch w\u00e4chst zum einen die Liste der zu analysierenden PFAS, zum anderen erhalten Verbindungen mit k\u00fcrzeren Ketten, die sogenannten \u201eultra-kurzkettigen\u201c Verbindungen (C2 und C3), mehr Aufmerksamkeit. Je k\u00fcrzer die Kohlenstoffkette desto gr\u00f6\u00dfer der Einfluss der polaren funktionellen Gruppe. Die Komponenten werden auf einer C18-S\u00e4ule immer schlechter retardiert, da deren Retentionsmechanismus in erster Linie auf den immer weniger werdenden hydrophoben Wechselwirkungen beruht.&nbsp;<\/p>\n\n\n\n<p>F\u00fcr C3-PFAS wie Perfluorpropans\u00e4ure (PFPrA) und Perfluorpropansulfons\u00e4ure (PFPrS) ist eine C18-Phase immer noch brauchbar, wenn geeignete S\u00e4ulendimensionen gew\u00e4hlt werden. In Abbildung 2 zeigt zum Beispiel eine 100 x 3.0 mm Raptor C18-S\u00e4ule eine gute Performance, wobei, auch mit C3-PFAS, die Probe in nur 11 Minuten problemlos analysiert werden kann.&nbsp;<\/p>\n\n\n<div class=\"wp-block-custom-chromatogram-article-top\"><div class=\"chromatogram-article-placeholder\"><div class=\"figure-heading\"><strong>Abbildung 2:<\/strong>\u00a0Die station\u00e4re C18-Phase auf Raptor Core-Shell-Material eignet sich auch f\u00fcr die effektive Trennung von kurzkettigen PFAS; dazu muss jedoch die S\u00e4ulendimension vergr\u00f6\u00dfert werden, um eine angemessene Retention zu gew\u00e4hrleisten.<\/div><div class='chromatogram-article-inner-full'><div class=\"chromatogram-article-inner\">\n<div class=\"wp-block-custom-chromatogram-article\"><div class=\"wp-block-custom-chromatogram-article\"><div class=\"chromatogram-image regular-image\"><img decoding=\"async\" src=\"https:\/\/ez.restek.com\/images\/cgram\/lc_ev0555.png\" alt=\"Ultra-short Chain, Legacy, and Alternative PFAS on Raptor C18 in Reagent Water\" title=\"-\"><\/div><p class=\"article-id\" style=\"text-align:center\"> LC_EV0555<\/p><div class=\"chromatogram-peaks\"><h4>Peaks<\/h4><table class=\"peaks col-lg-6 col-12 peak-50\">\n<thead><tr><th><\/th><th style=\"text-align: left;width: 75px\">Peaks<\/th><th style=\"text-align: center;width: 75px\">t<sub>R<\/sub> (min)<\/th><th style=\"text-align: center;width: 75px\">Conc.<br \/>(ng\/L)<\/th><th style=\"text-align: center;width: 75px\">Precursor Ion<\/th><th style=\"text-align: center;width: 75px\">Product Ion<\/th><\/tr><\/thead>\n<tbody><tr><td class=\"num\">1.<\/td><td class=\"cmpd\">Perfluoropropanoic acid (PFPrA)<\/td><td class=\"oth\">2.74<\/td><td class=\"oth\">80<\/td><td class=\"oth\">162.9<\/td><td class=\"oth\">119.0<\/td><\/tr>\n<tr><td class=\"num\">2.<\/td><td class=\"cmpd\"><a class=\"cmpd_link\" title=\"View compound information for Perfluorobutanoic acid (PFBA)\" href=\"https:\/\/ez.restek.com\/compound\/view\/en\/375-22-4\/Perfluorobutanoic acid\" target=\"_blank\" rel=\"noopener\">Perfluorobutanoic acid (PFBA)<\/a><\/td><td class=\"oth\">4.69<\/td><td class=\"oth\">80<\/td><td class=\"oth\">212.8<\/td><td class=\"oth\">169.0<\/td><\/tr>\n<tr><td class=\"num\">3.<\/td><td class=\"cmpd\">Perfluoropropanesulfonic acid (PFPrS)<\/td><td class=\"oth\">5.13<\/td><td class=\"oth\">80<\/td><td class=\"oth\">248.8<\/td><td class=\"oth\">79.6<\/td><\/tr>\n<tr><td class=\"num\">4.<\/td><td class=\"cmpd\"><a class=\"cmpd_link\" title=\"View compound information for Perfluorobutanesulfonic acid (PFBS)\" href=\"https:\/\/ez.restek.com\/compound\/view\/en\/375-73-5\/Perfluorobutanesulfonic acid\" target=\"_blank\" rel=\"noopener\">Perfluorobutanesulfonic acid (PFBS)<\/a><\/td><td class=\"oth\">6.14<\/td><td class=\"oth\">80<\/td><td class=\"oth\">298.8<\/td><td class=\"oth\">79.9<\/td><\/tr>\n<tr><td class=\"num\">5.<\/td><td class=\"cmpd\">Perfluoro-n-[1,2-<sup>13<\/sup>C<sub>2<\/sub>]hexanoic acid (<sup>13<\/sup>C<sub>2<\/sub>-PFHxA)<\/td><td class=\"oth\">6.75<\/td><td class=\"oth\">50<\/td><td class=\"oth\">314.9<\/td><td class=\"oth\">270.0<\/td><\/tr>\n<tr><td class=\"num\">6.<\/td><td class=\"cmpd\"><a class=\"cmpd_link\" title=\"View compound information for Hexafluoropropylene oxide-dimer acid (HFPO-DA)\" href=\"https:\/\/ez.restek.com\/compound\/view\/en\/13252-13-6\/Hexafluoropropylene oxide-dimer acid\" target=\"_blank\" rel=\"noopener\">Hexafluoropropylene oxide-dimer acid (HFPO-DA)<\/a><\/td><td class=\"oth\">6.92<\/td><td class=\"oth\">80<\/td><td class=\"oth\">285.0<\/td><td class=\"oth\">168.9<\/td><\/tr>\n<\/tbody><\/table>\n<table class=\"peaks col-lg-6 col-12 peak-50\"><thead><tr><th><\/th><th style=\"text-align: left;width: 75px\">Peaks<\/th><th style=\"text-align: center;width: 75px\">t<sub>R<\/sub> (min)<\/th><th style=\"text-align: center;width: 75px\">Conc.<br \/>(ng\/L)<\/th><th style=\"text-align: center;width: 75px\">Precursor Ion<\/th><th style=\"text-align: center;width: 75px\">Product Ion<\/th><\/tr><\/thead><tbody>\n<tr><td class=\"num\">7.<\/td><td class=\"cmpd\"><a class=\"cmpd_link\" title=\"View compound information for Ammonium 4,8-dioxa-3H-perfluorononanoate (ADONA)\" href=\"https:\/\/ez.restek.com\/compound\/view\/en\/919005-14-4\/Ammonium 4,8-dioxa-3H-perfluorononanoate\" target=\"_blank\" rel=\"noopener\">Ammonium 4,8-dioxa-3H-perfluorononanoate (ADONA)<\/a><\/td><td class=\"oth\">7.33<\/td><td class=\"oth\">80<\/td><td class=\"oth\">376.9<\/td><td class=\"oth\">250.7<\/td><\/tr>\n<tr><td class=\"num\">8.<\/td><td class=\"cmpd\"><a class=\"cmpd_link\" title=\"View compound information for Perfluorooctanoic acid (PFOA)\" href=\"https:\/\/ez.restek.com\/compound\/view\/en\/335-67-1\/Perfluorooctanoic acid\" target=\"_blank\" rel=\"noopener\">Perfluorooctanoic acid (PFOA)<\/a><\/td><td class=\"oth\">7.70<\/td><td class=\"oth\">80<\/td><td class=\"oth\">413.1<\/td><td class=\"oth\">368.9<\/td><\/tr>\n<tr><td class=\"num\">9.<\/td><td class=\"cmpd\">Perfluoro-[1,2-<sup>13<\/sup>C<sub>2<\/sub>]octanoic acid (<sup>13<\/sup>C<sub>2<\/sub>-PFOA)<\/td><td class=\"oth\">7.70<\/td><td class=\"oth\">50<\/td><td class=\"oth\">415.0<\/td><td class=\"oth\">370.0<\/td><\/tr>\n<tr><td class=\"num\">10.<\/td><td class=\"cmpd\"><a class=\"cmpd_link\" title=\"View compound information for Perfluorooctanesulfonic acid (PFOS)\" href=\"https:\/\/ez.restek.com\/compound\/view\/en\/1763-23-1\/Perfluorooctanesulfonic acid\" target=\"_blank\" rel=\"noopener\">Perfluorooctanesulfonic acid (PFOS)<\/a><\/td><td class=\"oth\">8.01<\/td><td class=\"oth\">80<\/td><td class=\"oth\">498.8<\/td><td class=\"oth\">80.0<\/td><\/tr>\n<tr><td class=\"num\">11.<\/td><td class=\"cmpd\">Perfluoro-[1,2,3,4-<sup>13<\/sup>C<sub>4<\/sub>]octanesulfonic acid (<sup>13<\/sup>C<sub>4<\/sub>-PFOS)<\/td><td class=\"oth\">8.01<\/td><td class=\"oth\">50<\/td><td class=\"oth\">503.0<\/td><td class=\"oth\">80.0<\/td><\/tr>\n<tr><td class=\"num\">12.<\/td><td class=\"cmpd\"><a class=\"cmpd_link\" title=\"View compound information for 9-Chlorohexadecafluoro-3-oxanonane-1-sulfonate (9Cl-PF3ONS)\" href=\"https:\/\/ez.restek.com\/compound\/view\/en\/756426-58-1\/9-Chlorohexadecafluoro-3-oxanonane-1-sulfonate\" target=\"_blank\" rel=\"noopener\">9-Chlorohexadecafluoro-3-oxanonane-1-sulfonate (9Cl-PF3ONS)<\/a><\/td><td class=\"oth\">8.15<\/td><td class=\"oth\">80<\/td><td class=\"oth\">530.8<\/td><td class=\"oth\">350.7<\/td><\/tr>\n<tr><td class=\"num\">13.<\/td><td class=\"cmpd\">11-Chloroeicosafluoro-3-oxanonane-1-sulfonate (11Cl-PF3OUdS)<\/td><td class=\"oth\">8.61<\/td><td class=\"oth\">80<\/td><td class=\"oth\">630.7<\/td><td class=\"oth\">451.0<\/td><\/tr>\n<\/tbody><\/table><\/div><div class=\"chromatogram-conditions\"><h4>Conditions<\/h4><div class=\"conditions-container container-fluid\"><div class=\"row\"><table class=\"conditions col-lg-6 col-12\"><tr><th class=\"conditions_header\" scope=\"row\">Column<\/th><td>Raptor C18  (<a target=\"_blank\" href=\"https:\/\/www.restek.com\/p\/9304A1E?utm_source=chromatograms&amp;utm_medium=link&amp;utm_campaign=LC_EV0555\" rel=\"noopener\">cat.# 9304A1E<\/a>)<\/td><\/tr><tr><th class=\"sub conditions_header\" scope=\"row\">Dimensions:<\/th><td>100 mm x 3 mm ID<\/td><\/tr><tr><th class=\"sub conditions_header\" scope=\"row\">Particle Size:<\/th><td>2.7 \u00b5m<\/td><\/tr><tr><th class=\"sub conditions_header\" scope=\"row\">Pore Size:<\/th><td>90 \u00c5<\/td><\/tr><tr><td><\/td><tr><th class=\"sub conditions_header\" scope=\"row\">Temp.:<\/th><td>40 \u00b0C<\/td><\/tr><tr class=\"cgram_header_row\"><th class=\"conditions_header\" scope=\"row\">Standard\/Sample<\/th><td><\/td><\/tr><tr><th class=\"sub conditions_header\" scope=\"row\">Conc.:<\/th><td>80  ppt<\/td><\/tr><td><\/td><\/tr><tr><th class=\"sub conditions_header\" scope=\"row\">Inj. Vol.:<\/th><td>10 \u00b5L <\/td><\/tr><tr class=\"cgram_header_row\"><th class=\"conditions_header\" scope=\"row\">Mobile Phase<\/th><td><\/td><\/tr><tr><th class=\"sub conditions_header\" scope=\"row\">A:<\/th><td>Water, 5 mM ammonium acetate <\/td><\/tr><tr><th class=\"sub conditions_header\" scope=\"row\">B:<\/th><td>Methanol <\/td><\/tr><tr><td><\/td><td><table class=\"cgram_ramp\"><thead><tr><th>Time (min)<\/th><th>Flow (mL\/min)<\/th><th>%A<\/th><th>%B<\/th><\/tr><\/thead><tbody><tr><td>0.00<\/td><td>0.25<\/td><td>80<\/td><td>20<\/td><\/tr><tr><td>7.00<\/td><td>0.25<\/td><td>5<\/td><td>95<\/td><\/tr><tr><td>9.00<\/td><td>0.25<\/td><td>5<\/td><td>95<\/td><\/tr><tr><td>9.01<\/td><td>0.25<\/td><td>80<\/td><td>20<\/td><\/tr><tr><td>11.0<\/td><td>0.25<\/td><td>80<\/td><td>20<\/td><\/tr><\/tbody><\/table><\/td><\/tr><\/table><table class=\"conditions col-lg-6 col-12\"><tr><th class=\"conditions_header\" scope=\"row\">Detector<\/th><td>MS\/MS<\/td><\/tr><tr><th class=\"sub conditions_header\" scope=\"row\">Ion Mode:<\/th><td>ESI- <\/td><\/tr><tr><th class=\"sub conditions_header\" scope=\"row\">Mode:<\/th><td>MRM <\/td><\/tr><tr class=\"cgram_header_row\"><th class=\"conditions_header\" scope=\"row\">Instrument<\/th><td>UHPLC<\/td><\/tr><tr class=\"cgram_header_row\"><th class=\"conditions_header\" scope=\"row\">Sample Preparation<\/th><td>In a polypropylene vial, 250 \u00b5L of reagent water (fortified at 80 ppt) was mixed with 250 \u00b5L of 40:60 reagent water:methanol and 5 \u00b5L of internal standard solution (5 ng\/mL of <sup>13<\/sup>C<sub>2<\/sub>-PFHxA, <sup>13<\/sup>C<sub>2<\/sub>-PFOA, <sup>13<\/sup>C<sub>4<\/sub>-PFOS in methanol). The vial was capped with a polyethylene cap prior to analysis.  <\/td><\/tr><tr class=\"cgram_header_row\"><th class=\"conditions_header\" scope=\"row\">Notes<\/th><td>A PFAS delay column (<a target=\"_blank\" href=\"https:\/\/www.restek.com\/p\/27854?utm_source=chromatograms&amp;utm_medium=link&amp;utm_campaign=LC_EV0555\" rel=\"noopener\">cat.# 27854<\/a>) was installed between the pump mixer and the injector.<br \/><br \/>Want even better performance when analyzing metal-sensitive compounds? Check out Inert LC columns at <a href=\"https:\/\/www.restek.com\/inert\" target=\"_blank\" rel=\"noopener\">www.restek.com\/inert<\/a>.<br \/><\/td><\/tr><\/table><\/div><\/div><\/div><div class=\"chromatogram-pdf-link\"><a href=\"https:\/\/ez.restek.com\/images\/cgram\/lc_ev0555.pdf\" target=\"_blank\" rel=\"noopener noreferrer\"><svg xmlns=\"http:\/\/www.w3.org\/2000\/svg\" width=\"18\" height=\"18\" viewBox=\"0 0 18 18\"><g data-name=\"Group 2996\"><path data-name=\"Rectangle 1246\" d=\"M0 0h18v18H0z\" style=\"fill: none;\"><\/path><\/g><g data-name=\"Group 2997\"><path data-name=\"Path 729\" d=\"M13.412 11.4v2.017H5.345V11.4H4v2.017a1.349 1.349 0 0 0 1.345 1.345h8.068a1.349 1.349 0 0 0 1.345-1.345V11.4zm-.672-2.694-.948-.948-1.741 1.735V4H8.706v5.493L6.965 7.758l-.948.948 3.361 3.361z\" transform=\"translate(-.437 -.414)\" style=\"fill: rgb(13, 123, 196);\"><\/path><\/g><\/svg>Download PDF<\/a><\/div><\/div><\/div>\n<\/div><\/div><\/div>\n\n\n<p>Sollten Sie C2-PFAS (z.B. Trifluoressigs\u00e4ure) auf Ihrer Liste der zu \u00fcberwachenden Verbindungen haben, ist eine alternative Phase erforderlich, die eine Wechselwirkung mit der polaren funktionellen Gruppe des PFAS-Molek\u00fcls eingeht. Der Wechsel von den haupts\u00e4chlich hydrophoben Wechselwirkungen einer C18-S\u00e4ule zu einer Raptor Polar X-S\u00e4ule gestattet die zus\u00e4tzliche Retention von ultra-kurzkettigen PFAS, da diese station\u00e4re Phase sowohl Ionenaustausch- als auch HILIC-Trennungsmodi erm\u00f6glicht. Neben ultra-kurzkettigen PFAS kann die Raptor Polar X-S\u00e4ule auch kurzkettige, traditionelle und alternative PFAS-Verbindungen in einem Lauf analysieren. Damit bietet sie die umfassendste PFAS-Methode in einer einzigen Analyse, wie in Abbildung 3 zu sehen ist.<\/p>\n\n\n<div class=\"wp-block-custom-chromatogram-article-top\"><div class=\"chromatogram-article-placeholder\"><div class=\"figure-heading\"><strong>Abbildung 3:<\/strong>\u00a0Die Raptor Polar X-S\u00e4ulen nutzen mehrere Retentionsmodi und sind die beste Wahl f\u00fcr die Analyse von ultrakurzkettigen, traditionellen und alternativen PFAS in einer einzigen Methode.<\/div><div class='chromatogram-article-inner-full'><div class=\"chromatogram-article-inner\">\n<div class=\"wp-block-custom-chromatogram-article\"><div class=\"wp-block-custom-chromatogram-article\"><div class=\"chromatogram-image regular-image\"><img decoding=\"async\" src=\"https:\/\/ez.restek.com\/images\/cgram\/lc_ev0569.png\" alt=\"Ultrashort- Through Long-Chain and Alternative PFAS on Raptor Polar X\" title=\"-\"><\/div><p class=\"article-id\" style=\"text-align:center\"> LC_EV0569<\/p><div class=\"chromatogram-peaks\"><h4>Peaks<\/h4><table class=\"peaks col-lg-6 col-12 peak-50\">\n<thead><tr><th><\/th><th style=\"text-align: left;width: 75px\">Peaks<\/th><th style=\"text-align: center;width: 75px\">t<sub>R<\/sub> (min)<\/th><th style=\"text-align: center;width: 75px\">Conc.<br \/>(ng\/L)<\/th><th style=\"text-align: center;width: 75px\">Precursor Ion<\/th><th style=\"text-align: center;width: 75px\">Product Ion<\/th><\/tr><\/thead>\n<tbody><tr><td class=\"num\">1.<\/td><td class=\"cmpd\">11-Chloroeicosafluoro-3-oxanonane-1-sulfonate (11CL-PF3OUdS)<\/td><td class=\"oth\">1.25<\/td><td class=\"oth\">400<\/td><td class=\"oth\">630.78<\/td><td class=\"oth\">450.80<\/td><\/tr>\n<tr><td class=\"num\">2.<\/td><td class=\"cmpd\">9-Chlorohexadecafluoro-3-oxanonane-1-sulfonate (9Cl-PF3ONS)<\/td><td class=\"oth\">1.34<\/td><td class=\"oth\">400<\/td><td class=\"oth\">530.78<\/td><td class=\"oth\">350.85<\/td><\/tr>\n<tr><td class=\"num\">3.<\/td><td class=\"cmpd\"><a class=\"cmpd_link\" title=\"View compound information for Perfluorooctanesulfonic acid (PFOS)\" href=\"https:\/\/ez.restek.com\/compound\/view\/en\/1763-23-1\/Perfluorooctanesulfonic acid\" target=\"_blank\" rel=\"noopener\">Perfluorooctanesulfonic acid (PFOS)<\/a><\/td><td class=\"oth\">1.38<\/td><td class=\"oth\">400<\/td><td class=\"oth\">498.84<\/td><td class=\"oth\">79.97<\/td><\/tr>\n<tr><td class=\"num\">4.<\/td><td class=\"cmpd\"><a class=\"cmpd_link\" title=\"View compound information for Perfluorohexanesulfonic acid (PFHxS)\" href=\"https:\/\/ez.restek.com\/compound\/view\/en\/355-46-4\/Perfluorohexanesulfonic acid\" target=\"_blank\" rel=\"noopener\">Perfluorohexanesulfonic acid (PFHxS)<\/a><\/td><td class=\"oth\">1.49<\/td><td class=\"oth\">400<\/td><td class=\"oth\">398.90<\/td><td class=\"oth\">79.97<\/td><\/tr>\n<tr><td class=\"num\">5.<\/td><td class=\"cmpd\"><a class=\"cmpd_link\" title=\"View compound information for Perfluorobutanesulfonic acid (PFBS)\" href=\"https:\/\/ez.restek.com\/compound\/view\/en\/375-73-5\/Perfluorobutanesulfonic acid\" target=\"_blank\" rel=\"noopener\">Perfluorobutanesulfonic acid (PFBS)<\/a><\/td><td class=\"oth\">1.64<\/td><td class=\"oth\">400<\/td><td class=\"oth\">298.97<\/td><td class=\"oth\">79.97<\/td><\/tr>\n<tr><td class=\"num\">6.<\/td><td class=\"cmpd\">Perfluoropropanesulfonic acid (PFPrS)<\/td><td class=\"oth\">1.73<\/td><td class=\"oth\">400<\/td><td class=\"oth\">248.97<\/td><td class=\"oth\">79.98<\/td><\/tr>\n<tr><td class=\"num\">7.<\/td><td class=\"cmpd\">Perfluoroethanesulfonic acid (PFEtS)<\/td><td class=\"oth\">1.86<\/td><td class=\"oth\">400<\/td><td class=\"oth\">198.98<\/td><td class=\"oth\">79.92<\/td><\/tr>\n<\/tbody><\/table>\n<table class=\"peaks col-lg-6 col-12 peak-50\"><thead><tr><th><\/th><th style=\"text-align: left;width: 75px\">Peaks<\/th><th style=\"text-align: center;width: 75px\">t<sub>R<\/sub> (min)<\/th><th style=\"text-align: center;width: 75px\">Conc.<br \/>(ng\/L)<\/th><th style=\"text-align: center;width: 75px\">Precursor Ion<\/th><th style=\"text-align: center;width: 75px\">Product Ion<\/th><\/tr><\/thead><tbody>\n<tr><td class=\"num\">8.<\/td><td class=\"cmpd\"><a class=\"cmpd_link\" title=\"View compound information for Hexafluoropropylene oxide dimer acid (HFPO-DA)\" href=\"https:\/\/ez.restek.com\/compound\/view\/en\/13252-13-6\/Hexafluoropropylene oxide dimer acid\" target=\"_blank\" rel=\"noopener\">Hexafluoropropylene oxide dimer acid (HFPO-DA)<\/a><\/td><td class=\"oth\">2.06<\/td><td class=\"oth\">400<\/td><td class=\"oth\">284.97<\/td><td class=\"oth\">168.92<\/td><\/tr>\n<tr><td class=\"num\">9.<\/td><td class=\"cmpd\"><a class=\"cmpd_link\" title=\"View compound information for Perfluorooctanoic acid (PFOA)\" href=\"https:\/\/ez.restek.com\/compound\/view\/en\/335-67-1\/Perfluorooctanoic acid\" target=\"_blank\" rel=\"noopener\">Perfluorooctanoic acid (PFOA)<\/a><\/td><td class=\"oth\">2.11<\/td><td class=\"oth\">400<\/td><td class=\"oth\">412.90<\/td><td class=\"oth\">368.91<\/td><\/tr>\n<tr><td class=\"num\">10.<\/td><td class=\"cmpd\"><a class=\"cmpd_link\" title=\"View compound information for Ammonium 4,8-dioxa-3H-perfluorononanoate (ADONA)\" href=\"https:\/\/ez.restek.com\/compound\/view\/en\/919005-14-4\/Ammonium 4,8-dioxa-3H-perfluorononanoate\" target=\"_blank\" rel=\"noopener\">Ammonium 4,8-dioxa-3H-perfluorononanoate (ADONA)<\/a><\/td><td class=\"oth\">2.15<\/td><td class=\"oth\">400<\/td><td class=\"oth\">376.90<\/td><td class=\"oth\">250.93<\/td><\/tr>\n<tr><td class=\"num\">11.<\/td><td class=\"cmpd\"><a class=\"cmpd_link\" title=\"View compound information for Perfluorohexanoic acid (PFHxA)\" href=\"https:\/\/ez.restek.com\/compound\/view\/en\/307-24-4\/Perfluorohexanoic acid\" target=\"_blank\" rel=\"noopener\">Perfluorohexanoic acid (PFHxA)<\/a><\/td><td class=\"oth\">2.36<\/td><td class=\"oth\">400<\/td><td class=\"oth\">312.97<\/td><td class=\"oth\">268.90<\/td><\/tr>\n<tr><td class=\"num\">12.<\/td><td class=\"cmpd\"><a class=\"cmpd_link\" title=\"View compound information for Perfluorobutanoic acid (PFBA)\" href=\"https:\/\/ez.restek.com\/compound\/view\/en\/375-22-4\/Perfluorobutanoic acid\" target=\"_blank\" rel=\"noopener\">Perfluorobutanoic acid (PFBA)<\/a><\/td><td class=\"oth\">2.76<\/td><td class=\"oth\">400<\/td><td class=\"oth\">212.97<\/td><td class=\"oth\">168.97<\/td><\/tr>\n<tr><td class=\"num\">13.<\/td><td class=\"cmpd\">Perfluoropropionic acid (PFPrA)<\/td><td class=\"oth\">3.06<\/td><td class=\"oth\">400<\/td><td class=\"oth\">163.03<\/td><td class=\"oth\">119.01<\/td><\/tr>\n<tr><td class=\"num\">14.<\/td><td class=\"cmpd\"><a class=\"cmpd_link\" title=\"View compound information for Trifluoroacetic acid (TFA)\" href=\"https:\/\/ez.restek.com\/compound\/view\/en\/76-05-1\/Trifluoroacetic acid\" target=\"_blank\" rel=\"noopener\">Trifluoroacetic acid (TFA)<\/a><\/td><td class=\"oth\">3.77<\/td><td class=\"oth\">400<\/td><td class=\"oth\">113.03<\/td><td class=\"oth\">69.01<\/td><\/tr>\n<\/tbody><\/table><\/div><div class=\"chromatogram-conditions\"><h4>Conditions<\/h4><div class=\"conditions-container container-fluid\"><div class=\"row\"><table class=\"conditions col-lg-6 col-12\"><tr><th class=\"conditions_header\" scope=\"row\">Column<\/th><td>Raptor Polar X  (<a target=\"_blank\" href=\"https:\/\/www.restek.com\/p\/9311A52?utm_source=chromatograms&amp;utm_medium=link&amp;utm_campaign=LC_EV0569\" rel=\"noopener\">cat.# 9311A52<\/a>)<\/td><\/tr><tr><th class=\"sub conditions_header\" scope=\"row\">Dimensions:<\/th><td>50 mm x 2.1 mm ID<\/td><\/tr><tr><th class=\"sub conditions_header\" scope=\"row\">Particle Size:<\/th><td>2.7 \u00b5m<\/td><\/tr><tr><td><\/td><tr><th class=\"sub conditions_header\" scope=\"row\">Temp.:<\/th><td>40 \u00b0C<\/td><\/tr><tr class=\"cgram_header_row\"><th class=\"conditions_header\" scope=\"row\">Standard\/Sample<\/th><td><\/td><\/tr><tr><th class=\"sub conditions_header\" scope=\"row\">Diluent:<\/th><td>50:50 Water:methanol<\/td><\/tr><tr><th class=\"sub conditions_header\" scope=\"row\">Conc.:<\/th><td>400  ng\/L<\/td><\/tr><td><\/td><\/tr><tr><th class=\"sub conditions_header\" scope=\"row\">Inj. Vol.:<\/th><td>10 \u00b5L <\/td><\/tr><tr class=\"cgram_header_row\"><th class=\"conditions_header\" scope=\"row\">Mobile Phase<\/th><td><\/td><\/tr><tr><th class=\"sub conditions_header\" scope=\"row\">A:<\/th><td>Water, 10 mM ammonium formate, 0.05% formic acid   <\/td><\/tr><tr><th class=\"sub conditions_header\" scope=\"row\">B:<\/th><td>60:40 Acetonitrile:methanol, 0.05% formic acid <\/td><\/tr><tr><td><\/td><td><table class=\"cgram_ramp\"><thead><tr><th>Time (min)<\/th><th>Flow (mL\/min)<\/th><th>%A<\/th><th>%B<\/th><\/tr><\/thead><tbody><tr><td>0.00<\/td><td>0.5<\/td><td>15<\/td><td>85<\/td><\/tr><tr><td>8.00<\/td><td>0.5<\/td><td>15<\/td><td>85<\/td><\/tr><\/tbody><\/table><\/td><\/tr><\/table><table class=\"conditions col-lg-6 col-12\"><tr><th class=\"conditions_header\" scope=\"row\">Detector<\/th><td>MS\/MS<\/td><\/tr><tr><th class=\"sub conditions_header\" scope=\"row\">Ion Mode:<\/th><td>ESI- <\/td><\/tr><tr><th class=\"sub conditions_header\" scope=\"row\">Mode:<\/th><td>MRM <\/td><\/tr><tr class=\"cgram_header_row\"><th class=\"conditions_header\" scope=\"row\">Instrument<\/th><td>UHPLC<\/td><\/tr><\/table><\/div><\/div><\/div><div class=\"chromatogram-pdf-link\"><a href=\"https:\/\/ez.restek.com\/images\/cgram\/lc_ev0569.pdf\" target=\"_blank\" rel=\"noopener noreferrer\"><svg xmlns=\"http:\/\/www.w3.org\/2000\/svg\" width=\"18\" height=\"18\" viewBox=\"0 0 18 18\"><g data-name=\"Group 2996\"><path data-name=\"Rectangle 1246\" d=\"M0 0h18v18H0z\" style=\"fill: none;\"><\/path><\/g><g data-name=\"Group 2997\"><path data-name=\"Path 729\" d=\"M13.412 11.4v2.017H5.345V11.4H4v2.017a1.349 1.349 0 0 0 1.345 1.345h8.068a1.349 1.349 0 0 0 1.345-1.345V11.4zm-.672-2.694-.948-.948-1.741 1.735V4H8.706v5.493L6.965 7.758l-.948.948 3.361 3.361z\" transform=\"translate(-.437 -.414)\" style=\"fill: rgb(13, 123, 196);\"><\/path><\/g><\/svg>Download PDF<\/a><\/div><\/div><\/div>\n<\/div><\/div><\/div>\n\n\n<div style=\"height:20px\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n\n\n\n<h2 class=\"wp-block-heading\">Auswahl der Partikelgr\u00f6\u00dfe und des Partikeltyps f\u00fcr die S\u00e4ule<\/h2>\n\n\n\n<p>Neben der Phase und den S\u00e4ulendimensionen spielen auch die Partikelgr\u00f6\u00dfe und der Partikeltyp eine Rolle. Letztlich ist ein 2.7 \u03bcm Core-Shell Partikel, wie der in Raptor-S\u00e4ulenreihe verwendete, die vielseitigste Wahl. LC-S\u00e4ulen f\u00fcr PFAS, die mit dieser Art von Partikeln hergestellt werden, bieten eine so effiziente Chromatografie, das sie mit der von vollpor\u00f6sen UHPLC-Partikeln (&lt; 2 \u00b5m) konkurrieren k\u00f6nnen. Dadurch k\u00f6nnen Labore sowohl mit UHPLC als auch mit HPLC-Anlagen schnelle und effiziente Analysen durchf\u00fchren.<\/p>\n\n\n\n<p>Die Wahl der Partikelgr\u00f6\u00dfe und des Partikeltyps kann sich jedoch abh\u00e4ngig von Ihrer Ger\u00e4teausstattung unterschiedlich stark auswirken. Labore, die mit traditionellen HPLC-Instrumenten arbeiten und regelm\u00e4\u00dfig mit vollpor\u00f6sen 5 \u03bcm-S\u00e4ulen arbeiten, sind m\u00f6glicherweise \u00fcberrascht von der Verbesserung, die sich mit einer Core-Shell-S\u00e4ule erzielen l\u00e4sst, unabh\u00e4ngig von der Partikelgr\u00f6\u00dfe. Mit Core-Shell-S\u00e4ulen l\u00e4sst sich auch im Druckbereich der meisten HPLC-Ger\u00e4te ohne Weiteres ihre chromatografischen Performance und Peakform verbessern. Schnellere Analysen mit der gleichen Ausr\u00fcstung sind eine unschlagbare Kombination f\u00fcr viele Labore, die den Probendurchsatz erh\u00f6hen m\u00f6chten \u2013 ohne die Investitionskosten f\u00fcr eine UHPLC-Anlage.&nbsp;<\/p>\n\n\n\n<p>F\u00fcr Labore, die bereits UHPLC-Ger\u00e4te verwenden, ist die Wahl der Partikelgr\u00f6\u00dfe, insbesondere bei Core-Shell-S\u00e4ulen weniger entscheidend im Hinblick auf die Effizienz und die Analysengeschwindigkeit. Abbildung 4 veranschaulicht die Auswirkung der Partikelgr\u00f6\u00dfe von Raptor Core-Shell-S\u00e4ulen auf die Analyse eines PFAS-Panels auf einem UHPLC-System. Obwohl die Peaks bei der S\u00e4ule mit 1.8 \u03bcm-Partikeln am schmalsten sind, in \u00dcbereinstimmung mit allgemeinen chromatografischen Prinzipien, war der Unterschied in der beobachteten Trenneffizienz bei 5 \u03bcm und 1.8 \u03bcm-S\u00e4ulen nicht signifikant. Der unterschiedliche R\u00fcckdruck, der bei diesen doch sehr \u00e4hnlichen Ergebnissen erzeugt wird, ist jedoch signifikant. Die R\u00fcckdr\u00fccke f\u00fcr S\u00e4ulen mit 5 \u03bcm und 2.7 \u03bcm-Partikeln liegen im Bereich herk\u00f6mmlicher HPLC-Ger\u00e4te. Bei der Nutzung dieser Core-Shell-S\u00e4ulen k\u00f6nnen Sie die Performance einer UHPLC ohne UHPLC-Druck erreichen.&nbsp;<\/p>\n\n\n<div class=\"wp-block-custom-chromatogram-article-top\"><div class=\"chromatogram-article-placeholder\"><div class=\"figure-heading\"><strong>Abbildung 4:<\/strong>\u00a0Bei Core-Shell-S\u00e4ulen kann mit unterschiedlichen Partikelgr\u00f6\u00dfen eine \u00e4hnliche chromatografische Leistung erzielt werden. Durch die Wahl von S\u00e4ulen mit 2.7 oder 5\u202f\u00b5m-Partikeln bleibt der Gegendruck jedoch innerhalb der Grenzen herk\u00f6mmlicher HPLC-Systeme. (Alle S\u00e4ulen haben die Abmessungen 50\u202fmm x 2.1 mm.)<\/div><div class='chromatogram-article-inner-full'><div class=\"chromatogram-article-inner\">\n\n<p><strong>1.8 \u00b5m Raptor C18<\/strong><br>6500\u20138000 psi<\/p>\n\n\n<div class=\"wp-block-custom-chromatogram-article\"><div class=\"wp-block-custom-chromatogram-article\"><div class=\"chromatogram-image regular-image\"><img decoding=\"async\" src=\"https:\/\/ez.restek.com\/images\/cgram\/lc_ev0540.png\" alt=\"Perfluorinated Compounds (PFCs) on Raptor C18 (1.8 \u03bcm)\" title=\"-\"><\/div><p class=\"article-id\" style=\"text-align:center\"> LC_EV0540<\/p><div class=\"chromatogram-pdf-link\"><a href=\"https:\/\/ez.restek.com\/images\/cgram\/lc_ev0540.pdf\" target=\"_blank\" rel=\"noopener noreferrer\"><svg xmlns=\"http:\/\/www.w3.org\/2000\/svg\" width=\"18\" height=\"18\" viewBox=\"0 0 18 18\"><g data-name=\"Group 2996\"><path data-name=\"Rectangle 1246\" d=\"M0 0h18v18H0z\" style=\"fill: none;\"><\/path><\/g><g data-name=\"Group 2997\"><path data-name=\"Path 729\" d=\"M13.412 11.4v2.017H5.345V11.4H4v2.017a1.349 1.349 0 0 0 1.345 1.345h8.068a1.349 1.349 0 0 0 1.345-1.345V11.4zm-.672-2.694-.948-.948-1.741 1.735V4H8.706v5.493L6.965 7.758l-.948.948 3.361 3.361z\" transform=\"translate(-.437 -.414)\" style=\"fill: rgb(13, 123, 196);\"><\/path><\/g><\/svg>Download PDF<\/a><\/div><\/div><\/div>\n\n\n<p><strong>2.7 \u00b5m Raptor C18<\/strong><br>4000\u20135500 psi<\/p>\n\n\n<div class=\"wp-block-custom-chromatogram-article\"><div class=\"wp-block-custom-chromatogram-article\"><div class=\"chromatogram-image regular-image\"><img decoding=\"async\" src=\"https:\/\/ez.restek.com\/images\/cgram\/lc_ev0551.png\" alt=\"Perfluorinated Compounds (PFCs) on Raptor C18 2.7 \u03bcm\" title=\"-\"><\/div><p class=\"article-id\" style=\"text-align:center\"> LC_EV0551<\/p><div class=\"chromatogram-pdf-link\"><a href=\"https:\/\/ez.restek.com\/images\/cgram\/lc_ev0551.pdf\" target=\"_blank\" rel=\"noopener noreferrer\"><svg xmlns=\"http:\/\/www.w3.org\/2000\/svg\" width=\"18\" height=\"18\" viewBox=\"0 0 18 18\"><g data-name=\"Group 2996\"><path data-name=\"Rectangle 1246\" d=\"M0 0h18v18H0z\" style=\"fill: none;\"><\/path><\/g><g data-name=\"Group 2997\"><path data-name=\"Path 729\" d=\"M13.412 11.4v2.017H5.345V11.4H4v2.017a1.349 1.349 0 0 0 1.345 1.345h8.068a1.349 1.349 0 0 0 1.345-1.345V11.4zm-.672-2.694-.948-.948-1.741 1.735V4H8.706v5.493L6.965 7.758l-.948.948 3.361 3.361z\" transform=\"translate(-.437 -.414)\" style=\"fill: rgb(13, 123, 196);\"><\/path><\/g><\/svg>Download PDF<\/a><\/div><\/div><\/div>\n\n\n<p><strong>5 \u00b5m Raptor C18<\/strong><br>2000\u20133500 psi<\/p>\n\n\n<div class=\"wp-block-custom-chromatogram-article\"><div class=\"wp-block-custom-chromatogram-article\"><div class=\"chromatogram-image regular-image\"><img decoding=\"async\" src=\"https:\/\/ez.restek.com\/images\/cgram\/lc_ev0541.png\" alt=\"Perfluorinated Compounds (PFCs) on Raptor C18 (5 \u03bcm)\" title=\"-\"><\/div><p class=\"article-id\" style=\"text-align:center\"> LC_EV0541<\/p><div class=\"chromatogram-pdf-link\"><a href=\"https:\/\/ez.restek.com\/images\/cgram\/lc_ev0541.pdf\" target=\"_blank\" rel=\"noopener noreferrer\"><svg xmlns=\"http:\/\/www.w3.org\/2000\/svg\" width=\"18\" height=\"18\" viewBox=\"0 0 18 18\"><g data-name=\"Group 2996\"><path data-name=\"Rectangle 1246\" d=\"M0 0h18v18H0z\" style=\"fill: none;\"><\/path><\/g><g data-name=\"Group 2997\"><path data-name=\"Path 729\" d=\"M13.412 11.4v2.017H5.345V11.4H4v2.017a1.349 1.349 0 0 0 1.345 1.345h8.068a1.349 1.349 0 0 0 1.345-1.345V11.4zm-.672-2.694-.948-.948-1.741 1.735V4H8.706v5.493L6.965 7.758l-.948.948 3.361 3.361z\" transform=\"translate(-.437 -.414)\" style=\"fill: rgb(13, 123, 196);\"><\/path><\/g><\/svg>Download PDF<\/a><\/div><\/div><\/div>\n<\/div><\/div><\/div>\n\n\n<p>Wenn es darum geht, maximale Effizienz zu erzielen \u2013 was oft gleichbedeutend mit kurzen Analysezeiten ist \u2013 und gleichzeitig den Gegendruck des Ger\u00e4ts so niedrig wie m\u00f6glich zu halten, ist eine Core-Shell-S\u00e4ule unschlagbar. F\u00fcr Labore, die seit vielen Jahren vollpor\u00f6se S\u00e4ulen verwenden und ihre Gewohnheiten nicht \u00e4ndern wollen, haben wir eine gute Nachricht: mit vollpor\u00f6sen S\u00e4ulen lassen sich PFAS ebenfalls erfolgreich analysieren. Die gr\u00f6\u00dfere Oberfl\u00e4che und Kohlenstoffbeladung einer vollpor\u00f6sen S\u00e4ule, wie z. B. einer Force C18-S\u00e4ule, f\u00fchrt zu einer h\u00f6heren chromatografischen Retention im Vergleich zu einer Core-Shell S\u00e4ule (Raptor C18) mit gleicher Partikelgr\u00f6\u00dfe (Abbildung 5).\u00a0<\/p>\n\n\n<div class=\"wp-block-custom-chromatogram-article-top\"><div class=\"chromatogram-article-placeholder\"><div class=\"figure-heading\"><strong>Abbildung 5<\/strong>: Wenn eine vollpor\u00f6se S\u00e4ule bevorzugt wird, bieten Force C18-S\u00e4ulen vergleichbar effektive Trennungen f\u00fcr PFAS, wie die Raptor Core-Shell-S\u00e4ulen. (Alle S\u00e4ulen haben die Abmessungen 50\u202fmm x 2.1\u202fmm.)<\/div><div class='chromatogram-article-inner-full'><div class=\"chromatogram-article-inner\">\n\n<p><strong>1.8 \u00b5m Raptor C18<\/strong><br>6500\u20138000 psi<\/p>\n\n\n<div class=\"wp-block-custom-chromatogram-article\"><div class=\"wp-block-custom-chromatogram-article\"><div class=\"chromatogram-image regular-image\"><img decoding=\"async\" src=\"https:\/\/ez.restek.com\/images\/cgram\/lc_ev0540.png\" alt=\"Perfluorinated Compounds (PFCs) on Raptor C18 (1.8 \u03bcm)\" title=\"-\"><\/div><p class=\"article-id\" style=\"text-align:center\"> LC_EV0540<\/p><div class=\"chromatogram-pdf-link\"><a href=\"https:\/\/ez.restek.com\/images\/cgram\/lc_ev0540.pdf\" target=\"_blank\" rel=\"noopener noreferrer\"><svg xmlns=\"http:\/\/www.w3.org\/2000\/svg\" width=\"18\" height=\"18\" viewBox=\"0 0 18 18\"><g data-name=\"Group 2996\"><path data-name=\"Rectangle 1246\" d=\"M0 0h18v18H0z\" style=\"fill: none;\"><\/path><\/g><g data-name=\"Group 2997\"><path data-name=\"Path 729\" d=\"M13.412 11.4v2.017H5.345V11.4H4v2.017a1.349 1.349 0 0 0 1.345 1.345h8.068a1.349 1.349 0 0 0 1.345-1.345V11.4zm-.672-2.694-.948-.948-1.741 1.735V4H8.706v5.493L6.965 7.758l-.948.948 3.361 3.361z\" transform=\"translate(-.437 -.414)\" style=\"fill: rgb(13, 123, 196);\"><\/path><\/g><\/svg>Download PDF<\/a><\/div><\/div><\/div>\n\n\n<p><strong>1.8 \u00b5m Force C18<\/strong><br>7550\u20139250 psi<\/p>\n\n\n<div class=\"wp-block-custom-chromatogram-article\"><div class=\"wp-block-custom-chromatogram-article\"><div class=\"chromatogram-image regular-image\"><img decoding=\"async\" src=\"https:\/\/ez.restek.com\/images\/cgram\/lc_ev0552.png\" alt=\"Perfluorinated Compounds (PFCs) on Force C18 (1.8 \u03bcm)\" title=\"-\"><\/div><p class=\"article-id\" style=\"text-align:center\"> LC_EV0552<\/p><div class=\"chromatogram-pdf-link\"><a href=\"https:\/\/ez.restek.com\/images\/cgram\/lc_ev0552.pdf\" target=\"_blank\" rel=\"noopener noreferrer\"><svg xmlns=\"http:\/\/www.w3.org\/2000\/svg\" width=\"18\" height=\"18\" viewBox=\"0 0 18 18\"><g data-name=\"Group 2996\"><path data-name=\"Rectangle 1246\" d=\"M0 0h18v18H0z\" style=\"fill: none;\"><\/path><\/g><g data-name=\"Group 2997\"><path data-name=\"Path 729\" d=\"M13.412 11.4v2.017H5.345V11.4H4v2.017a1.349 1.349 0 0 0 1.345 1.345h8.068a1.349 1.349 0 0 0 1.345-1.345V11.4zm-.672-2.694-.948-.948-1.741 1.735V4H8.706v5.493L6.965 7.758l-.948.948 3.361 3.361z\" transform=\"translate(-.437 -.414)\" style=\"fill: rgb(13, 123, 196);\"><\/path><\/g><\/svg>Download PDF<\/a><\/div><\/div><\/div>\n<\/div><\/div><\/div>\n\n\n<div style=\"height:20px\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n\n\n\n<h3 class=\"wp-block-heading\">Schlussfolgerung<\/h3>\n\n\n\n<p>Bei der Wahl der PFAS LC-S\u00e4ule bietet eine 2.7 \u03bcm Raptor Core-Shell-S\u00e4ule eine hervorragende Aufl\u00f6sung, kurze Laufzeiten und die Kompatibilit\u00e4t mit UHPLC- und HPLC-Ger\u00e4ten. Die Wahl der station\u00e4ren Phase ist abh\u00e4ngig vom Spektrum der zu \u00fcberwachenden PFAS. Eine Raptor C18-S\u00e4ule ist eine ausgezeichnete Wahl f\u00fcr PFAS bis hinunter zu Kettenl\u00e4ngen mit C3. F\u00fcr die umfassendste Einzelanalyse, die das gesamte Spektrum der ultra-kurzkettigen (C2-C3), kurzkettigen (C4-C6), l\u00e4ngerkettigen sowie alternativen PFAS einschlie\u00dft, ist die Raptor Polar X-S\u00e4ule die beste Wahl.<\/p>\n\n\n\n<p>Es ist zu beachten, dass bei der PFAS-Spurenanalyse mit einer Raptor C18-S\u00e4ule Blindwerte aus dem Systemuntergrund zu falsch positiven Ergebnissen oder f\u00e4lschlich erh\u00f6hten Signalen f\u00fchren k\u00f6nnen. Durch die Nutzung einer\u00a0PFAS Delay-S\u00e4ule. k\u00f6nnen diese Blindwerte, die mit den Probenanalyten koeluieren k\u00f6nnen, eliminiert werden. Um mehr \u00fcber dieses Begleitprodukt und seine Verwendung zu erfahren, lesen Sie den Artikel EVAR3001-UNV unter\u00a0restek.com.<\/p>\n\n\n\n<div style=\"height:50px\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n\n\n        <div class=\"cpb\">\n            <h3 class=\"cpb-heading\">Products Mentioned<\/h3>\n            <hr class=\"cpb-heading-underline\" \/>\n            <div class=\"cpb-list\">\n                                    <div class=\"cpb-item\">\n                        <div class=\"cpb-col cpb-col--left\">\n                            <a class=\"cpb-catalog\" target=\"_blank\" rel=\"noopener noreferrer\" href=\"https:\/\/de.restek.com\/p\/27854\">                                Catalog No. 27854                            <\/a>                        <\/div>\n                        <div class=\"cpb-col cpb-col--middle\">\n                            <div class=\"cpb-title\">PFAS Delay-S\u00e4ule, 5 \u00b5m, 50&#215;2.1 mm HPLC-S\u00e4ule<\/div>\n                        <\/div>\n                        <div class=\"cpb-col cpb-col--right\">\n                                                            <a class=\"cpb-view-btn\" target=\"_blank\" rel=\"noopener noreferrer\" href=\"https:\/\/de.restek.com\/p\/27854\">Produkt anzeigen<\/a>\n                                                    <\/div>\n                    <\/div>\n                            <\/div>\n        <\/div>\n        \n\n\n<div style=\"height:100px\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n","protected":false},"excerpt":{"rendered":"<p>Da sich die PFAS-Tests auf kurzkettige Verbindungen ausweiten, werden neue Methoden entwickelt. Dieser Artikel untersucht die Auswirkungen von Phase, Abmessungen und Partikeltypen und bietet Optionen, die schnelle und genaue Ergebnisse gew\u00e4hrleisten.<\/p>\n","protected":false},"author":11,"featured_media":6601,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"_kad_blocks_custom_css":"","_kad_blocks_head_custom_js":"","_kad_blocks_body_custom_js":"","_kad_blocks_footer_custom_js":"","_kadence_starter_templates_imported_post":false,"_kad_post_transparent":"","_kad_post_title":"","_kad_post_layout":"","_kad_post_sidebar_id":"","_kad_post_content_style":"","_kad_post_vertical_padding":"","_kad_post_feature":"","_kad_post_feature_position":"","_kad_post_header":false,"_kad_post_footer":false,"footnotes":""},"categories":[787],"tags":[],"industries-application":[2234,2230],"post-badge":[],"resource-type":[],"product-library":[2481,2499],"resource-technique":[2326,2328,2363],"ppma_author":[414],"class_list":["post-43418","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-artikel","industries-application-pfas-analyse","industries-application-umweltbereich","product-library-flussigchromatographie-produkte","product-library-lc-saulen","resource-technique-flussigchromatografie","resource-technique-massenspektrometrie-ms","resource-technique-ms-ms-de"],"acf":[],"taxonomy_info":{"category":[{"value":787,"label":"Artikel"}],"industries-application":[{"value":2234,"label":"PFAS Analyse"},{"value":2230,"label":"Umweltbereich"}],"product-library":[{"value":2481,"label":"Fl\u00fcssigchromatographie Produkte"},{"value":2499,"label":"LC S\u00e4ulen"}],"resource-technique":[{"value":2326,"label":"Fl\u00fcssigchromatografie"},{"value":2328,"label":"Massenspektrometrie (MS)"},{"value":2363,"label":"MS\/MS"}]},"featured_image_src_large":["https:\/\/discover.restek.com\/wp-content\/uploads\/feature-EVAR3069-1024x536.jpg",1024,536,true],"author_info":{"display_name":"Restek Corporation","author_link":"https:\/\/discover.restek.com\/de\/author\/restek-corporation\/"},"comment_info":0,"category_info":[{"term_id":787,"name":"Artikel","slug":"artikel","term_group":0,"term_taxonomy_id":787,"taxonomy":"category","description":"","parent":0,"count":469,"filter":"raw","cat_ID":787,"category_count":469,"category_description":"","cat_name":"Artikel","category_nicename":"artikel","category_parent":0}],"tag_info":false,"authors":[{"term_id":414,"user_id":11,"is_guest":0,"slug":"restek-corporation","display_name":"Restek Corporation","avatar_url":{"url":"https:\/\/discover.restek.com\/wp-content\/uploads\/Restek_Favicon_300x300.jpg","url2x":"https:\/\/discover.restek.com\/wp-content\/uploads\/Restek_Favicon_300x300.jpg"},"0":null,"1":"","2":"","3":"","4":"","5":"","6":"","7":"","8":""}],"_links":{"self":[{"href":"https:\/\/discover.restek.com\/de\/wp-json\/wp\/v2\/posts\/43418","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/discover.restek.com\/de\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/discover.restek.com\/de\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/discover.restek.com\/de\/wp-json\/wp\/v2\/users\/11"}],"replies":[{"embeddable":true,"href":"https:\/\/discover.restek.com\/de\/wp-json\/wp\/v2\/comments?post=43418"}],"version-history":[{"count":7,"href":"https:\/\/discover.restek.com\/de\/wp-json\/wp\/v2\/posts\/43418\/revisions"}],"predecessor-version":[{"id":85780,"href":"https:\/\/discover.restek.com\/de\/wp-json\/wp\/v2\/posts\/43418\/revisions\/85780"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/discover.restek.com\/de\/wp-json\/wp\/v2\/media\/6601"}],"wp:attachment":[{"href":"https:\/\/discover.restek.com\/de\/wp-json\/wp\/v2\/media?parent=43418"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/discover.restek.com\/de\/wp-json\/wp\/v2\/categories?post=43418"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/discover.restek.com\/de\/wp-json\/wp\/v2\/tags?post=43418"},{"taxonomy":"industries-application","embeddable":true,"href":"https:\/\/discover.restek.com\/de\/wp-json\/wp\/v2\/industries-application?post=43418"},{"taxonomy":"post-badge","embeddable":true,"href":"https:\/\/discover.restek.com\/de\/wp-json\/wp\/v2\/post-badge?post=43418"},{"taxonomy":"resource-type","embeddable":true,"href":"https:\/\/discover.restek.com\/de\/wp-json\/wp\/v2\/resource-type?post=43418"},{"taxonomy":"product-library","embeddable":true,"href":"https:\/\/discover.restek.com\/de\/wp-json\/wp\/v2\/product-library?post=43418"},{"taxonomy":"resource-technique","embeddable":true,"href":"https:\/\/discover.restek.com\/de\/wp-json\/wp\/v2\/resource-technique?post=43418"},{"taxonomy":"author","embeddable":true,"href":"https:\/\/discover.restek.com\/de\/wp-json\/wp\/v2\/ppma_author?post=43418"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}