{"id":76474,"date":"2010-03-10T00:00:00","date_gmt":"2010-03-10T00:00:00","guid":{"rendered":"https:\/\/discover.restek.com\/?p=76474"},"modified":"2025-12-23T03:54:40","modified_gmt":"2025-12-23T03:54:40","slug":"what-is-my-source-temperature-and-why-do-i-care","status":"publish","type":"post","link":"https:\/\/discover.restek.com\/fr\/blogs-ja\/gnbl5552\/what-is-my-source-temperature-and-why-do-i-care","title":{"rendered":"What is my Source Temperature and why do I care?"},"content":{"rendered":"\n<figure class=\"wp-block-image size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"946\" height=\"522\" src=\"https:\/\/discover.restek.com\/wp-content\/uploads\/blog-what-is-my-source-temperature-and-why-do-i-care-01.gif\" alt=\"\" class=\"wp-image-76726\" title=\"-\"><\/figure>\n\n\n\n<p>The MS source temperature is a setting that can be made on an Agilent 7890A\/5975C GC\/MS. Auto-tunes typically have some sort of default setting. For example a DFTPP specific tune, used for EPA Method 8270, has a default source temp of 230\u00b0C. However, if you increase the source temperature, improved peak shape of late eluting analytes such as PAHs results. You may think great! I am going to jack up that source temperature as high as it will go and I will have awesome peak shape. Well, hold on to those horses. Of course all great things come at a cost. The price you pay for better peak shape is stronger fragmentation of your analytes. This could result in a decrease of your quant ion. Check out the figure to see how changing the MS source temp from 230\u00b0C to 250\u00b0C to 300\u00b0C results in better peak shape, but also how it affects 2,4-DNP response. It turns out 250\u00b0C looks like the sweet spot for a happy marriage between peak shape and compound response.<\/p>\n\n\n\n<div style=\"height:100px\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n","protected":false},"excerpt":{"rendered":"<p>The MS source temperature is a setting that can be made on an Agilent 7890A\/5975C GC\/MS. Auto-tunes typically have some sort of default setting. For example a DFTPP specific tune, used for EPA Method 8270, has a default source temp&#8230;<\/p>\n","protected":false},"author":5,"featured_media":0,"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":[794],"tags":[],"industries-application":[],"post-badge":[],"resource-type":[],"product-library":[],"resource-technique":[],"hf_cat_post":[623],"ppma_author":[600],"class_list":["post-76474","post","type-post","status-publish","format-standard","hentry","category-blogs-ja"],"acf":[],"taxonomy_info":{"category":[{"value":794,"label":"Blogs"}]},"featured_image_src_large":false,"author_info":{"display_name":"Brenda Cogan","author_link":"https:\/\/discover.restek.com\/fr\/author\/brenda-coganrestek-com\/"},"comment_info":0,"category_info":[{"term_id":794,"name":"Blogs","slug":"blogs-ja","term_group":0,"term_taxonomy_id":794,"taxonomy":"category","description":"","parent":0,"count":442,"filter":"raw","cat_ID":794,"category_count":442,"category_description":"","cat_name":"Blogs","category_nicename":"blogs-ja","category_parent":0}],"tag_info":false,"authors":[{"term_id":600,"user_id":0,"is_guest":1,"slug":"michelle-misselwitz","display_name":"Michelle Misselwitz","avatar_url":"https:\/\/secure.gravatar.com\/avatar\/?s=96&d=mm&r=g","0":null,"1":"","2":"","3":"","4":"","5":"","6":"","7":"","8":""}],"_links":{"self":[{"href":"https:\/\/discover.restek.com\/fr\/wp-json\/wp\/v2\/posts\/76474","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/discover.restek.com\/fr\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/discover.restek.com\/fr\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/discover.restek.com\/fr\/wp-json\/wp\/v2\/users\/5"}],"replies":[{"embeddable":true,"href":"https:\/\/discover.restek.com\/fr\/wp-json\/wp\/v2\/comments?post=76474"}],"version-history":[{"count":1,"href":"https:\/\/discover.restek.com\/fr\/wp-json\/wp\/v2\/posts\/76474\/revisions"}],"predecessor-version":[{"id":76733,"href":"https:\/\/discover.restek.com\/fr\/wp-json\/wp\/v2\/posts\/76474\/revisions\/76733"}],"wp:attachment":[{"href":"https:\/\/discover.restek.com\/fr\/wp-json\/wp\/v2\/media?parent=76474"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/discover.restek.com\/fr\/wp-json\/wp\/v2\/categories?post=76474"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/discover.restek.com\/fr\/wp-json\/wp\/v2\/tags?post=76474"},{"taxonomy":"industries-application","embeddable":true,"href":"https:\/\/discover.restek.com\/fr\/wp-json\/wp\/v2\/industries-application?post=76474"},{"taxonomy":"post-badge","embeddable":true,"href":"https:\/\/discover.restek.com\/fr\/wp-json\/wp\/v2\/post-badge?post=76474"},{"taxonomy":"resource-type","embeddable":true,"href":"https:\/\/discover.restek.com\/fr\/wp-json\/wp\/v2\/resource-type?post=76474"},{"taxonomy":"product-library","embeddable":true,"href":"https:\/\/discover.restek.com\/fr\/wp-json\/wp\/v2\/product-library?post=76474"},{"taxonomy":"resource-technique","embeddable":true,"href":"https:\/\/discover.restek.com\/fr\/wp-json\/wp\/v2\/resource-technique?post=76474"},{"taxonomy":"hf_cat_post","embeddable":true,"href":"https:\/\/discover.restek.com\/fr\/wp-json\/wp\/v2\/hf_cat_post?post=76474"},{"taxonomy":"author","embeddable":true,"href":"https:\/\/discover.restek.com\/fr\/wp-json\/wp\/v2\/ppma_author?post=76474"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}