{"id":42527,"date":"2018-09-25T04:00:00","date_gmt":"2018-09-25T04:00:00","guid":{"rendered":"https:\/\/discover.restek.com\/uncategorized\/choisir-un-insert-dinjection-en-gc\/"},"modified":"2026-01-28T19:19:13","modified_gmt":"2026-01-28T19:19:13","slug":"choisir-un-insert-dinjection-en-gc","status":"publish","type":"post","link":"https:\/\/discover.restek.com\/fr\/videos-fr\/gnav3656-fr\/choisir-un-insert-dinjection-en-gc","title":{"rendered":"Choisir un insert d\u2019injection en GC"},"content":{"rendered":"\n<figure class=\"wp-block-embed is-type-video is-provider-youtube wp-block-embed-youtube wp-embed-aspect-16-9 wp-has-aspect-ratio\"><div class=\"wp-block-embed__wrapper\">\n<iframe loading=\"lazy\" title=\"Selecting a GC Inlet Liner\" width=\"720\" height=\"405\" src=\"https:\/\/www.youtube.com\/embed\/40NqDKfUjP0?feature=oembed\" frameborder=\"0\" allow=\"accelerometer; autoplay; clipboard-write; encrypted-media; gyroscope; picture-in-picture; web-share\" referrerpolicy=\"strict-origin-when-cross-origin\" allowfullscreen><\/iframe>\n<\/div><\/figure>\n\n\n\n<h2 class=\"wp-block-heading\">Description&nbsp;<\/h2>\n\n\n\n<p>(sous-titres disponibles en fran\u00e7ais)<\/p>\n\n\n\n<p>Le transfert ad\u00e9quat de l\u2019\u00e9chantillon de l\u2019injecteur \u00e0 la colonne est un param\u00e8tre essentiel pour une bonne s\u00e9paration chromatographique en GC. Parmi les multiples facteurs qui jouent un r\u00f4le dans ce transfert d\u2019\u00e9chantillons, le premier est peut-\u00eatre le choix du meilleur insert. Regardons de plus pr\u00e8s ce qu\u2019il se passe pendant les injections \u201csplit\u201d et \u201csplitless\u201d pour comprendre comment choisir le bon insert d\u2019injection.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">Ressources compl\u00e9mentaires<\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li><a href=\"https:\/\/www.restek.com\/articles\/comment-choisir-un-insert-d-injection-gc\" target=\"_blank\" rel=\"noreferrer noopener\">Comment choisir le bon insert d\u2019injection en GC<\/a><\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\">Produits Restek associ\u00e9s<\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li><a href=\"https:\/\/www.restek.com\/c\/1210?Ns=restekProduct.x_productBadge%7C0\" target=\"_blank\" rel=\"noreferrer noopener\">Inserts d\u2019injection GC<\/a><\/li>\n<\/ul>\n\n\n\n<h2 class=\"wp-block-heading\">Transcription<\/h2>\n\n\n\n<p>Bonjour et bienvenue dans ce \u201cConseil Restek\u201d o\u00f9 nous parlerons des inserts d\u2019injection GC. Il se trouve que j\u2019aime beaucoup les inserts d\u2019injection GC. Je suis fascin\u00e9 par ce petit morceau de verre qui fait une telle diff\u00e9rence dans la qualit\u00e9 globale des analyses GC.<br>N\u2019oubliez pas que c\u2019est dans l\u2019insert GC que l\u2019\u00e9chantillon passe, dans la plupart des cas, de l\u2019\u00e9tat liquide \u00e0 l\u2019\u00e9tat gazeux avant d\u2019\u00eatre transf\u00e9r\u00e9 en t\u00eate de colonne. Le succ\u00e8s de l\u2019analyse d\u00e9pend du d\u00e9roulement de cette op\u00e9ration.Le choix de l\u2019insert ad\u00e9quat pour l\u2019application est donc capital. C\u2019est une d\u00e9cision importante mais heureusement, un nombre relativement restreint d\u2019inserts convient dans la plupart des cas. De plus, le choix s\u2019appuie principalement sur la technique d\u2019injection utilis\u00e9e.<\/p>\n\n\n\n<p>Commen\u00e7ons par les injections \u201csplit\u201d. Le d\u00e9bit \u00e0 l\u2019int\u00e9rieur de l\u2019insert est g\u00e9n\u00e9ralement tr\u00e8s rapide et le processus de vaporisation doit donc avoir lieu tr\u00e8s rapidement et de fa\u00e7on reproductible et repr\u00e9sentative. Il est donc important de mettre de la laine dans l\u2019insert pour que l\u2019\u00e9chantillon puisse s\u2019arr\u00eater et \u00eatre vaporis\u00e9. Surtout avec les passeurs d\u2019\u00e9chantillons qui injectent les \u00e9chantillons tr\u00e8s, tr\u00e8s rapidement dans l\u2019injecteur. La laine est souvent plac\u00e9e \u00e0 l\u2019endroit le plus chaud de l\u2019injecteur pour favoriser cette volatilisation. Un insert droit avec de la laine est donc un bon choix pour la plupart des injections \u201csplit\u201d.<\/p>\n\n\n\n<p>Par ailleurs, vous faites peut-\u00eatre des injections \u201csplitless\u201d. Et en mode \u201csplitless\u201d, le d\u00e9bit \u00e0 l\u2019int\u00e9rieur de l\u2019insert est beaucoup plus lent mais la laine est quand m\u00eame vivement recommand\u00e9e pour arr\u00eater l\u2019\u00e9chantillon lors de l\u2019injection et lui permettre de se volatiliser. L\u2019insert avec r\u00e9tr\u00e9cissement et laine est habituellement un bon choix pour la plupart des injections \u201csplitless\u201d. Il permet de transformer l\u2019\u00e9chantillon en gaz et de le transf\u00e9rer dans la colonne de mani\u00e8re reproductible et repr\u00e9sentative malgr\u00e9 ce d\u00e9bit bien plus lent.<\/p>\n\n\n\n<p>Pour r\u00e9sumer : des inserts droits avec de la laine pour les injections \u201csplit\u201d, et des inserts avec r\u00e9tr\u00e9cissement et laine pour les injections \u201csplitless\u201d. C\u2019est seulement si la pr\u00e9sence de laine pose probl\u00e8me qu\u2019il convient d\u2019explorer les autres g\u00e9om\u00e9tries d\u2019inserts disponibles.<\/p>\n\n\n\n<p>J\u2019adore les inserts. J\u2019esp\u00e8re que vous les aimez aussi et je suis heureux que vous ayez regard\u00e9 ce \u201cConseil Restek\u201d.<\/p>\n\n\n\n<div style=\"height:100px\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n","protected":false},"excerpt":{"rendered":"<p>Quel insert d&#8217;injection convient le mieux \u00e0 mon application ? Nous r\u00e9pondons \u00e0 cette question dans ce conseil Restek en vous guidant vers le choix du bon insert d&#8217;injection pour vos applications split&#8221; ou &#8220;splitless&#8221;.&#8221;<\/p>\n","protected":false},"author":11,"featured_media":41270,"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":[771],"tags":[],"industries-application":[],"post-badge":[],"resource-type":[],"product-library":[2458,2444],"resource-technique":[2316],"ppma_author":[414],"class_list":["post-42527","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-videos-fr","product-library-pieces-de-rechange-pour-injecteur","product-library-produits-pour-la-chromatographie-en-phase-gazeuse","resource-technique-chromatographie-en-phase-gazeuse-gc"],"acf":[],"taxonomy_info":{"category":[{"value":771,"label":"Vid\u00e9os"}],"product-library":[{"value":2458,"label":"Pi\u00e8ces de rechange pour injecteur"},{"value":2444,"label":"Produits pour la chromatographie en phase gazeuse"}],"resource-technique":[{"value":2316,"label":"Chromatographie en phase gazeuse (GC)"}]},"featured_image_src_large":["https:\/\/discover.restek.com\/wp-content\/uploads\/feature-GNAV3656-1024x536.jpg",1024,536,true],"author_info":{"display_name":"Restek Corporation","author_link":"https:\/\/discover.restek.com\/fr\/author\/restek-corporation\/"},"comment_info":0,"category_info":[{"term_id":771,"name":"Vid\u00e9os","slug":"videos-fr","term_group":0,"term_taxonomy_id":771,"taxonomy":"category","description":"","parent":0,"count":132,"filter":"raw","cat_ID":771,"category_count":132,"category_description":"","cat_name":"Vid\u00e9os","category_nicename":"videos-fr","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\/fr\/wp-json\/wp\/v2\/posts\/42527","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\/11"}],"replies":[{"embeddable":true,"href":"https:\/\/discover.restek.com\/fr\/wp-json\/wp\/v2\/comments?post=42527"}],"version-history":[{"count":4,"href":"https:\/\/discover.restek.com\/fr\/wp-json\/wp\/v2\/posts\/42527\/revisions"}],"predecessor-version":[{"id":85663,"href":"https:\/\/discover.restek.com\/fr\/wp-json\/wp\/v2\/posts\/42527\/revisions\/85663"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/discover.restek.com\/fr\/wp-json\/wp\/v2\/media\/41270"}],"wp:attachment":[{"href":"https:\/\/discover.restek.com\/fr\/wp-json\/wp\/v2\/media?parent=42527"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/discover.restek.com\/fr\/wp-json\/wp\/v2\/categories?post=42527"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/discover.restek.com\/fr\/wp-json\/wp\/v2\/tags?post=42527"},{"taxonomy":"industries-application","embeddable":true,"href":"https:\/\/discover.restek.com\/fr\/wp-json\/wp\/v2\/industries-application?post=42527"},{"taxonomy":"post-badge","embeddable":true,"href":"https:\/\/discover.restek.com\/fr\/wp-json\/wp\/v2\/post-badge?post=42527"},{"taxonomy":"resource-type","embeddable":true,"href":"https:\/\/discover.restek.com\/fr\/wp-json\/wp\/v2\/resource-type?post=42527"},{"taxonomy":"product-library","embeddable":true,"href":"https:\/\/discover.restek.com\/fr\/wp-json\/wp\/v2\/product-library?post=42527"},{"taxonomy":"resource-technique","embeddable":true,"href":"https:\/\/discover.restek.com\/fr\/wp-json\/wp\/v2\/resource-technique?post=42527"},{"taxonomy":"author","embeddable":true,"href":"https:\/\/discover.restek.com\/fr\/wp-json\/wp\/v2\/ppma_author?post=42527"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}