{"id":5089,"date":"2026-04-22T10:03:00","date_gmt":"2026-04-22T08:03:00","guid":{"rendered":"https:\/\/scispx.com\/?post_type=instruments&#038;p=5089"},"modified":"2026-04-22T10:03:36","modified_gmt":"2026-04-22T08:03:36","slug":"iso-dual-inlet-systeme-double-entree-pour-irms","status":"publish","type":"instruments","link":"https:\/\/scispx.com\/fr\/instruments\/iso-dual-inlet-systeme-double-entree-pour-irms\/","title":{"rendered":"Iso DUAL INLET"},"content":{"rendered":"<h2 data-start=\"266\" data-end=\"446\">Syst\u00e8me double entr\u00e9e haute pr\u00e9cision pour IRMS<\/h2>\n<p data-start=\"266\" data-end=\"446\">L\u2019Iso DUAL INLET d\u2019Elementar est un syst\u00e8me \u00e0 double entr\u00e9e haute pr\u00e9cision destin\u00e9 \u00e0 la spectrom\u00e9trie de masse des rapports isotopiques (DI\u2011IRMS). Il est id\u00e9al pour l\u2019analyse des gaz purs, des mat\u00e9riaux carbonat\u00e9s et des \u00e9chantillons d\u2019eau.<\/p>\n<p data-start=\"448\" data-end=\"821\">La technologie \u00e0 double entr\u00e9e est largement reconnue comme l\u2019approche la plus pr\u00e9cise, la plus exacte et la plus sensible pour l\u2019analyse isotopique de ces types d\u2019\u00e9chantillons. Comme la pr\u00e9cision instrumentale influence directement la qualit\u00e9 des donn\u00e9es, ce syst\u00e8me joue un r\u00f4le cl\u00e9 dans des applications telles que la recherche pal\u00e9oclimatique, o\u00f9 des mesures isotopiques extr\u00eamement fiables sont indispensables pour des reconstructions climatiques robustes.<\/p>\n<p data-start=\"5899\" data-end=\"5939\"><strong>Iso DUAL INLET fonctionne avec :<\/strong><\/p>\n<ul data-start=\"5940\" data-end=\"6144\">\n<li data-section-id=\"133fe40\" data-start=\"5940\" data-end=\"6012\"><a href=\"https:\/\/scispx.com\/fr\/instruments\/isoprime-precision-mass-spectrometer\/\" target=\"_blank\" rel=\"noopener\">isoprime precisION<\/a> IRMS pour \u03b4\u00b9\u00b3C, \u03b4\u00b9\u2075N, \u03b4\u00b3\u2074S, \u03b4\u00b9\u2078O, et analyse \u03b4\u00b2H<\/li>\n<li data-section-id=\"cjf1c4\" data-start=\"6013\" data-end=\"6079\">Suite logicielle lyticOS\u00ae pour une automatisation compl\u00e8te et le contr\u00f4le des m\u00e9thodes<\/li>\n<li data-section-id=\"uu2n3\" data-start=\"6080\" data-end=\"6144\">Les solutions cloud ArDB pour la gestion des donn\u00e9es et le contr\u00f4le qualit\u00e9<\/li>\n<\/ul>\n<h3 data-start=\"448\" data-end=\"821\"><strong>Pourquoi utiliser la technologie \u00e0 double entr\u00e9e ?\u00a0<\/strong><\/h3>\n<p data-start=\"863\" data-end=\"1057\">Les syst\u00e8mes \u00e0 double entr\u00e9e permettent une comparaison directe entre le gaz de l\u2019\u00e9chantillon et le gaz de r\u00e9f\u00e9rence dans des conditions strictement identiques. Cela r\u00e9duit les biais analytiques et garantit une pr\u00e9cision de mesure maximale.<\/p>\n<p data-start=\"1059\" data-end=\"1366\">Iso DUAL INLET utilise une technologie sous vide pour pr\u00e9parer et \u00e9galiser les gaz de l\u2019\u00e9chantillon et de r\u00e9f\u00e9rence avant leur introduction dans l\u2019IRMS. Les deux gaz suivent des trajets identiques et sont introduits alternativement dans la source d\u2019ions, ce qui permet des mesures r\u00e9p\u00e9t\u00e9es du m\u00eame \u00e9chantillon avec une excellente robustesse statistique.<\/p>\n<h3 data-section-id=\"99wzsm\" data-start=\"1373\" data-end=\"1423\"><strong>Principaux avantages d\u2019Iso DUAL INLET<\/strong><\/h3>\n<p data-start=\"1425\" data-end=\"1510\">Le syst\u00e8me est id\u00e9al pour combiner la performance analytique et l'efficacit\u00e9 op\u00e9rationnelle :<\/p>\n<ul data-start=\"1512\" data-end=\"1836\">\n<li data-section-id=\"1sxuscc\" data-start=\"1512\" data-end=\"1606\">Haute sensibilit\u00e9 pour des volumes d\u2019\u00e9chantillons tr\u00e8s petits comme tr\u00e8s grands, y compris les faibles quantit\u00e9s de CO\u2082<\/li>\n<li data-section-id=\"t944n2\" data-start=\"1607\" data-end=\"1697\">Mesures de haute pr\u00e9cision, notamment pour l\u2019analyse \u03b4\u00b9\u2078O de l\u2019eau avec des performances de premier plan<\/li>\n<li data-section-id=\"16r5es6\" data-start=\"1698\" data-end=\"1774\">Format compact de paillasse avec \u00e9lectronique et syst\u00e8me de vide int\u00e9gr\u00e9s<\/li>\n<li data-section-id=\"lv3q14\" data-start=\"1775\" data-end=\"1836\">Haut niveau d\u2019automatisation et besoins de maintenance r\u00e9duits<\/li>\n<\/ul>\n<h3 data-section-id=\"y2lmj\" data-start=\"1843\" data-end=\"1900\"><strong>Gestion des diff\u00e9rentes tailles d\u2019\u00e9chantillons<\/strong><\/h3>\n<p data-start=\"1902\" data-end=\"2016\">Le syst\u00e8me offre une large plage dynamique, permettant l\u2019analyse d\u2019\u00e9chantillons tr\u00e8s petits ou de grande taille sans ajustement manuel.<\/p>\n<p data-start=\"2018\" data-end=\"2043\"><strong>Cela est rendu possible gr\u00e2ce \u00e0 :<\/strong><\/p>\n<ul data-start=\"2044\" data-end=\"2211\">\n<li data-section-id=\"1hvms83\" data-start=\"2044\" data-end=\"2135\">Deux soufflets \u00e0 haute compression entra\u00een\u00e9s par moteurs pas \u00e0 pas, pilot\u00e9s automatiquement par logiciel<\/li>\n<li data-section-id=\"18d6wa0\" data-start=\"2136\" data-end=\"2211\">Un pi\u00e8ge froid automatique brevet\u00e9 \u00e0 micro\u2011volume pour la manipulation des tr\u00e8s faibles quantit\u00e9s d\u2019\u00e9chantillons<\/li>\n<\/ul>\n<p data-start=\"2213\" data-end=\"2317\">Ces caract\u00e9ristiques permettent l\u2019analyse fiable de volumes d\u2019\u00e9chantillons minimaux avec une pr\u00e9cision et une exactitude \u00e9lev\u00e9es.<\/p>\n<h3 data-section-id=\"nzjbt\" data-start=\"2324\" data-end=\"2358\"><strong>Comment une haute pr\u00e9cision est\u2011elle obtenue\u202f?<\/strong><\/h3>\n<p data-start=\"2360\" data-end=\"2459\">La pr\u00e9cision analytique \u00e9lev\u00e9e repose sur un contr\u00f4le rigoureux de la manipulation des gaz et sur une conception instrumentale avanc\u00e9e.<\/p>\n<p data-start=\"2461\" data-end=\"2482\"><strong>\u00c9l\u00e9ments cl\u00e9s\u202f:<\/strong><\/p>\n<ul data-start=\"2483\" data-end=\"2731\">\n<li data-section-id=\"phfje1\" data-start=\"2483\" data-end=\"2564\">Traitement strictement identique des gaz d\u2019\u00e9chantillon et de r\u00e9f\u00e9rence via des chemins de flux parall\u00e8les<\/li>\n<li data-section-id=\"r3v2zd\" data-start=\"2565\" data-end=\"2642\">14 vannes \u00e0 tr\u00e8s faible volume mort, usin\u00e9es en acier inoxydable de haute puret\u00e9<\/li>\n<li data-section-id=\"1ekxx5c\" data-start=\"2643\" data-end=\"2731\">Pompe turbomol\u00e9culaire d\u00e9di\u00e9e \u00e0 la vanne de commutation pour \u00e9liminer les effets de m\u00e9moire<\/li>\n<\/ul>\n<p data-start=\"2733\" data-end=\"2862\">Cette configuration permet des mesures extr\u00eamement pr\u00e9cises des rapports isotopiques, y compris une analyse \u03b4\u00b9\u2078O de l\u2019eau \u00e0 tr\u00e8s haute pr\u00e9cision.<\/p>\n<h3 data-section-id=\"hu6tna\" data-start=\"2869\" data-end=\"2910\"><strong>Automatisation et facilit\u00e9 d\u2019utilisation<\/strong><\/h3>\n<p data-start=\"2912\" data-end=\"3037\">Le syst\u00e8me est enti\u00e8rement contr\u00f4l\u00e9 par la suite logicielle lyticOS\u00ae, ce qui r\u00e9duit fortement l\u2019intervention manuelle.<\/p>\n<p data-start=\"3039\" data-end=\"3059\"><strong>L'automatisation comprend<\/strong><\/p>\n<ul data-start=\"3060\" data-end=\"3339\">\n<li data-section-id=\"eoodhq\" data-start=\"3060\" data-end=\"3110\">L\u2019expansion automatique des gaz et l\u2019\u00e9galisation des intensit\u00e9s<\/li>\n<li data-section-id=\"2ic8hc\" data-start=\"3111\" data-end=\"3167\">Le contr\u00f4le des cycles de commutation sans programmation pr\u00e9alable<\/li>\n<li data-section-id=\"1sqh87y\" data-start=\"3168\" data-end=\"3251\">De longues s\u00e9quences de fonctionnement sans surveillance gr\u00e2ce \u00e0 des soufflets de gaz de r\u00e9f\u00e9rence de grande capacit\u00e9 (100\u202fml)<\/li>\n<li data-section-id=\"1lbmgxl\" data-start=\"3252\" data-end=\"3339\">Une maintenance minimale gr\u00e2ce \u00e0 des composants de vannes con\u00e7us pour des millions de cycles<\/li>\n<\/ul>\n<p data-start=\"3341\" data-end=\"3411\">Cela garantit une disponibilit\u00e9 \u00e9lev\u00e9e du syst\u00e8me et des workflows de laboratoire efficaces.<\/p>\n<h3 data-section-id=\"1g87iek\" data-start=\"3418\" data-end=\"3461\"><strong>Configuration technique<\/strong><\/h3>\n<p data-start=\"3463\" data-end=\"3559\">Iso DUAL INLET utilise un syst\u00e8me de manipulation des gaz sous vide pour pr\u00e9parer les \u00e9chantillons avant l\u2019analyse isotopique.<\/p>\n<p data-start=\"3561\" data-end=\"3578\"><strong>Aper\u00e7u du processus\u202f:<\/strong><\/p>\n<ul data-start=\"3579\" data-end=\"3880\">\n<li data-section-id=\"9j622z\" data-start=\"3579\" data-end=\"3662\">Des pompes turbomol\u00e9culaires isolent et expansent les gaz d\u2019\u00e9chantillon et de r\u00e9f\u00e9rence<\/li>\n<li data-section-id=\"1u6j141\" data-start=\"3663\" data-end=\"3717\">Les gaz sont \u00e9galis\u00e9s en intensit\u00e9 \u00e0 l\u2019aide de soufflets variables<\/li>\n<li data-section-id=\"323f56\" data-start=\"3718\" data-end=\"3793\">Une vanne de commutation introduit alternativement les gaz dans la source d\u2019ions de l\u2019IRMS<\/li>\n<li data-section-id=\"1mpqco\" data-start=\"3794\" data-end=\"3880\">Le syst\u00e8me effectue plusieurs mesures par \u00e9chantillon afin d\u2019am\u00e9liorer la pr\u00e9cision statistique<\/li>\n<\/ul>\n<p data-start=\"3882\" data-end=\"3957\">La manipulation des gaz se fait sans fractionnement isotopique.<\/p>\n<h3 data-section-id=\"exltym\" data-start=\"3964\" data-end=\"4017\"><strong>Syst\u00e8mes compatibles avec Iso DUAL INLET<\/strong><\/h3>\n<div>\n<table>\n<tbody>\n<tr>\n<th scope=\"row\"><strong>Analyse combin\u00e9e des carbonates et de l'eau<\/strong><\/th>\n<td><strong>iso MULTI PREP<\/strong><\/td>\n<td>Syst\u00e8me unique pour les \u00e9chantillons de carbonate et d'eau<br \/>\nChangement de mode rapide par simple modification de la configuration de l\u2019aiguille<\/td>\n<td>Changement de mode en quelques minutes<\/td>\n<\/tr>\n<tr>\n<th scope=\"row\"><strong>Analyse de l'eau de haute pr\u00e9cision<\/strong><\/th>\n<td><strong>iso AQUA PREP<\/strong><\/td>\n<td>Analyse \u03b4\u00b9\u2078O de l\u2019eau par technique d\u2019\u00e9quilibration<br \/>\nTr\u00e8s grande stabilit\u00e9 sans d\u00e9rive mesurable<\/td>\n<td>Pr\u00e9cision &lt; 0,05 \u2030 (1\u03c3, n = 10)<br \/>\nJusqu'\u00e0 180 \u00e9chantillons par s\u00e9quence<\/td>\n<\/tr>\n<tr>\n<th scope=\"row\"><strong>Analyse des carbonates \u00e0 haute sensibilit\u00e9<\/strong><\/th>\n<td><strong>iso CARB PREP<\/strong><\/td>\n<td>Analyse automatis\u00e9e des carbonates jusqu'\u00e0 20 \u00b5g<br \/>\nAiguille \u00e0 double canal, pompe d\u2019injection acide \u00e0 entra\u00eenement direct, pi\u00e8ge froid LN\u2082 pour le pi\u00e9geage du CO\u2082<\/td>\n<td>Jusqu'\u00e0 180 \u00e9chantillons dans un plateau chauff\u00e9<\/td>\n<\/tr>\n<tr>\n<th scope=\"row\"><strong>Analyse automatis\u00e9e des gaz purs<\/strong><\/th>\n<td><strong>iso MANIFOLD<\/strong><\/td>\n<td>Analyse automatis\u00e9e d'\u00e9chantillons de gaz scell\u00e9s<br \/>\nCompatible avec tubes \u00e0 vanne et ampoules \u00e0 bris de verre<\/td>\n<td>Jusqu\u2019\u00e0 50 tubes \u00e0 vanne<br \/>\nJusqu'\u00e0 20 ampoules \u00e0 bris de verre<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<h3 data-section-id=\"rnexpj\" data-start=\"5207\" data-end=\"5248\"><strong>Options analytiques\u00a0<\/strong><\/h3>\n<p data-start=\"5250\" data-end=\"5274\">Iso DUAL INLET prend en charge\u202f:<\/p>\n<ul data-start=\"5275\" data-end=\"5520\">\n<li data-section-id=\"1btu7bh\" data-start=\"5275\" data-end=\"5330\">Analyse de gaz purs tels que CO\u2082, H\u2082, SO\u2082 et O\u2082<\/li>\n<li data-section-id=\"1s8fngs\" data-start=\"5331\" data-end=\"5391\">Utilisation comme syst\u00e8me d\u2019injection de gaz de surveillance en flux continu<\/li>\n<li data-section-id=\"13mu4gz\" data-start=\"5392\" data-end=\"5458\">Manipulation s\u00e9curis\u00e9e de gaz toxiques gr\u00e2ce \u00e0 une exposition minimale du laboratoire<\/li>\n<li data-section-id=\"14ts4iq\" data-start=\"5459\" data-end=\"5520\">Mises \u00e0 niveau IRMS optionnelles pour l\u2019analyse des isotopes group\u00e9s (\u039447)<\/li>\n<\/ul>\n<h3 data-section-id=\"1swmedy\" data-start=\"5527\" data-end=\"5564\"><strong>Types d'\u00e9chantillons\u00a0<\/strong><\/h3>\n<p data-start=\"5566\" data-end=\"5643\">Le syst\u00e8me prend en charge une large gamme de types d\u2019\u00e9chantillons, selon la configuration\u202f:<\/p>\n<ul data-start=\"5645\" data-end=\"5858\">\n<li data-section-id=\"1ktl8f7\" data-start=\"5645\" data-end=\"5678\">Gaz purs (CO\u2082, O\u2082, H\u2082, SO\u2082)<\/li>\n<li data-section-id=\"19rl1v7\" data-start=\"5679\" data-end=\"5735\">Eaux souterraines, \u00e9chantillons de carottes de glace et eaux biologiques<\/li>\n<li data-section-id=\"1e2zm5p\" data-start=\"5736\" data-end=\"5784\">Min\u00e9raux carbonat\u00e9s et carbonates fossilis\u00e9s<\/li>\n<li data-section-id=\"1qsypjs\" data-start=\"5785\" data-end=\"5858\">Analyse combin\u00e9e des carbonates et de l\u2019eau via des configurations multi\u2011prep<\/li>\n<\/ul>\n<\/div>\n<p><script type=\"application\/ld+json\">{\n    \"@context\": \"https:\\\/\\\/schema.org\",\n    \"@type\": \"FAQPage\",\n    \"mainEntity\": [\n        {\n            \"@type\": \"Question\",\n            \"name\": \"Why is dual inlet technology considered the gold standard for IRMS?\",\n            \"acceptedAnswer\": {\n                \"@type\": \"Answer\",\n                \"text\": \"Dual inlet technology allows direct comparison between sample gas and reference gas under identical instrumental conditions. 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