{"id":5060,"date":"2026-04-16T09:53:40","date_gmt":"2026-04-16T07:53:40","guid":{"rendered":"https:\/\/scispx.com\/?post_type=instruments&#038;p=5060"},"modified":"2026-10-12T09:18:26","modified_gmt":"2026-10-12T07:18:26","slug":"iso-toc-cube-analyseur-elementaire-pour-la-spectrometrie-de-masse","status":"publish","type":"instruments","link":"https:\/\/scispx.com\/fr\/instruments\/iso-toc-cube-analyseur-elementaire-pour-la-spectrometrie-de-masse\/","title":{"rendered":"Iso TOC cube"},"content":{"rendered":"<h2>Entr\u00e9e d\u2019analyseur \u00e9l\u00e9mentaire pour EA\u2011IRMS<\/h2>\n<h3><strong>Qu\u2019est\u2011ce que l\u2019iso TOC cube ?\u00a0<\/strong><\/h3>\n<p data-start=\"192\" data-end=\"428\">L\u2019iso TOC cube est un analyseur \u00e9l\u00e9mentaire con\u00e7u pour la spectrom\u00e9trie de masse des rapports isotopiques (EA\u2011IRMS). Il permet l\u2019analyse quantitative et isotopique du carbone organique total dissous (TOC) et de l\u2019azote total li\u00e9 (TNb) dans les \u00e9chantillons aqueux.<\/p>\n<p data-start=\"400\" data-end=\"663\">L\u2019analyse isotopique du carbone et de l\u2019azote dissous joue un r\u00f4le essentiel dans la compr\u00e9hension des cycles biog\u00e9ochimiques des syst\u00e8mes aquatiques. Les mati\u00e8res dissoutes constituant une voie majeure de ces cycles, une quantification pr\u00e9cise et une analyse fiable des rapports isotopiques sont indispensables.<\/p>\n<p data-start=\"665\" data-end=\"886\">L\u2019iso TOC cube introduit une m\u00e9thode de combustion \u00e0 haute temp\u00e9rature sp\u00e9cialement d\u00e9velopp\u00e9e pour cette application et constitue le seul instrument commercial capable de r\u00e9aliser directement l\u2019analyse isotopique du TOC et du TNb dans des \u00e9chantillons liquides.<\/p>\n<h3 data-section-id=\"1ixkx6y\" data-start=\"1481\" data-end=\"1525\"><strong>Comment l\u2019analyse isotopique du TOC est\u2011elle r\u00e9alis\u00e9e ?<\/strong><\/h3>\n<p data-start=\"1527\" data-end=\"1749\">Le cube iso TOC utilise une <strong>combustion \u00e0 haute temp\u00e9rature<\/strong> plut\u00f4t que des m\u00e9thodes chimiques humides ou d\u2019oxydation UV. Cette approche garantit la conversion compl\u00e8te de tous les compos\u00e9s, y compris les substances r\u00e9fractaires telles que les acides humiques et la lignine.<\/p>\n<p data-start=\"1751\" data-end=\"1784\"><strong>Le syst\u00e8me offre ainsi :<\/strong><\/p>\n<ul data-start=\"1785\" data-end=\"1938\">\n<li data-section-id=\"1ghbrvl\" data-start=\"1785\" data-end=\"1820\">Des mesures ind\u00e9pendantes de la matrice<\/li>\n<li data-section-id=\"13xa0ro\" data-start=\"1821\" data-end=\"1880\">Une haute pr\u00e9cision et une excellente exactitude pour diff\u00e9rents types de liquides<\/li>\n<li data-section-id=\"1jn9osm\" data-start=\"1881\" data-end=\"1938\">Des performances fiables pour les compos\u00e9s difficiles \u00e0 oxyder<\/li>\n<\/ul>\n<p data-start=\"1940\" data-end=\"2079\">Il prend en charge une large gamme de matrices, notamment l\u2019eau potable, les eaux us\u00e9es, les lixiviats de sols, les suspensions, les saumures et les \u00e9chantillons marins.<\/p>\n<h3 data-section-id=\"16vwkvt\" data-start=\"2086\" data-end=\"2133\"><strong>Comment l\u2019analyse directe du \u03b4\u00b9\u2075N du TNb est\u2011elle obtenue ?<\/strong><\/h3>\n<p data-start=\"2135\" data-end=\"2254\">L\u2019iso TOC cube est le seul syst\u00e8me capable d\u2019effectuer l\u2019analyse isotopique directe du \u03b4\u00b9\u2075N de l\u2019azote total li\u00e9 dans des \u00e9chantillons aqueux.<\/p>\n<p data-start=\"2256\" data-end=\"2281\"><strong>Cela est rendu possible gr\u00e2ce \u00e0 :<\/strong><\/p>\n<ul data-start=\"2282\" data-end=\"2482\">\n<li data-section-id=\"bmqapa\" data-start=\"2282\" data-end=\"2328\">Un module d\u00e9di\u00e9 aux faibles concentrations (Low Concentration Module, LCM)<\/li>\n<li data-section-id=\"1ksrs0n\" data-start=\"2329\" data-end=\"2387\">Un d\u00e9gazeur \u00e0 membrane int\u00e9gr\u00e9 pour \u00e9liminer le N\u2082 dissous<\/li>\n<li data-section-id=\"1d9q7cd\" data-start=\"2388\" data-end=\"2482\">Un refroidissement thermo\u00e9lectrique sans cryog\u00e8ne combin\u00e9 \u00e0 la technologie Advanced Purge and Trap (APT)<\/li>\n<\/ul>\n<p data-start=\"2484\" data-end=\"2590\">Ces \u00e9l\u00e9ments permettent des niveaux de d\u00e9tection du TNb jusqu\u2019\u00e0 25\u202fppm et assurent une s\u00e9paration propre des signaux de l\u2019azote.<\/p>\n<h3 data-section-id=\"1ei6qfm\" data-start=\"2393\" data-end=\"2438\"><strong>Haut d\u00e9bit sans pr\u00e9paration des \u00e9chantillons<\/strong><\/h3>\n<p data-start=\"2440\" data-end=\"2583\">L\u2019iso TOC cube analyse directement les \u00e9chantillons liquides, \u00e9liminant les \u00e9tapes longues de pr\u00e9traitement telles que la lyophilisation.<\/p>\n<p data-start=\"2585\" data-end=\"2607\"><strong>Cette approche garantit :<\/strong><\/p>\n<ul data-start=\"2608\" data-end=\"2746\">\n<li data-section-id=\"lqapwa\" data-start=\"2608\" data-end=\"2665\">D\u00e9termination directe du carbone et de l'azote dissous<\/li>\n<li data-section-id=\"12ywnla\" data-start=\"2666\" data-end=\"2719\">Conversion quantitative compl\u00e8te de tous les compos\u00e9s<\/li>\n<li data-section-id=\"117wrzz\" data-start=\"2800\" data-end=\"2820\">Des workflows plus rapides<\/li>\n<li data-section-id=\"1f881sp\" data-start=\"2821\" data-end=\"2848\">R\u00e9duction de la manutention manuelle<\/li>\n<li data-section-id=\"ju1lg7\" data-start=\"2849\" data-end=\"2878\">Un fonctionnement autonome 24\u202fh\/24 et 7\u202fj\/7<\/li>\n<\/ul>\n<h3 data-section-id=\"1ewkm7i\" data-start=\"2983\" data-end=\"3021\"><strong>Con\u00e7u pour une utilisation simple et une disponibilit\u00e9 \u00e9lev\u00e9e<\/strong><\/h3>\n<p data-start=\"2891\" data-end=\"2973\">L\u2019instrument est d\u00e9velopp\u00e9 pour un fonctionnement fiable \u00e0 long terme avec un minimum de maintenance.<\/p>\n<p data-start=\"2975\" data-end=\"2995\"><strong>Principales caract\u00e9ristiques de conception :<\/strong><\/p>\n<ul data-start=\"2996\" data-end=\"3239\">\n<li data-section-id=\"sgfgkt\" data-start=\"2996\" data-end=\"3064\">Autosampler int\u00e9gr\u00e9 avec 32 positions (50 positions en option)<\/li>\n<li data-section-id=\"bo94bp\" data-start=\"3065\" data-end=\"3096\">Recharge possible pendant le fonctionnement<\/li>\n<li data-section-id=\"1bf5ek\" data-start=\"3097\" data-end=\"3144\">Maintenance sans outils gr\u00e2ce aux connexions \u00e0 colliers<\/li>\n<li data-section-id=\"vyasa7\" data-start=\"3145\" data-end=\"3189\">Four extractible pour un acc\u00e8s facile<\/li>\n<li data-section-id=\"160ru0z\" data-start=\"3190\" data-end=\"3239\">Technologie SALTTRAP pour les \u00e9chantillons \u00e0 forte salinit\u00e9<\/li>\n<\/ul>\n<p data-start=\"3241\" data-end=\"3320\">Ces caract\u00e9ristiques contribuent \u00e0 une disponibilit\u00e9 \u00e9lev\u00e9e du syst\u00e8me et \u00e0 une exploitation quotidienne simplifi\u00e9e.<\/p>\n<h3 data-section-id=\"m9dslx\" data-start=\"3327\" data-end=\"3376\"><strong>Quels param\u00e8tres et isotopes peuvent \u00eatre analys\u00e9s ?<\/strong><\/h3>\n<p data-start=\"3378\" data-end=\"3412\">Le cube iso TOC est optimis\u00e9 pour :<\/p>\n<ul data-start=\"3413\" data-end=\"3441\">\n<li data-section-id=\"2gvugl\" data-start=\"3413\" data-end=\"3421\">\u03b4\u00b9\u00b3C<\/li>\n<li data-section-id=\"yk98c1\" data-start=\"3422\" data-end=\"3441\">\u03b4\u00b9\u2075N (en option)<\/li>\n<\/ul>\n<p data-start=\"3443\" data-end=\"3463\">Pour l'analyse de :<\/p>\n<ul data-start=\"3464\" data-end=\"3580\">\n<li data-section-id=\"vakekf\" data-start=\"3464\" data-end=\"3494\">Carbone organique total (COT)<\/li>\n<li data-section-id=\"9zsue6\" data-start=\"3495\" data-end=\"3527\">Carbone inorganique total (TIC)<\/li>\n<li data-section-id=\"qfj7wv\" data-start=\"3528\" data-end=\"3549\">Carbone total (TC)<\/li>\n<li data-section-id=\"u12kwz\" data-start=\"3550\" data-end=\"3580\">Azote total li\u00e9 (TNb)<\/li>\n<\/ul>\n<h3 data-section-id=\"1g79i14\" data-start=\"3727\" data-end=\"3769\"><strong>Capacit\u00e9s analytiques et performances<\/strong><\/h3>\n<p data-start=\"3771\" data-end=\"3933\">L\u2019iso TOC cube couvre une tr\u00e8s large gamme de concentrations et de types d\u2019\u00e9chantillons, des niveaux traces aux concentrations \u00e9lev\u00e9es, et des eaux douces aux matrices hautement salines.<\/p>\n<ul data-start=\"3959\" data-end=\"4175\">\n<li data-section-id=\"1kpfvgx\" data-start=\"3959\" data-end=\"4018\">R\u00e9cup\u00e9ration \u00e0 100\u202f% du carbone et de l\u2019azote, ind\u00e9pendamment de la matrice<\/li>\n<li data-section-id=\"2twkly\" data-start=\"4019\" data-end=\"4086\">Analyse simultan\u00e9e du \u03b4\u00b9\u00b3C et du \u03b4\u00b9\u2075N \u00e0 de faibles concentrations<\/li>\n<li data-section-id=\"1ywwle7\" data-start=\"4087\" data-end=\"4175\">Niveaux de d\u00e9tection typiques :\n<ul data-start=\"4125\" data-end=\"4175\">\n<li data-section-id=\"1y9ef3a\" data-start=\"4125\" data-end=\"4147\">~1 mg\/L pour le carbone<\/li>\n<li data-section-id=\"hkz542\" data-start=\"4150\" data-end=\"4175\">~15 mg\/L pour l'azote<\/li>\n<\/ul>\n<\/li>\n<\/ul>\n<p data-start=\"3928\" data-end=\"3979\">Volumes d\u2019injection liquides jusqu\u2019\u00e0 3\u202fml<\/p>\n<h3 data-section-id=\"xwlo8g\" data-start=\"5081\" data-end=\"5134\"><strong>Applications et types d\u2019\u00e9chantillons pris en charge<\/strong><\/h3>\n<p data-start=\"5136\" data-end=\"5224\">L\u2019iso TOC cube convient \u00e0 un large \u00e9ventail d\u2019environnements analytiques :<\/p>\n<ul data-start=\"5225\" data-end=\"5343\">\n<li data-section-id=\"1gioi45\" data-start=\"5225\" data-end=\"5255\">Laboratoires environnementaux<\/li>\n<li data-section-id=\"1c2lcbc\" data-start=\"5256\" data-end=\"5284\">Groupes de recherche acad\u00e9miques<\/li>\n<li data-section-id=\"13nz5hj\" data-start=\"5285\" data-end=\"5317\">Laboratoires de contr\u00f4le qualit\u00e9<\/li>\n<li data-section-id=\"8uopgf\" data-start=\"5318\" data-end=\"5343\">Laboratoires contractuels<\/li>\n<\/ul>\n<p data-start=\"5345\" data-end=\"5366\"><strong>Types d'\u00e9chantillons typiques :<\/strong><\/p>\n<ul data-start=\"5367\" data-end=\"5467\">\n<li data-section-id=\"1gczjuv\" data-start=\"5367\" data-end=\"5385\">Eau potable<\/li>\n<li data-section-id=\"3ar0ne\" data-start=\"5386\" data-end=\"5398\">Eau de mer<\/li>\n<li data-section-id=\"1hzbwzr\" data-start=\"5399\" data-end=\"5437\">Eaux us\u00e9es (influent et effluent)<\/li>\n<li data-section-id=\"1dd8fyh\" data-start=\"5438\" data-end=\"5448\">Saumures<\/li>\n<li data-section-id=\"1knhf0x\" data-start=\"5449\" data-end=\"5467\">Lixiviats du sol<\/li>\n<\/ul>\n<h3><strong>Sp\u00e9cifications analytiques\u00a0<\/strong><\/h3>\n<div>\n<table>\n<tbody>\n<tr>\n<th scope=\"row\"><strong>Volume maximal de l'\u00e9chantillon<\/strong><\/th>\n<td>Injections jusqu\u2019\u00e0 3\u202fml pour une d\u00e9tection optimale<\/td>\n<\/tr>\n<tr>\n<th scope=\"row\"><strong>Plage de concentration \u00e9l\u00e9mentaire<\/strong><\/th>\n<td>Carbone dissous : 5 ppm \u00e0 60 000 ppm<br \/>\nAzote dissous*<strong>:<\/strong> 25 ppm \u00e0 60 000 ppm<\/td>\n<\/tr>\n<tr>\n<th scope=\"row\"><strong>Pr\u00e9cision - \u00e9l\u00e9mentaire (externe, 1\u03c3)<\/strong><\/th>\n<td>Carbone : &lt; 2 % relatif<br \/>\nAzote* : &lt; 2 % relatif<\/td>\n<\/tr>\n<tr>\n<th scope=\"row\"><strong>Pr\u00e9cision - rapports isotopiques (externes, 1\u03c3<\/strong>)<\/th>\n<td>\u03b4\u00b9\u00b3C : 0,1 \u2030<br \/>\n\u03b4\u00b9\u2075N*<strong>:<\/strong> 0.2 \u2030<\/td>\n<\/tr>\n<tr>\n<th scope=\"row\"><strong>Temps d'analyse<\/strong><\/th>\n<td>~ 5 min en mode C<br \/>\n~ 15-20 min en mode CN*<\/td>\n<\/tr>\n<tr>\n<th scope=\"row\"><strong>Remarque<\/strong><\/th>\n<td>Le temps d\u2019analyse d\u00e9pend du type d\u2019\u00e9chantillon, du mode d\u2019analyse et de la configuration<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<div id=\"ce2747\" class=\"contentelement frame--default margin-bottom--none primary-color--default ce-grid ce-grid--accordion\">\n<div class=\"\">\n<div class=\"contentelement__inner\">\n<div class=\"accordion__wrapper\">\n<div class=\"accordion\">\n<div id=\"collapse-ce2747\" class=\"accordion__content collapse show\">\n<div class=\"content__inner\">\n<div id=\"ce2746\" class=\"contentelement frame--default margin-bottom--medium primary-color--default ce-text\">\n<div class=\"\">\n<div class=\"contentelement__inner\">\n<div class=\"rtecontent\">\n<p class=\"caption\">* disponible en option<\/p>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\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\": \"What is the iso TOC cube?\",\n            \"acceptedAnswer\": {\n                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