{"id":4475,"date":"2026-03-16T10:22:51","date_gmt":"2026-03-16T02:22:51","guid":{"rendered":"https:\/\/www.pgeneral.com\/?p=4475"},"modified":"2026-03-16T10:22:51","modified_gmt":"2026-03-16T02:22:51","slug":"application-case-of-a500-zeeman-atomic-absorption-spectrophotometer-determination-of-sodium-content-in-methanol","status":"publish","type":"post","link":"https:\/\/www.pgeneral.com\/fr\/applications\/petrochemical-and-chemical\/application-case-of-a500-zeeman-atomic-absorption-spectrophotometer-determination-of-sodium-content-in-methanol","title":{"rendered":"Cas d'application du spectrophotom\u00e8tre d'absorption atomique A500 Zeeman: D\u00e9termination de la teneur en sodium dans le m\u00e9thanol"},"content":{"rendered":"<p>Lors de la production de m\u00e9thanol, la surveillance et le contr\u00f4le de la teneur en sodium jouent un r\u00f4le cl\u00e9 pour assurer la qualit\u00e9 du produit. En tant qu'\u00e9l\u00e9ment m\u00e9tallique facilement ionis\u00e9, le sodium, m\u00eame pr\u00e9sent en traces dans le m\u00e9thanol, peut exercer des effets n\u00e9gatifs importants sur son stockage, son transport, son traitement ult\u00e9rieur et les performances du produit final.<\/p>\n<p>\u00c0 cet effet, une m\u00e9thode de dilution directe \u00e0 l'eau est adopt\u00e9e pour le pr\u00e9traitement d'\u00e9chantillons de m\u00e9thanol dans cette \u00e9tude. La teneur en sodium est d\u00e9termin\u00e9e \u00e0 l'aide d'un spectrophotom\u00e8tre d'absorption atomique \u00e9quip\u00e9 de correction de fond Zeeman \u00e0 la ligne sensible secondaire de 330,2 nm, afin d'assurer la pr\u00e9cision des r\u00e9sultats des essais et de r\u00e9pondre aux exigences du contr\u00f4le de qualit\u00e9.<\/p>\n<ol>\n<li>Instruments et r\u00e9actifs<\/li>\n<\/ol>\n<p>Instruments: A500G Zeeman Four Graphite Spectrophotom\u00e8tre d'absorption atomique<\/p>\n<p>R\u00e9actifs : eau<\/p>\n<p>Mat\u00e9riaux de r\u00e9f\u00e9rence: GSB 04-1738-2004 Solution standard \u00e0 \u00e9l\u00e9ment unique de sodium<\/p>","protected":false},"excerpt":{"rendered":"<p>During the production of methanol, the monitoring and control of sodium content play a key role in ensuring product quality. As an easily ionized metal element, sodium, even present at trace levels in methanol, may exert significant adverse effects on its storage, transportation, subsequent processing, and final product performance. For this purpose, a direct water [&hellip;]<\/p>\n","protected":false},"author":2,"featured_media":0,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[81],"tags":[],"class_list":["post-4475","post","type-post","status-publish","format-standard","hentry","category-petrochemical-and-chemical"],"acf":[],"_links":{"self":[{"href":"https:\/\/www.pgeneral.com\/fr\/wp-json\/wp\/v2\/posts\/4475","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.pgeneral.com\/fr\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.pgeneral.com\/fr\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.pgeneral.com\/fr\/wp-json\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"https:\/\/www.pgeneral.com\/fr\/wp-json\/wp\/v2\/comments?post=4475"}],"version-history":[{"count":0,"href":"https:\/\/www.pgeneral.com\/fr\/wp-json\/wp\/v2\/posts\/4475\/revisions"}],"wp:attachment":[{"href":"https:\/\/www.pgeneral.com\/fr\/wp-json\/wp\/v2\/media?parent=4475"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.pgeneral.com\/fr\/wp-json\/wp\/v2\/categories?post=4475"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.pgeneral.com\/fr\/wp-json\/wp\/v2\/tags?post=4475"}],"curies":[{"name":"WP","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}