{"id":4481,"date":"2026-03-16T10:27:38","date_gmt":"2026-03-16T02:27:38","guid":{"rendered":"https:\/\/www.pgeneral.com\/?p=4481"},"modified":"2026-03-16T10:27:38","modified_gmt":"2026-03-16T02:27:38","slug":"determination-of-calcium-in-milk-powder-flame-atomic-absorption-spectrometry-2","status":"publish","type":"post","link":"https:\/\/www.pgeneral.com\/fr\/applications\/food-and-drugs\/determination-of-calcium-in-milk-powder-flame-atomic-absorption-spectrometry-2","title":{"rendered":"D\u00e9termination du calcium dans le lait en poudre &#8211; Spectrom\u00e9trie d'absorption atomique de la flamme"},"content":{"rendered":"<ol>\n<li>Aper\u00e7u de la m\u00e9thode<\/li>\n<\/ol>\n<p>Apr\u00e8s avoir dig\u00e9r\u00e9 l'\u00e9chantillon, on ajoute une solution de lanthane comme agent de lib\u00e9ration. L'\u00e9chantillon est atomis\u00e9 par flamme dans un spectrom\u00e8tre d'absorption atomique et l'absorbance est mesur\u00e9e \u00e0 422,7 nm. Dans une certaine gamme de concentration, l'absorbance est directement proportionnelle \u00e0 la teneur en calcium, et la quantification est effectu\u00e9e par comparaison avec une s\u00e9rie standard.<\/p>\n<ol start=\"2\">\n<li>Port\u00e9e<\/li>\n<\/ol>\n<p>D\u00e9termination du calcium dans le lait en poudre.<\/p>\n<ol start=\"3\">\n<li>R\u00e9f\u00e9rences<\/li>\n<\/ol>\n<p>Norme nationale de s\u00e9curit\u00e9 alimentaire GB 5009.92-2016 &#8211; D\u00e9termination du calcium dans les aliments.<\/p>\n<ol start=\"4\">\n<li>Instruments d'essai<\/li>\n<\/ol>\n<p>\u00b7 Spectrophotom\u00e8tre d'absorption atomique de flamme (inclure lampe cathodique creuse de calcium)<\/p>\n<p>\u00b7 Compresseur d'air (pression nominale de d\u00e9charge: 0.3MPa)<\/p>\n<p>\u00b7 Gaz d'ac\u00e9tyl\u00e8ne (Puret\u00e9 du cylindre\u2265 99,99%)<\/p>","protected":false},"excerpt":{"rendered":"<p>Method Overview After the sample is digested, lanthanum solution is added as a releasing agent. The sample is atomized by flame in an atomic absorption spectrometer, and the absorbance is measured at 422.7nm. Within a certain concentration range, the absorbance is directly proportional to the calcium content, and quantification is performed by comparison with a [&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":[73],"tags":[],"class_list":["post-4481","post","type-post","status-publish","format-standard","hentry","category-food-and-drugs"],"acf":[],"_links":{"self":[{"href":"https:\/\/www.pgeneral.com\/fr\/wp-json\/wp\/v2\/posts\/4481","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=4481"}],"version-history":[{"count":0,"href":"https:\/\/www.pgeneral.com\/fr\/wp-json\/wp\/v2\/posts\/4481\/revisions"}],"wp:attachment":[{"href":"https:\/\/www.pgeneral.com\/fr\/wp-json\/wp\/v2\/media?parent=4481"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.pgeneral.com\/fr\/wp-json\/wp\/v2\/categories?post=4481"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.pgeneral.com\/fr\/wp-json\/wp\/v2\/tags?post=4481"}],"curies":[{"name":"WP","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}