{"id":5214,"date":"2026-09-10T16:44:35","date_gmt":"2026-09-10T08:44:35","guid":{"rendered":"https:\/\/www.pgeneral.com\/?p=5214"},"modified":"2026-09-10T16:44:35","modified_gmt":"2026-09-10T08:44:35","slug":"determination-of-potassium-oxide-in-alumina-powder-flame-atomic-absorption-spectrometry-2","status":"publish","type":"post","link":"https:\/\/www.pgeneral.com\/fr\/applications\/determination-of-potassium-oxide-in-alumina-powder-flame-atomic-absorption-spectrometry-2","title":{"rendered":"D\u00e9termination de l'oxyde de potassium dans la poudre d'alumine (spectrom\u00e9trie d'absorption atomique de flamme)"},"content":{"rendered":"<p>1 Aper\u00e7u de la m\u00e9thode<br \/>\nL'\u00e9chantillon \u00e0 tester est chauff\u00e9 et dissous dans un b\u00e9cher en quartz contenant un m\u00e9lange d'acide sulfurique et phosphorique. Apr\u00e8s dilution avec de l'eau, l'absorbance du potassium est mesur\u00e9e \u00e0 une longueur d'onde de 766,5 nm sur un spectrophotom\u00e8tre d'absorption atomique \u00e0 flamme air-ac\u00e9tyl\u00e8ne. Dans une certaine gamme de concentrations, l'absorbance du potassium est proportionnelle \u00e0 sa concentration, et la quantification est r\u00e9alis\u00e9e par comparaison avec une gamme \u00e9talon.<\/p>\n<p>2. Champ d'application<br \/>\nCette m\u00e9thode est applicable \u00e0 la d\u00e9termination de la teneur en oxyde de potassium dans la poudre d'alumine.<\/p>\n<p>3 Base de r\u00e9f\u00e9rence<br \/>\nGB\/T 6609.6\u20112018, M\u00e9thodes d'analyse chimique et d'essai des propri\u00e9t\u00e9s physiques de l'alumine \u2014 Partie 6\u00a0: D\u00e9termination de la teneur en oxyde de potassium<\/p>\n<p>4 Instruments et r\u00e9actifs<\/p>\n<p>4.1 Instruments et \u00e9quipements<\/p>\n<p>4.1.1 Instruments de test<\/p>\n<table>\n<thead>\n<tr>\n<th>- Non, non.<\/th>\n<th>Nom<\/th>\n<th>Quantit\u00e9<\/th>\n<th>Exigences techniques<\/th>\n<th>Accessoires<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td>1<\/td>\n<td>Spectrophotom\u00e8tre d'absorption atomique (TAS\u2011990)<\/td>\n<td>1 ensemble<\/td>\n<td>\u2014<\/td>\n<td>Lampe \u00e0 cathode creuse au potassium<\/td>\n<\/tr>\n<tr>\n<td>2<\/td>\n<td>Compresseur d'air<\/td>\n<td>1 ensemble<\/td>\n<td>Pression d'\u00e9chappement nominale : 0,3 MPa<\/td>\n<td>\u2014<\/td>\n<\/tr>\n<tr>\n<td>3<\/td>\n<td>Acetyl\u00e8ne<\/td>\n<td>1 cylindre<\/td>\n<td>Puret\u00e9 \u226599,99%<\/td>\n<td>\u2014<\/td>\n<\/tr>\n<\/tbody>\n<\/table>","protected":false},"excerpt":{"rendered":"<p>1 Method Overview The test portion is heated and dissolved in a quartz beaker with mixed sulfuric\u2011phosphoric acid. After dilution with water, the absorbance of potassium is measured at a wavelength of 766.5\u202fnm on an atomic absorption spectrophotometer using an air\u2011acetylene flame. Within a certain concentration range, the absorbance of potassium is proportional to its [&hellip;]<\/p>\n","protected":false},"author":2,"featured_media":4907,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[81,36],"tags":[],"class_list":["post-5214","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-petrochemical-and-chemical","category-applications"],"acf":[],"_links":{"self":[{"href":"https:\/\/www.pgeneral.com\/fr\/wp-json\/wp\/v2\/posts\/5214","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=5214"}],"version-history":[{"count":1,"href":"https:\/\/www.pgeneral.com\/fr\/wp-json\/wp\/v2\/posts\/5214\/revisions"}],"predecessor-version":[{"id":5215,"href":"https:\/\/www.pgeneral.com\/fr\/wp-json\/wp\/v2\/posts\/5214\/revisions\/5215"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.pgeneral.com\/fr\/wp-json\/wp\/v2\/media\/4907"}],"wp:attachment":[{"href":"https:\/\/www.pgeneral.com\/fr\/wp-json\/wp\/v2\/media?parent=5214"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.pgeneral.com\/fr\/wp-json\/wp\/v2\/categories?post=5214"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.pgeneral.com\/fr\/wp-json\/wp\/v2\/tags?post=5214"}],"curies":[{"name":"WP","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}