{"id":3902,"date":"2025-09-04T11:03:47","date_gmt":"2025-09-04T03:03:47","guid":{"rendered":"https:\/\/www.pgeneral.com\/?p=3902"},"modified":"2025-09-04T11:03:47","modified_gmt":"2025-09-04T03:03:47","slug":"determination-of-copper-in-graphite-powder-flame-atomic-absorption-spectrometry-2","status":"publish","type":"post","link":"https:\/\/www.pgeneral.com\/fr\/applications\/determination-of-copper-in-graphite-powder-flame-atomic-absorption-spectrometry-2","title":{"rendered":"D\u00e9termination du cuivre dans la poudre de graphite (spectrom\u00e9trie d'absorption atomique de flamme)"},"content":{"rendered":"

1. Aper\u00e7u de la m\u00e9thode<\/h2>\n
Apr\u00e8s avoir dig\u00e9r\u00e9 l'\u00e9chantillon \u00e0 l'aqua regia, la d\u00e9termination est effectu\u00e9e \u00e0 l'aide d'une flamme air-ac\u00e9tyl\u00e8ne \u00e0 une longueur d'onde d'instrument de 324,7 nm.<\/div>\n
\n

2. Instruments et r\u00e9actifs<\/h2>\n

2.1 Instruments et \u00e9quipements<\/h3>\n

2.1.1 Instruments d'essai<\/h4>\n
\n
\n\n\n\n\n\n\n\n
N\u00b0 de s\u00e9rie.<\/th>\nNom<\/th>\nQuantit\u00e9<\/th>\nExigences techniques<\/th>\nAccessoires<\/th>\n<\/tr>\n<\/thead>\n
1<\/td>\nSpectrophotom\u00e8tre d'absorption atomique de flamme<\/td>\n1 ensemble<\/td>\n& quot; 8211;<\/td>\nLampe \u00e0 cathode creuse en cuivre<\/td>\n<\/tr>\n
2<\/td>\ngaz ac\u00e9tyl\u00e8ne<\/td>\n1 cylindre<\/td>\nPuret\u00e9 \u2265 99,99%<\/td>\n& quot; 8211;<\/td>\n<\/tr>\n
3<\/td>\nCompresseur d'air<\/td>\n1 ensemble<\/td>\nPression nominale de d\u00e9charge: 0,3 MPa<\/td>\n& quot; 8211;<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n<\/div>\n

2.1.2 \u00c9quipement de pr\u00e9traitement des \u00e9chantillons<\/h4>\n
\n
\n\n\n\n\n\n\n\n\n\n\n
N\u00b0 de s\u00e9rie.<\/th>\nNom<\/th>\nQuantit\u00e9<\/th>\nExigences techniques<\/th>\nAccessoires<\/th>\n<\/tr>\n<\/thead>\n
1<\/td>\nPlaque chaude \u00e0 temp\u00e9rature contr\u00f4l\u00e9e<\/td>\n1 ensemble<\/td>\nTemp\u00e9rature nominale: Temp\u00e9rature ambiante ~ 300 \u2103<\/td>\n& quot; 8211;<\/td>\n<\/tr>\n
2<\/td>\n\u00c9quilibre \u00e9lectronique<\/td>\n1 ensemble<\/td>\nSensibilit\u00e9 : 0,1 mg<\/td>\n& quot; 8211;<\/td>\n<\/tr>\n
3<\/td>\nSyst\u00e8me d'eau ultrapure<\/td>\n1 ensemble<\/td>\n& quot; 8211;<\/td>\n& quot; 8211;<\/td>\n<\/tr>\n
4<\/td>\nMicropipette<\/td>\n1 chacun<\/td>\nGammes: 20 \u03bcL ~ 200 \u03bcL, 100 \u03bcL ~ 1000 \u03bcL<\/td>\n& quot; 8211;<\/td>\n<\/tr>\n
5<\/td>\nFlacon volum\u00e9trique<\/td>\nPlusieurs<\/td>\nVolume: 100 mL<\/td>\n& quot; 8211;<\/td>\n<\/tr>\n
6<\/td>\nTube d'essai<\/td>\nPlusieurs<\/td>\nVolume: 25 mL<\/td>\n& quot; 8211;<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n<\/div>\n

2.2 R\u00e9actifs<\/h3>\n

2.2.1 R\u00e9actifs bruts<\/h4>\n
\n
\n\n\n\n\n\n\n
N\u00b0 de s\u00e9rie.<\/th>\nNom<\/th>\nExigences techniques<\/th>\nRemarques<\/th>\n<\/tr>\n<\/thead>\n
1<\/td>\nAcide nitrique<\/td>\nClasse MOS<\/td>\n& quot; 8211;<\/td>\n<\/tr>\n
2<\/td>\nAcide chlorhydrique<\/td>\nR\u00e9actif garanti (GR)<\/td>\n& quot; 8211;<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n<\/div>\n

2.2.2 R\u00e9actifs pr\u00e9par\u00e9s<\/h4>\n
\n
\n\n\n\n\n\n
N\u00b0 de s\u00e9rie.<\/th>\nNom<\/th>\nM\u00e9thode de pr\u00e9paration<\/th>\nRemarques<\/th>\n<\/tr>\n<\/thead>\n
1<\/td>\nSolution d'acide nitrique (1 99)<\/td>\nMesurer 10 mL d'acide nitrique, ajouter lentement \u00e0 990 mL d'eau d\u00e9sionis\u00e9e et bien m\u00e9langer.<\/td>\n& quot; 8211;<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n<\/div>\n

2.3 Normes de r\u00e9f\u00e9rence<\/h3>\n

2.3.1 Solution de stock<\/h4>\n
\n
\n\n\n\n\n\n
N\u00b0 de s\u00e9rie.<\/th>\n- Non, non.<\/th>\nNom<\/th>\nExigences techniques<\/th>\nRemarques<\/th>\n<\/tr>\n<\/thead>\n
1<\/td>\nGBW 08615<\/td>\nSolution standard \u00e0 \u00e9l\u00e9ment unique en cuivre<\/td>\nConcentration: 1000 \u03bcg\/mL<\/td>\nInstitut national de m\u00e9trologie, Chine<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n<\/div>\n

3. Calcul des r\u00e9sultats<\/h2>\n
La teneur en cuivre dans l'\u00e9chantillon est calcul\u00e9e \u00e0 l'aide de la formule suivante:<\/div>\n
\"\"<\/div>\n


<\/p>\n

O\u00f9:<\/div>\n
    \n
  • X<\/span>\u00a0= teneur en cuivre dans l'\u00e9chantillon, unit\u00e9: milligramme par kilogramme (mg\/kg);<\/li>\n
  • \u03c1 = Concentration en masse de cuivre dans la solution d'essai de l'\u00e9chantillon, unit\u00e9: microgramme par millilitre (\u03bcg\/mL);<\/li>\n
  • \u03c10<\/span>= Concentration en masse de cuivre dans la solution blanche, unit\u00e9: microgramme par millilitre (\u03bcg\/mL);<\/li>\n
  • f<\/span>\u00a0= Facteur de dilution de la solution d'\u00e9chantillon dig\u00e9r\u00e9e;<\/li>\n
  • V<\/span>\u00a0= Volume total de la solution d'\u00e9chantillon dig\u00e9r\u00e9e, unit\u00e9: millilitre (mL);<\/li>\n
  • m<\/span>\u00a0= Masse de l'\u00e9chantillon, unit\u00e9: gramme (g).<\/li>\n<\/ul>\n<\/div>","protected":false},"excerpt":{"rendered":"

    1. Method Overview After the sample is digested with aqua regia, the determination is carried out using an air-acetylene flame at an instrument wavelength of 324.7 nm. 2. Instruments and Reagents 2.1 Instruments and Equipment 2.1.1 Testing Instruments Serial No. Name Quantity Technical Requirements Accessories 1 Flame Atomic Absorption Spectrophotometer 1 set – Copper Hollow […]<\/p>\n","protected":false},"author":2,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[81,36],"tags":[],"class_list":["post-3902","post","type-post","status-publish","format-standard","hentry","category-petrochemical-and-chemical","category-applications"],"acf":[],"_links":{"self":[{"href":"https:\/\/www.pgeneral.com\/fr\/wp-json\/wp\/v2\/posts\/3902","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=3902"}],"version-history":[{"count":0,"href":"https:\/\/www.pgeneral.com\/fr\/wp-json\/wp\/v2\/posts\/3902\/revisions"}],"wp:attachment":[{"href":"https:\/\/www.pgeneral.com\/fr\/wp-json\/wp\/v2\/media?parent=3902"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.pgeneral.com\/fr\/wp-json\/wp\/v2\/categories?post=3902"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.pgeneral.com\/fr\/wp-json\/wp\/v2\/tags?post=3902"}],"curies":[{"name":"WP","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}