{"id":5211,"date":"2026-09-10T16:40:05","date_gmt":"2026-09-10T08:40:05","guid":{"rendered":"https:\/\/www.pgeneral.com\/?p=5211"},"modified":"2026-09-10T16:40:05","modified_gmt":"2026-09-10T08:40:05","slug":"determination-of-calcium-in-milk-powder-flame-atomic-absorption-spectrometry-3","status":"publish","type":"post","link":"https:\/\/www.pgeneral.com\/pt\/applications\/determination-of-calcium-in-milk-powder-flame-atomic-absorption-spectrometry-3","title":{"rendered":"Determina\u00e7\u00e3o de c\u00e1lcio em p\u00f3-leite (espectrometria de absor\u00e7\u00e3o at\u00f4mica de chama)"},"content":{"rendered":"<p>1 Resumo do M\u00e9todo<br \/>\nAp\u00f3s a digest\u00e3o da amostra, adiciona-se solu\u00e7\u00e3o de lant\u00e2nio como agente liberador. A amostra \u00e9 atomizada em uma chama de absor\u00e7\u00e3o at\u00f4mica e a absorb\u00e2ncia \u00e9 medida em 422,7 nm. Dentro de uma determinada faixa de concentra\u00e7\u00e3o, a absorb\u00e2ncia \u00e9 proporcional ao teor de c\u00e1lcio, e a quantifica\u00e7\u00e3o \u00e9 realizada por compara\u00e7\u00e3o com uma s\u00e9rie padr\u00e3o.<\/p>\n<p>2. \u00c2mbito de aplica\u00e7\u00e3o<br \/>\nEste m\u00e9todo \u00e9 aplic\u00e1vel \u00e0 determina\u00e7\u00e3o de c\u00e1lcio no leite em p\u00f3.<\/p>\n<p>3 Base de Refer\u00eancia<br \/>\nGB 5009.92\u20112016, Norma Nacional de Seguran\u00e7a Alimentar \u2014 Determina\u00e7\u00e3o de C\u00e1lcio em Alimentos<\/p>\n<p>4 Instrumentos e Reagentes<\/p>\n<p>4.1 Instrumentos e equipamento<\/p>\n<p>4.1.1 Instrumentos de teste<\/p>\n<table>\n<thead>\n<tr>\n<th>N\u00e3o.<\/th>\n<th>Nome<\/th>\n<th>Quantidade<\/th>\n<th>Requisitos t\u00e9cnicos<\/th>\n<th>Acess\u00f3rios<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td>1<\/td>\n<td>Espetrofotometro de Absor\u00e7\u00e3o At\u00f4mica de Flame<\/td>\n<td>1 conjunto<\/td>\n<td>\u2014<\/td>\n<td>L\u00e2mpada de c\u00e1todo oco de c\u00e1lcio<\/td>\n<\/tr>\n<tr>\n<td>2<\/td>\n<td>Compressor de ar<\/td>\n<td>1 conjunto<\/td>\n<td>Press\u00e3o nominal de exaust\u00e3o: 0,3 MPa<\/td>\n<td>\u2014<\/td>\n<\/tr>\n<tr>\n<td>3<\/td>\n<td>Acetileno<\/td>\n<td>1 cilindro<\/td>\n<td>Pureza \u226599,99%<\/td>\n<td>\u2014<\/td>\n<\/tr>\n<\/tbody>\n<\/table>","protected":false},"excerpt":{"rendered":"<p>1 Method Overview After the sample is digested, lanthanum solution is added as a releasing agent. The sample is atomized in an atomic\u2011absorption flame, and the absorbance is measured at 422.7\u202fnm. Within a certain concentration range, the absorbance is proportional to the calcium content, and quantification is performed by comparison with the standard series. 2 [&hellip;]<\/p>\n","protected":false},"author":2,"featured_media":5212,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[36,73],"tags":[],"class_list":["post-5211","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-applications","category-food-and-drugs"],"acf":[],"_links":{"self":[{"href":"https:\/\/www.pgeneral.com\/pt\/wp-json\/wp\/v2\/posts\/5211","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.pgeneral.com\/pt\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.pgeneral.com\/pt\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.pgeneral.com\/pt\/wp-json\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"https:\/\/www.pgeneral.com\/pt\/wp-json\/wp\/v2\/comments?post=5211"}],"version-history":[{"count":1,"href":"https:\/\/www.pgeneral.com\/pt\/wp-json\/wp\/v2\/posts\/5211\/revisions"}],"predecessor-version":[{"id":5213,"href":"https:\/\/www.pgeneral.com\/pt\/wp-json\/wp\/v2\/posts\/5211\/revisions\/5213"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.pgeneral.com\/pt\/wp-json\/wp\/v2\/media\/5212"}],"wp:attachment":[{"href":"https:\/\/www.pgeneral.com\/pt\/wp-json\/wp\/v2\/media?parent=5211"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.pgeneral.com\/pt\/wp-json\/wp\/v2\/categories?post=5211"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.pgeneral.com\/pt\/wp-json\/wp\/v2\/tags?post=5211"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}