{"id":5199,"date":"2026-09-10T16:17:42","date_gmt":"2026-09-10T08:17:42","guid":{"rendered":"https:\/\/www.pgeneral.com\/?p=5199"},"modified":"2026-09-10T16:17:42","modified_gmt":"2026-09-10T08:17:42","slug":"determination-of-sodium-oxide-in-alumina-powder-flame-atomic-absorption-spectrometry","status":"publish","type":"post","link":"https:\/\/www.pgeneral.com\/pt\/applications\/determination-of-sodium-oxide-in-alumina-powder-flame-atomic-absorption-spectrometry","title":{"rendered":"Determina\u00e7\u00e3o de \u00f3xido de s\u00f3dio em p\u00f3 de alumina (espectrometria de absor\u00e7\u00e3o at\u00f4mica com chama)"},"content":{"rendered":"<h2>1 Resumo do M\u00e9todo<\/h2>\n<p>A amostra \u00e9 aquecida e dissolvida em um b\u00e9quer de quartzo com uma mistura de \u00e1cido sulf\u00farico e fosf\u00f3rico. Utilizando uma chama de acetileno, a absorb\u00e2ncia do \u00f3xido de s\u00f3dio \u00e9 medida a 589,0 nm em um espectrofot\u00f4metro de absor\u00e7\u00e3o at\u00f4mica. Dentro de uma determinada faixa de concentra\u00e7\u00e3o, a absorb\u00e2ncia do s\u00f3dio \u00e9 proporcional ao seu teor, e a quantifica\u00e7\u00e3o \u00e9 realizada por compara\u00e7\u00e3o com uma s\u00e9rie de padr\u00f5es.<\/p>\n<h2>2. \u00c2mbito de aplica\u00e7\u00e3o<\/h2>\n<p>Este m\u00e9todo \u00e9 aplic\u00e1vel \u00e0 determina\u00e7\u00e3o do teor de \u00f3xido de s\u00f3dio em p\u00f3 de alumina.<\/p>\n<h2>3 Base de Refer\u00eancia<\/h2>\n<p>GB\/T 6609.5-2004, M\u00e9todos para an\u00e1lise qu\u00edmica e ensaio de propriedades f\u00edsicas da alumina \u2014 Determina\u00e7\u00e3o do teor de \u00f3xido de s\u00f3dio, M\u00e9todo 2<\/p>\n<h2>4 Instrumentos e Reagentes<\/h2>\n<h3><strong><b>4.1 Instrumentos e equipamento<\/b><\/strong><\/h3>\n<h4><strong><b>4.1.1 Instrumentos de teste<\/b><\/strong><\/h4>\n<table>\n<tbody>\n<tr>\n<td><strong><b>N\u00e3o.<\/b><\/strong><\/td>\n<td><strong><b>Nome<\/b><\/strong><\/td>\n<td><strong><b>Quantidade<\/b><\/strong><\/td>\n<td><strong><b>Requisitos t\u00e9cnicos<\/b><\/strong><\/td>\n<td><strong><b>Acess\u00f3rios<\/b><\/strong><\/td>\n<\/tr>\n<tr>\n<td>1<\/td>\n<td>Espectrofot\u00f4metro de Absor\u00e7\u00e3o At\u00f4mica (TAS 990)<\/td>\n<td>1 conjunto<\/td>\n<td>\u2014<\/td>\n<td>L\u00e2mpada de s\u00f3dio com c\u00e1todo oco<\/td>\n<\/tr>\n<tr>\n<td>2<\/td>\n<td>Compressor de ar<\/td>\n<td>1 conjunto<\/td>\n<td>Press\u00e3o de escape estimada: 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 The sample is heated and dissolved in a quartz beaker with mixed sulfuric\u001ephosphoric acid. Using an air\u001eacetylene flame, the absorbance of sodium oxide is measured at 589.0 nm on an atomic absorption spectrophotometer. Within a certain concentration range, the absorbance of sodium is proportional to its content, and quantification is carried out [&hellip;]<\/p>\n","protected":false},"author":2,"featured_media":4824,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[81,36],"tags":[],"class_list":["post-5199","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\/pt\/wp-json\/wp\/v2\/posts\/5199","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=5199"}],"version-history":[{"count":1,"href":"https:\/\/www.pgeneral.com\/pt\/wp-json\/wp\/v2\/posts\/5199\/revisions"}],"predecessor-version":[{"id":5200,"href":"https:\/\/www.pgeneral.com\/pt\/wp-json\/wp\/v2\/posts\/5199\/revisions\/5200"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.pgeneral.com\/pt\/wp-json\/wp\/v2\/media\/4824"}],"wp:attachment":[{"href":"https:\/\/www.pgeneral.com\/pt\/wp-json\/wp\/v2\/media?parent=5199"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.pgeneral.com\/pt\/wp-json\/wp\/v2\/categories?post=5199"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.pgeneral.com\/pt\/wp-json\/wp\/v2\/tags?post=5199"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}