{"id":3705,"date":"2025-07-10T14:46:48","date_gmt":"2025-07-10T06:46:48","guid":{"rendered":"https:\/\/www.pgeneral.com\/?p=3705"},"modified":"2025-07-10T14:46:48","modified_gmt":"2025-07-10T06:46:48","slug":"determination-of-gold-in-ore-dissolution-solution-flame-atomic-absorption-spectrometry","status":"publish","type":"post","link":"https:\/\/www.pgeneral.com\/pt\/applications\/determination-of-gold-in-ore-dissolution-solution-flame-atomic-absorption-spectrometry","title":{"rendered":"Determina\u00e7\u00e3o de Ouro em Solu\u00e7\u00e3o de Dissolu\u00e7\u00e3o Ore (Espectrometria de Absor\u00e7\u00e3o At\u00f4mica de Flame)"},"content":{"rendered":"
    \n
  1. Vista geral dos m\u00e9todos<\/li>\n<\/ol>\n

    A amostra de mineral dissolvido \u00e9 medida para absor\u00e7\u00e3o a 242,8 nm usando um espectrometro de absor\u00e7\u00e3o at \u00f4mica, e o conte\u00fado de ouro \u00e9 quantificado em compara\u00e7\u00e3o com uma curva padr\u00e3o.<\/p>\n

      \n
    1. 2. Instrumentos e Reagentes<\/li>\n<\/ol>\n

      2.1 Instrumentos e equipamento<\/p>\n

      2.1.1 Instrumentos de Detec\u00e7\u00e3o<\/p>\n

      Espetrofotometro de Absor\u00e7\u00e3o At\u00f4mica de Flame (com l\u00e2mpada de cat\u00f3dio de ouro vazio)<\/p>\n

      Acetileno (1 garrafa,Pureza \u2265 99,99%)<\/p>\n

      Compressor A\u00e9reo (Press\u00e3o de descarga estimada: 0,3 MPa)<\/p>\n

      2.1.2 Equipamento de pr\u00e9-tratamento<\/p>\n

      Sistema de \u00c1gua Ultra Pura<\/p>\n

      Micropipetas<\/p>\n

      Flascos Volum\u00e9tricos<\/p>\n

      2.2 Reagentes<\/p>\n

      2.2.1 Reagentes<\/p>\n

      \u00c1cido hidrocl\u00f3rico<\/p>\n

      2.3 Normas<\/p>\n

      2.3.1 Solu\u00e7\u00e3o de a\u00e7\u00f5es<\/p>\n

      GSB04-1715-2004 Solu\u00e7\u00e3o de a\u00e7\u00f5es de ouro padr\u00e3o<\/p>\n

        \n
      1. Teste de amostra<\/li>\n<\/ol>\n

        3.1 Condi\u00e7\u00f5es de ensaio<\/p>\n

        Condi\u00e7\u00f5es de teste de refer\u00eancia para o espectrofotom\u00e9tro de absor\u00e7\u00e3o at\u00f4mica da chama:<\/p>\n

        Elemento de ouro<\/p>\n

        Longitude de onda (nm) [UNK][UNK]242,8<\/p>\n

        Largura de banda espectral (nm) \uf7690,4<\/p>\n

        Elemento Lampa Corrente (mA) [UNK][UNK]4,0<\/p>\n

        Altura do g\u00e1s (mm) [UNK][UNK]6<\/p>\n

        Taxa de fluxo de g\u00e1s (mL\/min) [UNK][UNK]1300<\/p>\n

        Press\u00e3o do Compressor A\u00e9reo (MPa) \uf0a5 0,22<\/p>\n

        3.2 Passos de teste de amostras<\/p>\n

        Ajusta o instrumento ao seu estado de trabalho \u00f3ptimo, acende a chama e ajuste a taxa de fluxo de g\u00e1s. Testar sequencialmente as solu\u00e7\u00f5es padr\u00e3o e amostral, ler os dados, introduzir o peso da amostra e ver e gravar os resultados.<\/p>\n

        3.3 Calcula\u00e7\u00e3o dos resultados<\/p>\n

        O conte\u00fado de ouro na amostra \u00e9 calculado usando a seguinte f\u00f3rmula:<\/p>\n

        \"\"<\/p>\n

        Onde:<\/p>\n

        \u03c1(Au)[UNK]\u2014 Concentra\u00e7\u00e3o em massa de ouro na solu\u00e7\u00e3o de ensaio, em miligramos por litro (mg\/l);<\/p>\n

        m[UNK]\u2014 massa de ouro na amostra obtida da curva de calibra\u00e7\u00e3o, em microgramas (\u03bcg);<\/p>\n

        O volume da solu\u00e7\u00e3o amostral, em mililitros (ml).<\/p>","protected":false},"excerpt":{"rendered":"

        Method Overview The dissolved ore sample is measured for absorbance at 242.8 nm using an atomic absorption spectrometer, and the gold content is quantified by comparison with a standard curve. 2. Instruments and Reagents 2.1 Instruments and Equipment 2.1.1 Detection Instruments Flame Atomic Absorption Spectrophotometer\u00a0(With Gold Hollow Cathode Lamp) Acetylene\u00a0(1 bottle,Purity\u226599.99%) Air Compressor\u00a0(Rated Discharge Pressure: […]<\/p>\n","protected":false},"author":2,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[36,75],"tags":[],"class_list":["post-3705","post","type-post","status-publish","format-standard","hentry","category-applications","category-environment"],"acf":[],"_links":{"self":[{"href":"https:\/\/www.pgeneral.com\/pt\/wp-json\/wp\/v2\/posts\/3705","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=3705"}],"version-history":[{"count":0,"href":"https:\/\/www.pgeneral.com\/pt\/wp-json\/wp\/v2\/posts\/3705\/revisions"}],"wp:attachment":[{"href":"https:\/\/www.pgeneral.com\/pt\/wp-json\/wp\/v2\/media?parent=3705"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.pgeneral.com\/pt\/wp-json\/wp\/v2\/categories?post=3705"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.pgeneral.com\/pt\/wp-json\/wp\/v2\/tags?post=3705"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}