{"id":3914,"date":"2025-09-09T11:17:07","date_gmt":"2025-09-09T03:17:07","guid":{"rendered":"https:\/\/www.pgeneral.com\/?p=3914"},"modified":"2025-09-09T11:17:07","modified_gmt":"2025-09-09T03:17:07","slug":"determination-of-nickel-in-reflective-coating-of-mirrors-flame-atomic-absorption-spectrometry","status":"publish","type":"post","link":"https:\/\/www.pgeneral.com\/pt\/applications\/determination-of-nickel-in-reflective-coating-of-mirrors-flame-atomic-absorption-spectrometry","title":{"rendered":"Determina\u00e7\u00e3o de nikel em cobertura reflexiva de espelhos (espectrometria de absor\u00e7\u00e3o at\u00f4mica de chamas)"},"content":{"rendered":"

1. Vista geral do m\u00e9todo<\/h2>\n
Ap\u00f3s a amostra ser pr\u00e9-tratada, ela \u00e9 introduzida em um espectrometro de absor\u00e7\u00e3o at\u00f4mica e atomizada pela chama para determinar a absorb\u00e7\u00e3o. Dentro de uma certa gama de concentra\u00e7\u00f5es, o valor de absor\u00e7\u00e3o \u00e9 proporcional ao conte\u00fado, e a quantifica\u00e7\u00e3o \u00e9 realizada em compara\u00e7\u00e3o com a s\u00e9rie padr\u00e3o.<\/div>\n
\n

2. Instrumentos e Reagentes<\/h2>\n

2.1 Instrumentos e equipamento<\/h3>\n

2.1.1 Instrumentos de ensaio<\/h4>\n
\n
\n\n\n\n\n\n\n\n
Serie No.<\/th>\nNome<\/th>\nQuantidade<\/th>\nRequisitos T\u00e9cnicos<\/th>\nAcess\u00f3rios<\/th>\n<\/tr>\n<\/thead>\n
1<\/td>\nEspetrofotometro de Absor\u00e7\u00e3o At\u00f4mica de Flame<\/td>\n1 conjunto<\/td>\n–<\/td>\nNickel Hollow Cathode Lamp<\/td>\n<\/tr>\n
2<\/td>\nCompressor de ar<\/td>\n1 conjunto<\/td>\nPress\u00e3o de descarga estimada: 0,3 MPa<\/td>\n–<\/td>\n<\/tr>\n
3<\/td>\nGas de acetileno<\/td>\n1 cilindro<\/td>\nPureza \u2265 99,99%<\/td>\n–<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n<\/div>\n

2.1.2 Equipamento de pr\u00e9-tratamento de amostras<\/h4>\n
\n
\n\n\n\n\n\n\n\n\n\n\n
Serie No.<\/th>\nNome<\/th>\nQuantidade<\/th>\nRequisitos T\u00e9cnicos<\/th>\nAcess\u00f3rios<\/th>\n<\/tr>\n<\/thead>\n
1<\/td>\nBalan\u00e7o electr\u00f3nico<\/td>\n1 conjunto<\/td>\nSensibilidade: 0,1 mg<\/td>\n–<\/td>\n<\/tr>\n
2<\/td>\nPolytetrafluoroetilene (PTFE) Beakers<\/td>\nV\u00e1rios<\/td>\nVolume: 100 ml<\/td>\nIncluindo cabe\u00e7as de bicos PTFE<\/td>\n<\/tr>\n
3<\/td>\nPlata quente ajustada<\/td>\n1 conjunto<\/td>\nRango de temperatura: temperatura do quarto ~ 300 [UNK]<\/td>\n–<\/td>\n<\/tr>\n
4<\/td>\nMicropipetas<\/td>\n1 cada<\/td>\nVolume ranges: 20 \u03bcL ~ 200 \u03bcL; 1000 \u03bcL ~ 5000 \u03bcL<\/td>\n–<\/td>\n<\/tr>\n
5<\/td>\nFlascos Volum\u00e9tricos<\/td>\nV\u00e1rios<\/td>\nVolumes: 100 ml, 1000 ml<\/td>\n–<\/td>\n<\/tr>\n
6<\/td>\nTubos colorim\u00e9tricos<\/td>\nV\u00e1rios<\/td>\nVolume: 25 ml<\/td>\n–<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n<\/div>\n

2.2 Reagentes<\/h3>\n

2.2.1 Reagentes mentais<\/h4>\n
\n
\n\n\n\n\n\n
Serie No.<\/th>\nNome<\/th>\nRequisitos T\u00e9cnicos<\/th>\nObserva\u00e7\u00f5es<\/th>\n<\/tr>\n<\/thead>\n
1<\/td>\n\u00c1cido n\u00edtrico<\/td>\nMOS Grade<\/td>\n–<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n<\/div>\n

2.2.2 Reagentes preparados<\/h4>\n
\n
\n\n\n\n\n\n
Serie No.<\/th>\nNome<\/th>\nM\u00e9todo de Prepara\u00e7\u00e3o<\/th>\nObserva\u00e7\u00f5es<\/th>\n<\/tr>\n<\/thead>\n
1<\/td>\nSolu\u00e7\u00e3o de \u00e1cido n\u00edtrico (1 99)<\/td>\nMedir 10 ml de \u00e1cido n\u00edtrico, adicion\u00e1-lo a 990 ml de \u00e1gua e mistura bem.<\/td>\n–<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n<\/div>\n

2.3 Normas de refer\u00eancia<\/h3>\n

2.3.1 Solu\u00e7\u00e3o de a\u00e7\u00f5es<\/h4>\n
\n
\n\n\n\n\n\n
Serie No.<\/th>\nN\u00e3o.<\/th>\nNome<\/th>\nRequisitos T\u00e9cnicos<\/th>\nObserva\u00e7\u00f5es<\/th>\n<\/tr>\n<\/thead>\n
1<\/td>\nGBW08618<\/td>\nSolu\u00e7\u00e3o padr\u00e3o de um elemento \u00fanico de nikel<\/td>\nConcentra\u00e7\u00e3o: 1000 \u03bcg\/ml<\/td>\nInstituto Nacional de Metrologia, China<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n<\/div>\n

3. Procedimento de Opera\u00e7\u00e3o<\/h2>\n

3.1 Prepara\u00e7\u00e3o de amostras<\/h3>\n

3.1.1 Prepara\u00e7\u00e3o da Solu\u00e7\u00e3o de Testes<\/h4>\n
Pr\u00e9-tratamento de amostras:
Coloque o espelho inteiro num bico PTFE com o lado refletivo virado para cima. Adicionar 1 ml de \u00e1gua e 5 ml de \u00e1cido n\u00edtrico (o n\u00edvel l\u00edquido deve cobrir completamente a superf\u00edcie refletiva do espelho). cobre o beco, calor para digest\u00e3o por uma hora at\u00e9 o revestimento refletivo do espelho desaparecer completamente. remover o beco, refriger\u00e1-lo, diluir a solu\u00e7\u00e3o para o volume marcado em um tubo colorim\u00e9trico de 25 ml, agit\u00e1-la bem e transferi-la para uma garrafa de pl\u00e1stico para armazenamento. Prepare uma amostra em branco simultaneamente.<\/div>\n

3.1.2 Prepara\u00e7\u00e3o de solu\u00e7\u00f5es padr\u00e3o<\/h4>\n
Prepara\u00e7\u00e3o da s\u00e9rie padr\u00e3o de nikel:
Pipete 0 ml, 25 \u03bcL, 50 \u03bcL, 100 \u03bcL e 150 \u03bcL de solu\u00e7\u00e3o padr\u00e3o de n\u00edquel (1000 \u03bcg\/ml) respectivamente em flasks volum\u00e9tricos de 100 ml. Dilute ao volume marcado com solu\u00e7\u00e3o de \u00e1cido n\u00edtrico (1 99) e misture bem. As concentra\u00e7\u00f5es desta s\u00e9rie padr\u00e3o s\u00e3o: 0 \u03bcg\/mL, 0,25 \u03bcg\/mL, 0,50 \u03bcg\/mL, 1,00 \u03bcg\/mL e 1,50 \u03bcg\/mL.<\/div>\n

3.2 Ensaios de amostras<\/h3>\n
    \n
  1. Condi\u00e7\u00f5es de Teste
    Condi\u00e7\u00f5es de refer\u00eancia para detec\u00e7\u00e3o de espectrofotom\u00e9tro de absor\u00e7\u00e3o at\u00f4mica de chamas<\/li>\n<\/ol>\n


    <\/p>\n

    \n
    \n\n\n\n\n\n\n\n\n\n\n
    Par\u00e2metro<\/th>\nEspecifica\u00e7\u00e3o<\/th>\n<\/tr>\n<\/thead>\n
    Longitude de onda<\/td>\n232,0 nm<\/td>\n<\/tr>\n
    Largura de banda espectral<\/td>\n0,1 nm<\/td>\n<\/tr>\n
    Elemento Lampa Corrente<\/td>\n4,0 mA<\/td>\n<\/tr>\n
    Altura do Burner<\/td>\n6 mm<\/td>\n<\/tr>\n
    Taxa de fluxo de g\u00e1s de combust\u00edvel<\/td>\n1300 ml\/min<\/td>\n<\/tr>\n
    Press\u00e3o do Compressor A\u00e9reo<\/td>\n0,22 MPa<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n<\/div>\n


    <\/p>\n

      \n
    1. Teste de amostra
      Ajusta o instrumento ao estado de trabalho \u00f3ptimo e zero com \u00e1gua. Determinar a absor\u00e7\u00e3o das solu\u00e7\u00f5es padr\u00e3o, solu\u00e7\u00e3o de teste em branco e solu\u00e7\u00e3o de teste em sequ\u00eancia.<\/li>\n<\/ol>\n


      <\/p>\n

      Retrai a absorb\u00e2ncia da solu\u00e7\u00e3o zero-padr\u00e3o da absorb\u00e7\u00e3o de cada solu\u00e7\u00e3o padr\u00e3o. Plote uma curva de trabalho com concentra\u00e7\u00e3o de mass a (\u03bcg\/mL) como abscissa e a absorb\u00eancia correspondente como ordenada. Baseado na absorb\u00eancia medida da solu\u00e7\u00e3o de ensaio, encontrar a concentra\u00e7\u00e3o de massa de n\u00edquel da curva de trabalho.<\/div>\n<\/div>","protected":false},"excerpt":{"rendered":"

      1. Method Overview After the sample is pretreated, it is introduced into an atomic absorption spectrometer and atomized by flame to determine the absorbance. Within a certain concentration range, the absorbance value is proportional to the content, and quantification is performed by comparison with the standard series. 2. Instruments and Reagents 2.1 Instruments and Equipment […]<\/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-3914","post","type-post","status-publish","format-standard","hentry","category-petrochemical-and-chemical","category-applications"],"acf":[],"_links":{"self":[{"href":"https:\/\/www.pgeneral.com\/pt\/wp-json\/wp\/v2\/posts\/3914","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=3914"}],"version-history":[{"count":0,"href":"https:\/\/www.pgeneral.com\/pt\/wp-json\/wp\/v2\/posts\/3914\/revisions"}],"wp:attachment":[{"href":"https:\/\/www.pgeneral.com\/pt\/wp-json\/wp\/v2\/media?parent=3914"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.pgeneral.com\/pt\/wp-json\/wp\/v2\/categories?post=3914"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.pgeneral.com\/pt\/wp-json\/wp\/v2\/tags?post=3914"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}