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| Registros recuperados : 615 | |
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 | Acesso ao texto completo restrito à biblioteca da Embrapa Pecuária Sudeste. Para informações adicionais entre em contato com cppse.biblioteca@embrapa.br. |
Registro Completo
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Biblioteca(s): |
Embrapa Pecuária Sudeste. |
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Data corrente: |
03/12/2020 |
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Data da última atualização: |
03/12/2020 |
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Tipo da produção científica: |
Artigo em Periódico Indexado |
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Circulação/Nível: |
A - 1 |
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Autoria: |
MOREIRA, L. S.; SÁ, I. P.; MACHADO, R. C.; NOGUEIRA, A. R. de A.; SILVA, E. G. P. da; AMARAL, C. D. B. |
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Afiliação: |
Luana S. Moreira, UFPR; Ívero P. Sá, UFSCAR; Raquel Cardoso Machado, UFSCAR; ANA RITA DE ARAUJO NOGUEIRA, CPPSE; Erik G. P. da Silva, UNIVERSIDADE DO ESTADO SANTA CRUZ; Clarice D. B. Amaral, UFPR. |
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Título: |
Coprecipitation magnesium(II) hydroxide as a strategy of pre-concentration for trace elemental determination by microwave-induced plasma optical emission spectrometry. |
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Ano de publicação: |
2020 |
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Fonte/Imprenta: |
Spectrochimica Acta Part B, v. 169, 105899, jul. 2020. |
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DOI: |
https://doi.org/10.1016/j.sab.2020.105899 |
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Idioma: |
Inglês |
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Conteúdo: |
In this work, a method employing coprecipitation procedure with magnesium hydroxide as a carrier for separation/preconcentration of arsenic(V), cadmium(II), chromium(III), cobalt(II), copper(II), manganese(VII), mercury(II), nickel(II), and vanadium(V) was developed. The method was applied in fish and shellfish samples, and the elements were determined by microwave-induced plasma optical emission spectrometry (MIP OES). Complete two-level factorial design for four variables and a mixture design were employed to evaluate and optimize the factors involved in this system. Under optimized conditions, the accuracy of the procedure was assessed using certified reference material, obtaining recoveries of 92 to 105% for the elements studied. The proposed method presented the detection limits in the range of 0.01?0.33 ?g g?1, and enrichment factors of 5; 17; 6; 25; 24; 25; 25; 25; and 13 for the analytes As5+, Cd2+, Cr3+, Co2+, Cu2+, Mn7+, Hg2+, Ni2+, and V5+, respectively. The applied chemometric tools were effective to optimize the important variables involved in the developed coprecipitation route. The proposed method presented simplicity, low cost, high sensitivity, allowing the determination of the analytes by MIP OES. |
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Palavras-Chave: |
Fish samples; Mg(OH)2; MIP OES; Multivariate optimization; Nitrogen plasma; Sample preparation. |
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Categoria do assunto: |
W Química e Física |
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Marc: |
LEADER 02116naa a2200265 a 4500
001 2127532
005 2020-12-03
008 2020 bl uuuu u00u1 u #d
024 7 $ahttps://doi.org/10.1016/j.sab.2020.105899$2DOI
100 1 $aMOREIRA, L. S.
245 $aCoprecipitation magnesium(II) hydroxide as a strategy of pre-concentration for trace elemental determination by microwave-induced plasma optical emission spectrometry.$h[electronic resource]
260 $c2020
520 $aIn this work, a method employing coprecipitation procedure with magnesium hydroxide as a carrier for separation/preconcentration of arsenic(V), cadmium(II), chromium(III), cobalt(II), copper(II), manganese(VII), mercury(II), nickel(II), and vanadium(V) was developed. The method was applied in fish and shellfish samples, and the elements were determined by microwave-induced plasma optical emission spectrometry (MIP OES). Complete two-level factorial design for four variables and a mixture design were employed to evaluate and optimize the factors involved in this system. Under optimized conditions, the accuracy of the procedure was assessed using certified reference material, obtaining recoveries of 92 to 105% for the elements studied. The proposed method presented the detection limits in the range of 0.01?0.33 ?g g?1, and enrichment factors of 5; 17; 6; 25; 24; 25; 25; 25; and 13 for the analytes As5+, Cd2+, Cr3+, Co2+, Cu2+, Mn7+, Hg2+, Ni2+, and V5+, respectively. The applied chemometric tools were effective to optimize the important variables involved in the developed coprecipitation route. The proposed method presented simplicity, low cost, high sensitivity, allowing the determination of the analytes by MIP OES.
653 $aFish samples
653 $aMg(OH)2
653 $aMIP OES
653 $aMultivariate optimization
653 $aNitrogen plasma
653 $aSample preparation
700 1 $aSÁ, I. P.
700 1 $aMACHADO, R. C.
700 1 $aNOGUEIRA, A. R. de A.
700 1 $aSILVA, E. G. P. da
700 1 $aAMARAL, C. D. B.
773 $tSpectrochimica Acta Part B$gv. 169, 105899, jul. 2020.
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