Bismuth as a general internal standard for lead in atomic absorption spectrometry
Contribuinte(s) |
Universidade Estadual Paulista (UNESP) |
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Data(s) |
03/12/2014
03/12/2014
11/06/2014
|
Resumo |
Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP) Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES) Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq) Processo FAPESP: 12/13500-9 Processo FAPESP: 12/23323-7 Bismuth was evaluated as internal standard for Pb determination by line source flame atomic absorption spectrometry (LS FAAS), high-resolution continuum source flame atomic absorption spectrometry (HR-CS FAAS) and line source graphite furnace atomic absorption spectrometry (LS GFAAS). Analysis of samples containing different matrices indicated close relationship between Pb and Bi absorbances. Correlation coefficients of calibration curves built up by plotting A(Pb)/A(Bi) versus Pb concentration were higher than 0.9953 (FAAS) and higher than 0.9993 (GFAAS). Recoveries of Pb improved from 52-118% (without IS) to 97-109% (IS, LS FAAS); 74-231% (without IS) to 96-109% (IS, HR-CS FAAS); and 36-125% (without IS) to 96-110% (IS, LS GFAAS). The relative standard deviations (n = 12) were reduced from 0.6-9.2% (without IS) to 0.3-4.3% (IS, LS FAAS); 0.7-7.7% (without IS) to 0.1-4.0% (IS, HR-CS FAAS); and 2.1-13% (without IS) to 0.4-5.9% (IS, LS GFAAS). (C) 2014 Elsevier B.V. All rights reserved. |
Formato |
24-30 |
Identificador |
http://dx.doi.org/10.1016/j.aca.2014.05.002 Analytica Chimica Acta. Amsterdam: Elsevier Science Bv, v. 831, p. 24-30, 2014. 0003-2670 http://hdl.handle.net/11449/113175 10.1016/j.aca.2014.05.002 WOS:000336391600002 |
Idioma(s) |
eng |
Publicador |
Elsevier B.V. |
Relação |
Analytica Chimica Acta |
Direitos |
closedAccess |
Palavras-Chave | #Universal internal standard #Bismuth #Lead #Atomic absorption spectrometry |
Tipo |
info:eu-repo/semantics/article |