Publicação: DETERMINATION OF MERCURY IN LIVER OF MARINE TETRAPODS BY COLD VAPOR ATOMIC FLUORESCENCE SPECTROMETRY AND INDUCTIVELY COUPLED PLASMA MASS SPECTROMETRY IN BIOLOGICAL SAMPLES: A SYSTEMATIC COMPARISON BETWEEN THE TWO TECHNIQUES
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Data
Orientador
Coorientador
Pós-graduação
Curso de graduação
Título da Revista
ISSN da Revista
Título de Volume
Editor
Soc Brasileira Quimica
Tipo
Artigo
Direito de acesso
Acesso aberto
Resumo
This study compares the techniques cold vapour atomic fluorescence spectrometry (CV-AFS) and inductively coupled plasma mass spectrometry (ICP-MS) for the determination of Hg in biological samples (hepatic tissue from marine tetrapods). Acid digestions were performed for the samples and aliquots of them were analysed by ICP-MS and CV-AFS. To minimize the Hg memory effect in its determination by ICP-MS, gold (200 mu g L-1 in 5% v v(-1) HCl) was added to the sample digests. The detection limits were 0.02 mg kg(-1) for ICP-MS and 0.01 mg kg(-1) for CV-AFS. Accuracy was assessed by the calculation of the recovery obtained from TORT-3 (lobster hepatopancreas) certified reference material analysis. Accurate results were obtained for both CV-AFS and ICP-MS. The comparison of the results obtained for hepatic tissue with and without lyophilization showed a significant difference among them (at 95% of confidence level), evidencing losses of Hg in the lyophilization process.
Descrição
Palavras-chave
Mercury, Marine Tetrapod, Hg Memory Effect, ICP-MS, CV-AFS
Idioma
Português
Como citar
Quimica Nova. Sao Paulo: Soc Brasileira Quimica, v. 44, n. 1, p. 64-69, 2021.
