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Title: | 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 |
Other Titles: | Determinação de mercúrio em fígado de tetrápodes marinhos por espectrometria de fluorescência atômica acoplada a geração de vapor frio (CV-AFS) e espectrometria de massa com fonte de plasma indutivamente acoplado (ICP-MS): uma comparação sistemática entre as duas técnicas |
Authors: | Silva, Raiza F. da Rocha, Siomara D. da Menegário, Amauri Antônio Pedrobom, Jorge Henrique Sulato, Everton Tiago Luko, Karen Silva Elias, Lucas Pellegrini Oliveira, Lucia M. de Souza Junior, Ézio Sargentini |
Keywords: | CV-AFS Mercúrio |
Issue Date: | 2021 |
metadata.dc.publisher.journal: | Quimica Nova |
metadata.dc.relation.ispartof: | Volume 44 Págs.: 64 - 69 |
Abstract: | 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 μg 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. © 2021 Sociedade Brasileira de Quimica. All rights reserved. |
metadata.dc.identifier.doi: | 10.21577/0100-4042.20170675 |
Appears in Collections: | Artigos |
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Determination.pdf | 64,06 kB | Adobe PDF | View/Open |
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