Please use this identifier to cite or link to this item: http://ds.saudeindigena.icict.fiocruz.br/handle/bvs/7185
Title: Determination of mercury and selenium in biological samples by neutron activation analysis
Authors: Vasconcellos, M. B. A.
Catharino, M. G. M.
Paletti, G.
Saiki, M.
Bode, P.
Fávaro, D. I. T.
Baruzzi, R.
Rodrigues, D. A.
Affilliation: Comissão Nacional de Energia Nuclear. Instituto de Pesquisas Energéticas e Nucleares. Divisão de Radioquímica. São Paulo, SP, Brasil.
Comissão Nacional de Energia Nuclear. Instituto de Pesquisas Energéticas e Nucleares. Divisão de Radioquímica. São Paulo, SP, Brasil.
Comissão Nacional de Energia Nuclear. Instituto de Pesquisas Energéticas e Nucleares. Divisão de Radioquímica. São Paulo, SP, Brasil.
Comissão Nacional de Energia Nuclear. Instituto de Pesquisas Energéticas e Nucleares. Divisão de Radioquímica. São Paulo, SP, Brasil.
Technische Universiteit Delft. Reactor Instituut Delft. Delft, Nederland.
Comissão Nacional de Energia Nuclear. Instituto de Pesquisas Energéticas e Nucleares. Divisão de Radioquímica. São Paulo, SP, Brasil.
Universidade Federal de São Paulo. Escola Paulista de Medicina. Departamento de Medicina Preventiva. São Paulo, SP, Brasil.
Universidade Federal de São Paulo. Escola Paulista de Medicina. Departamento de Medicina Preventiva. São Paulo, SP, Brasil.
Abstract: Nuclear analytical techniques, specially neutron activation analysis (NAA) have been for a long time giving important contribution to trace element studies in the life sciences, due to their accuracy, precision, non-destructive and multielemental capabilities. In the present paper, instrumental neutron activation analysis (INAA) was applied to the determination of Hg and/or Se in several types of biological samples such as hair, nails, fish reference materials and also in selenium supplements. The hair samples analyzed were collected from a control group and mainly from Indian populational groups living in the Amazonic region, where very high Hg contents were found (means from 3.6 to 21.8 µg g‾¹), probably due to gold exploration activities and biomass burning. A comparison was made of INAA for Se using two different radioisotopes: the short-lived ⁷⁷ᵐSe (t½ 17.45 s) and the long-lived one ⁷⁵Se (t½ 119.8 d). Both methods were applied to determination of Se in samples of hair, nails and vitamin supplements.
Keywords: Instrumental neutron activation analysis
Mercury
Selenium
Biological samples
Keywords: Região Amazônica
Parque Nacional do Xingu
Amostras Biológicas
Análise instrumental de ativação de nêutrons
Selenium
DeCS: Ecossistema Amazônico
Bancos de Espécimes Biológicos
Mercúrio
Selênio
Issue Date: 2002
Publisher: Taylor and Francis
Citation: VASCONCELLOS, M. B. A. et al. Determination of mercury and selenium in biological samples by neutron activation analysis. Journal of Trace and Microprobe Techniques, v. 20, n. 4, p. 527-538, 16 Feb. 2002.
metadata.dc.identifier.doi: 10.1081/TMA-120015614
ISSN: 0733-4680
Copyright: restricted access
Appears in Collections:TR - Artigos de Periódicos

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