Determination of mercury and selenium in biological samples by neutron activation analysis

Show simple item record Vasconcellos, MBA Catharino, MGM Paletti, G. Saiki, M. Bode, P. Favaro, DIT Baruzzi, R. Rodrigues, D. A. 2016-01-24T12:33:12Z 2016-01-24T12:33:12Z 2002-01-01
dc.identifier.citation Journal of Trace and Microprobe Techniques. New York: Marcel Dekker Inc, v. 20, n. 4, p. 527-538, 2002.
dc.identifier.issn 0733-4680
dc.description.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 mug 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 Se-77m (t(1/2) = 17.45 s) and the long-lived one Se-75 (t(1/2) = 119.8 d). Both methods were applied to determination of Se in samples of hair, nails and vitamin supplements. en
dc.format.extent 527-538
dc.language.iso eng
dc.publisher Marcel Dekker Inc
dc.relation.ispartof Journal of Trace and Microprobe Techniques
dc.rights Acesso restrito
dc.subject instrumental neutron activation analysis en
dc.subject mercury en
dc.subject selenium en
dc.subject biological samples en
dc.title Determination of mercury and selenium in biological samples by neutron activation analysis en
dc.type Artigo
dc.contributor.institution IPEN CNEN
dc.contributor.institution Delft Univ Technol
dc.contributor.institution Universidade Federal de São Paulo (UNIFESP)
dc.description.affiliation IPEN CNEN, Div Radiochem, BR-05422970 São Paulo, SP, Brazil
dc.description.affiliation Delft Univ Technol, Interfac Reactor Inst, NL-2629 JB Delft, Netherlands
dc.description.affiliation UNIFESP, Dept Prevent Med, São Paulo, Brazil
dc.description.affiliationUnifesp UNIFESP, Dept Prevent Med, São Paulo, Brazil
dc.identifier.doi 10.1081/TMA-120015614
dc.description.source Web of Science
dc.identifier.wos WOS:000179633000009


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