COMPARISON OF SELENIUM EXTRACTION PROCEDURES FOR ITS SPECIATION IN BIOLOGICAL-MATERIALS

Authors
POTINGAUTIER M GILON N ASTRUC M DEGREGORI I PINOCHET H
Citation
M. Potingautier et al., COMPARISON OF SELENIUM EXTRACTION PROCEDURES FOR ITS SPECIATION IN BIOLOGICAL-MATERIALS, International journal of environmental analytical chemistry, 67(1-4), 1997, pp. 15-25
Citations number
39
Categorie Soggetti
Environmental Sciences","Chemistry Analytical
Journal title
International journal of environmental analytical chemistry → ACNP
ISSN journal
03067319
Volume
67
Issue
1-4
Year of publication
1997
Pages
15 - 25
Database
ISI
SICI code
0306-7319(1997)67:1-4<15:COSEPF>2.0.ZU;2-O
Abstract
Extraction procedures of selenium compounds applied to solid biologica l samples (CRM 186: pig kidney, CRM 402: white clover and a selenium e nriched yeast) are discussed. Enzymic hydrolysis led to high recoverie s (57% to 92%, depending on the sample). A hyphenated High Performance Liquid Chromotography-Electrothermal Atomic Absorption Spectrometry t echnique is used to study the speciation of selenium in the enzymic ex tracts. Organic compounds: selenomethionine and selenocystine are foun d as major components in these samples, 39%, 56% and 77% for clover, k idney and yeast, respectively.