STORAGE OF AQUEOUS-SOLUTIONS OF SELENIUM FOR SPECIATION AT TRACE-LEVEL

Authors
HENINGER I POTINGAUTIER M DEGREGORI I PINOCHET H
Citation
I. Heninger et al., STORAGE OF AQUEOUS-SOLUTIONS OF SELENIUM FOR SPECIATION AT TRACE-LEVEL, Fresenius' journal of analytical chemistry, 357(6), 1997, pp. 600-610
Citations number
48
Categorie Soggetti
Chemistry Analytical
Journal title
Fresenius' journal of analytical chemistry → ACNP
ISSN journal
09370633
Volume
357
Issue
6
Year of publication
1997
Pages
600 - 610
Database
ISI
SICI code
0937-0633(1997)357:6<600:SOAOSF>2.0.ZU;2-7
Abstract
Different studies carried out in recent years on the preservation of t race selenium species in aqueous solutions are reviewed and experiment al results showing a 29% oxidation of Se(IV) to Se(VI) in less than on e month in acidic and oxygenated medium in the presence of chloride io ns are presented. The hypothesis of an oxidation of Se(IV) to Se(VI) a t acidic pH by traces of Cl-2, obtained by a reaction between chloride ions and dissolved oxygen, followed by chlorine oxidation, is examine d.