Storage of aqueous solutions of selenium for speciation at trace level

被引：31

作者：

Heninger, I ^{[1
]}

PotinGautier, M ^{[1
]}

deGregori, I ^{[1
]}

Pinochet, H ^{[1
]}

机构：

[1] PONTIFICIA UNIV CATOLICA VALPARAISO, INST QUIM, VALPARAISO, CHILE

来源：

FRESENIUS JOURNAL OF ANALYTICAL CHEMISTRY | 1997年 / 357卷 / 06期

关键词：

D O I：

10.1007/s002160050221

中图分类号：

O65 [分析化学];

学科分类号：

070302 ; 081704 ;

摘要：

Different studies carried out in recent years on the preservation of trace selenium species in aqueous solutions are reviewed and experimental results showing a 29% oxidation of Se(IV) to Se(VI) in less than one month in acidic and oxygenated medium in the presence of chloride ions are presented. The hypothesis of an oxidation of Se(IV) to Se(VI) at acidic pH by traces of Cl-2, obtained by a reaction between chloride ions and dissolved oxygen, followed by chlorine oxidation, is examined.

引用

页码：600 / 610

页数：11

共 48 条

[1]

BOEGEL JV, 1985, 600286031 US EPA

[2] QUANTITATIVE REDUCTION OF SELENATE ION TO SELENITE IN AQUEOUS SAMPLES [J].

BRIMMER, SP ;

FAWCETT, WR ;

KULHAVY, KA .

ANALYTICAL CHEMISTRY, 1987, 59 (10) :1470-1471

[3] CRITICAL-EXAMINATION OF SOME COMMON REAGENTS FOR REDUCING SELENIUM SPECIES IN CHEMICAL-ANALYSIS [J].

BYE, R .

TALANTA, 1983, 30 (12) :993-996

[4]

CAMPANELLA L, 1989, ANALUSIS, V17, P507

[5]

CAMPANELLA L, 1985, INQUINAMENTO, V11, P56

[6] PRESERVATION AND STABILITY OF INORGANIC SELENIUM-COMPOUNDS AT PPB LEVELS IN WATER SAMPLES [J].

CHEAM, V ;

AGEMIAN, H .

ANALYTICA CHIMICA ACTA, 1980, 113 (02) :237-245

[7]

CHEAM V, 1980, 68 WAT QUAL BRANCH I

[8] EFFECT OF PHYSICOCHEMICAL PARAMETERS ON TRACE INORGANIC SELENIUM STABILITY [J].

COBO, MG ;

PALACIOS, MA ;

CAMARA, C ;

REIS, F ;

QUEVAUVILLER, P .

ANALYTICA CHIMICA ACTA, 1994, 286 (03) :371-379

[9] AQUATIC CHEMISTRY OF SELENIUM - EVIDENCE OF BIOMETHYLATION [J].

COOKE, TD ;

BRULAND, KW .

ENVIRONMENTAL SCIENCE & TECHNOLOGY, 1987, 21 (12) :1214-1219

[10] KINETIC CONTROLS ON METALLOID SPECIATION IN SEAWATER [J].

CUTTER, GA .

MARINE CHEMISTRY, 1992, 40 (1-2) :65-80

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