SEPARATION OF CR(III) AND CR(VI) USING COMPLEXATION OF CR(III) WITH 8-HYDROXYQUINOLINE AND DETERMINATION OF BOTH SPECIES IN WATERS BY ETA-AAS

被引：36

作者：

BECEIROGONZALEZ, E ^{[1
]}

BARCIELAGARCIA, J ^{[1
]}

BERMEJOBARRERA, P ^{[1
]}

BERMEJOBARRERA, A ^{[1
]}

机构：

[1] FAC CHEM SANTIAGO,DEPT ANALYT CHEM NUTR & BROMATOL,E-15706 SANTIAGO,SPAIN

来源：

FRESENIUS JOURNAL OF ANALYTICAL CHEMISTRY | 1992年 / 344卷 / 7-8期

关键词：

D O I：

10.1007/BF00321836

中图分类号：

O65 [分析化学];

学科分类号：

070302 ; 081704 ;

摘要：

A method for the determination of chromium(III) and (VI) species has been studied and applied to mineral water samples. The chromium(III) was chelated with 0.1 mol/18-hydroxyquinoline in methyl alcohol, extracted in isobutyl methyl ketone and determined by ETA-AAS. The effects of the pH, extraction and heating time and amounts of the reagents required for the extraction were studied. A method for the determination of total chromium was optimized too, and the chromium(VI) can be calculated. The precision, sensibility, accuracy, graphite furnace program and interferences for both methods were also investigated.

引用

页码：301 / 305

页数：5

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