ANALYSIS OF DISSOLVED CR-3+ AND CR-6+ IN WATER BY APDC-MIBK EXTRACTION AND ATOMIC-ABSORPTION SPECTROMETRY

被引：51

作者：

BERGMANN, H

HARDT, K

机构：

[1] Bundesanstalt für Gewässerkunde, Koblenz, D-5400

来源：

FRESENIUS ZEITSCHRIFT FUR ANALYTISCHE CHEMIE | 1979年 / 297卷 / 05期

关键词：

Best. von Chrom(III); Chrom(VI) in Was-ser; Extraktion mit APDC-MIBK; Spektralphotometrie; Atomabsorption;

D O I：

10.1007/BF00480893

中图分类号：

O65 [分析化学];

学科分类号：

070302 ; 081704 ;

摘要：

With the well-known APDC-MIBK extraction of dissolved trace metals from aqueous solutions for AAS analysis only Cr6+ is determined, whereas practically no Cr3+ is extracted. This technique was therefore modified (PHP-buffer; pH 4.7-5.5; 80° C; 20 min reaction time) so that hexavalent and trivalent chromium can be extracted simultaneously into the organic phase, thus allowing determination of the percentage of each of these ionic species in water (hexavalent chromium being determined separately). A procedure for the modified extraction is described. © 1979 Springer-Verlag.

引用

页码：381 / 383

页数：3

共 8 条

[1]

Brewer P. G., 1969, STP443 ASTM, P70

[2] APDC-MIBK EXTRACTION SYSTEM FOR DETERMINATION OF TRACE ELEMENTS IN SALINE WATERS BY ATOMIC-ABSORPTION SPECTROPHOTOMETRY [J].