Speciation of Cr(III) and Cr(VI) in potable waters by using activated neutral alumina as collector and ET-AAS for determination

被引：64

作者：

Sahayam, AC ^{[1
]}

机构：

[1] Bhabha Atom Res Ctr, Natl Ctr Composit Characterisat Mat, ECIL PO, Hyderabad 500062, Andhra Pradesh, India

来源：

ANALYTICAL AND BIOANALYTICAL CHEMISTRY | 2002年 / 372卷 / 7-8期

关键词：

speciation; CR(III); CR(VI); activated neutral alumina; ET-AAS;

D O I：

10.1007/s00216-002-1261-7

中图分类号：

Q5 [生物化学];

学科分类号：

071010 ; 081704 ;

摘要：

The speciation of Cr(III) and Cr(VI) has been performed by using activated neutral alumina as adsorbent. Both species were quantitatively adsorbed on a small column filled with neutral alumina. The adsorbed Cr(III) was eluted with 4 mol L-1 HNO3 and Cr(VI) with 1.0 mol L-1 ammonia solution. Recoveries of Cr(III) and Cr(VI) were 99% and 100%, respectively. Using ET-AAS for Cr determination the limit of detection in the sample was 0.01 mug L-1. The combined procedure is fast and sensitive. It can be applied for routine analysis of water samples at sub-mug L-1 levels with a relative standard deviation (RSD) of 2-10% (three determinations).

引用

页码：840 / 842

页数：3

共 12 条

[1]

AHMED S, 1990, ANALYST, V115, P287

[2]

BERMAN E, 1980, TOXIC METALS THEIR A

[3] Atomic spectrometry update. Environmental analysis [J].