CHROMIUM SPECIATION USING ION-CHROMATOGRAPHY ATOMIC-ABSORPTION SYSTEM WITH ONLINE PRECONCENTRATION

被引：19

作者：

FONG, WL

WU, JCG

机构：

[1] Department of Chemistry, National Taiwan Normal University, Taipei

来源：

SPECTROSCOPY LETTERS | 1991年 / 24卷 / 7-8期

关键词：

D O I：

10.1080/00387019108020672

中图分类号：

O433 [光谱学];

学科分类号：

0703 ; 070302 ;

摘要：

A method using ion chromatography-atomic absorption system (IC-AA) with on-line preconcentration unit is developed for the speciation of chromium in aqueous samples. Both Cr(III) and Cr(VI) species are pretreated with sodium salt of ethylenediaminetetraacetic acid (EDTA) in consecutive steps. The treated samples can then be injected into an on-line preconcentration unit followed by ion chromatographic separation with UV or selective flame AA detection. Both chromium species can be separated within 10 minutes, and the method is applicable for aqueous samples with ppm levels of chromium.

引用

页码：931 / 941

页数：11

共 15 条

[1] METAL SPECIATION BY FLOW-INJECTION ANALYSIS [J].