Simultaneous speciation of arsenic and selenium compounds by ion-chromatography with inductively coupled plasma mass spectrometry as elemental specific detector

被引:19
作者
Zheng, J [1 ]
Kosmus, W [1 ]
机构
[1] Karl Franzens Univ Graz, Inst Analyt Chem, A-8010 Graz, Austria
关键词
D O I
10.1080/10826079808003446
中图分类号
Q5 [生物化学];
学科分类号
071010 ; 081704 ;
摘要
The feasibility of simultaneous speciation of arsenic and selenium compounds after ion chromatographic separation was investigated using inductively coupled plasma mass spectrometry (ICP-MS) as multielement specific detector. Separation conditions were optimized. Under the optimized conditions, six arsenic species: arsenous acid [As (III)], methylarsonic acid (MA), dimethylarsinic acid (DMA), arsenic acid [As(V)], arsenobetaine (AsB), arsenocholine (AsC), and four selenium species: selenous acid [Se(IV)], trimethylselenonium cation (TMSe+), selenocystine (SeCys), selenomethionine (SeMet), can be separated in the same injection within 8 minutes and determined at environmental concentration levels. The detection limits are estimated in the range of 0.04-0.6 mu g/L for arsenic compounds and 0.18-0.35 mu g/L for selenium compounds.
引用
收藏
页码:2831 / 2839
页数:9
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