Simultaneous Speciation of Arsenic and Selenium Compounds by ION-Chromatography with Inductively Coupled Plasma Mass Spectrometry as Elemental Specific Detector
- 1 November 1998
- journal article
- research article
- Published by Taylor & Francis in Journal of Liquid Chromatography & Related Technologies
- Vol. 21 (18) , 2831-2839
- https://doi.org/10.1080/10826079808003446
Abstract
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 μg/L for arsenic compounds and 0.18–0.35 μg/L for selenium compounds.Keywords
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