NDLI: Determination of arsenic in samples with high chloride content by inductively coupled plasma mass spectrometry

Content Provider	Royal Society of Chemistry (RSC)
Author	Ford, Mick Foulkes, Mike Ebdon, Les Branch, Simon O'Neill, Peter
Copyright Year	1991
Abstract	The arsenic content of samples with a high chloride content has been determined using inductively coupled plasma mass spectrometry (ICP-MS) with the addition of nitrogen to the carrier gas. With as little as 0.032 l min–1 nitrogen in the argon carrier gas the level of the polyatomic ion, 75ArCl+, which interferes in the determination of monoisotopic arsenic, is reduced to negligible levels. This modification is shown to be effective for the analysis of real samples, even for solutions which contain greater than 1% chloride. The presence of peaks at masses 49 and 51, when nitrogen is added, is attributed to 14N35Cl+ and 14N37Cl+, respectively. The arsenic content of reference materials, determined by nitrogen addition ICP-MS are in agreement with certificate values. Conventional argon-only ICP-MS values show an apparent 30% increase in arsenic owing to chloride interference. The nitrogen addition study has been extended to include a comparison of the total arsenic content of urine samples obtained from diet-controlled volunteers with the cumulative contribution from arsenic species determined by alternative coupled techniques.
Starting Page	151
Ending Page	154
Page Count	4
File Format	PDF
ISSN	02679477
Volume Number	6
Issue Number	2
Journal	Journal of Analytical Atomic Spectrometry
DOI	10.1039/JA9910600151
Language	English
Publisher	Royal Society of Chemistry
Access Restriction	Open
Subject Keyword	Arsenic Chloride Inductively coupled plasma mass spectrometry Nitrogen Argon Ion Urine
Content Type	Text
Resource Type	Article
Subject	Spectroscopy Analytical Chemistry

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