Issue 7, 2001
From the journal:

Analyst

Investigation of arsenic speciation in oyster test reference material by multidimensional HPLC-ICP-MS and electrospray tandem mass spectrometry (ES-MS-MS)

Shona McSheehy,a   Paweł Pohl,†a   Ryszard Łobińskia  and  Joanna Szpunar*a  

* Corresponding authors

a CNRS UMR 5034, Hélioparc, 2 rue Pr. Angot, Pau-Pyrénées, France

Abstract

Multidimensional (size-exclusion–anion-exchange–cation-exchange) liquid chromatography with ICP-MS detection was developed to produce a map of water-soluble species in an oyster test reference material. The presence of arsenobetaine, trimethyl(2-carboxyethyl)arsonium inner salt, arsenocholine, dimethylarsonic acid, tetramethylammonium ion, As(V) and two arsenosugars was demonstrated by ES-MS-MS. A previously unreported compound was isolated and identified by ES-MS-MS as 5-dimethylarsinoyl-β-ribofuranose. Anion-exchange chromatography was optimized to produce a chromatographically pure peak of arsenobetaine (accounting for ca. 64% of all water-soluble As present) that was used to quantify this compound.

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Article information

DOI
https://doi.org/10.1039/B102225N
Article type
Paper
Submitted
08 Mar 2001
Accepted
27 Apr 2001
First published
14 Jun 2001

Analyst, 2001,126, 1055-1062

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Investigation of arsenic speciation in oyster test reference material by multidimensional HPLC-ICP-MS and electrospray tandem mass spectrometry (ES-MS-MS)

S. McSheehy, P. Pohl, R. Łobiński and J. Szpunar, Analyst, 2001, 126, 1055 DOI: 10.1039/B102225N

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