Photochemical alkylation of inorganic arsenic. Part 1. Identification of volatile arsenic species

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DOIResolve DOI: http://doi.org/10.1039/b503661e
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TypeArticle
Journal titleJournal of Analytical Atomic Spectrometry
ISSN0267-9477
Volume20
Issue8
Pages702708; # of pages: 7
AbstractVolatile arsenic species generated by UV irradiation of aqueous solutions of arsenite in low molecular weight (LMW) carboxylic acid media (formic, acetic, propionic and butyric) were identified using ICP-TOF-MS and GC-MS. Cryogenic trapping-GC-MS reveals that inorganic arsenite can be alkylated to yield AsH3 in the presence of formic acid, trimethylarsine in acetic acid, triethylarsine in propionic acid and tripropylarsine in butyric acid solutions. Mixed ligand arsenic species such as methylarsine, dimethylarsine, dimethylethylarsine and diethylmethylarsine are also formed when a mixture of acids is used. Using 0.05 mg l−1 As(III) as the test solution in 3.1 M acetic acid, a methylation efficiency of approximately 75% was achieved.
Publication date
LanguageEnglish
AffiliationNRC Institute for National Measurement Standards; National Research Council Canada
Peer reviewedNo
Identifier10391186
NRC number2575
NPARC number8898768
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Record identifiere85c556d-37a2-4310-927f-d8e18d58c973
Record created2009-04-22
Record modified2016-05-09
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