Gas chromatography–mass spectrometric identification of iodine species arising from photo-chemical vapor generation

From National Research Council Canada

DOIResolve DOI: https://doi.org/10.1016/j.sab.2009.06.009
AuthorSearch for: 1; Search for: 1ORCID identifier: https://orcid.org/0000-0002-2377-2615; Search for: ; Search for: 1
Name affiliation
  1. National Research Council of Canada. NRC Institute for National Measurement Standards
FormatText, Article
Journal titleSpectrochimica Acta Part B: Atomic Spectroscopy
ISSN0584-8547
Volume64
Issue7
Pages714–716
Abstract
Ultraviolet irradiation of aqueous solutions of iodide/iodate ion containing low molecular weight organic acids generates volatile iodine species that are amenable to detection by atomic spectrometry. In the presence of formic, acetic or propionic acids, photo-chemical generation results in the formation of HI, methyl- and ethyl-iodide respectively, the latter two products being directly identified by gas chromatography–mass spectrometry. Deuterium and ¹³C-labeled reagents were employed to elucidate the provenance of the alkyl group. Use of ¹³CH₃–COOH produced ¹³CH₃–I; deuterated acetic acid (D₃C-COOD) resulted in the formation of CD₃–I. These observations indicate direct transfer of the alkyl group from the carboxylic acid to iodide, consistent with the suggestion that the mechanism of synthesis involves radical induced reactions.
Publication date
LanguageEnglish
Peer reviewedYes
IdentifierS0584854709001670
NPARC number21277195
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