Perchlorate Isotope Forensics

Perchlorate has been detected recently in a variety of soils, waters, plants, and food products at levels that may be detrimental to human health. These discoveries have generated considerable interest in perchlorate source identification. In this study, comprehensive stable isotope analyses (37Cl/3...

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Bibliographic Details
Published in:Analytical chemistry (Washington) 2005-12, Vol.77 (23), p.7838-7842
Main Authors: Böhlke, John Karl, Sturchio, Neil C, Gu, Baohua, Horita, Juske, Brown, Gilbert M, Jackson, W. Andrew, Batista, Jacimaria, Hatzinger, Paul B
Format: Article
Language:English
Subjects:
Analytical chemistry
Applied sciences
Chemistry
Contamination
Exact sciences and technology
Global environmental pollution
Isotopes
Pollution
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Summary:Perchlorate has been detected recently in a variety of soils, waters, plants, and food products at levels that may be detrimental to human health. These discoveries have generated considerable interest in perchlorate source identification. In this study, comprehensive stable isotope analyses (37Cl/35Cl and 18O/17O/16O) of perchlorate from known synthetic and natural sources reveal systematic differences in isotopic characteristics that are related to the formation mechanisms. In addition, isotopic analyses of perchlorate extracted from groundwater and surface water demonstrate the feasibility of identifying perchlorate sources in contaminated environments on the basis of this technique. Both natural and synthetic sources of perchlorate have been identified in water samples from some perchlorate occurrences in the United States by the isotopic method.
ISSN:0003-2700
1520-6882
DOI:10.1021/ac051360d