[CPEO-MEF] Perchlorate forensics

[Lenny Siegel <lsiegel@cpeo.org>]

Perchlorate Isotope Forensics

John Karl Böhlke,* Neil C. Sturchio, Baohua Gu, Juske Horita, Gilbert M. 
Brown, W. Andrew Jackson, Jacimaria Batista,# and Paul B. Hatzinger

Analytical Chemistry
December 1, 2005

Abstract:

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.

To download the full article, go to
http://pubs.acs.org/cgi-bin/abstract.cgi/ancham/2005/77/i23/abs/ac051360d.html

--
Lenny Siegel
Director, Center for Public Environmental Oversight
c/o PSC, 278-A Hope St., Mountain View, CA 94041
Voice: 650/961-8918 or 650/969-1545
Fax: 650/961-8918
http://www.cpeo.org
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