[ RadSafe ] FW: [downwinders] DEPLETED URANIUM RESULTS IN VETERANS URINES 8 YEARS LATER

[Norm Cohen]

Hi Radsafer's; though you might find this study interesting.

Norm


Coalition for Peace and Justice; UNPLUG Salem Campaign, 321 Barr Ave,
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________________________________________
From: downwinders at yahoogroups.com [mailto:downwinders at yahoogroups.com] On
Behalf Of radwind754
Sent: Thursday, October 04, 2007 2:00 PM
To: downwinders at yahoogroups.com
Subject: [downwinders] DEPLETED URANIUM RESULTS IN VETERANS URINES 8 YEARS
LATER

 
Detection of depleted uranium in urine of veterans from the 1991 Gulf War.
Gwiazda RH, Squibb K, McDiarmid M, Smith D.
Environmental Toxicology, University of California, Santa Cruz, CA 95064,
USA. gwiazda at etox.ucsc.edu
American soldiers involved in "friendly fire" accidents during the 1991 Gulf
War were injured with depleted-uranium-containing fragments or possibly
exposed to depleted uranium via other routes such as inhalation, ingestion,
and/or wound contamination. To evaluate the presence of depleted uranium in
these soldiers eight years later, the uranium concentration and depleted
uranium content of urine samples were determined by inductively coupled
plasma mass spectrometry in (a) depleted uranium exposed soldiers with
embedded shrapnel, (b) depleted uranium exposed soldiers with no shrapnel,
and (c) a reference group of deployed soldiers not involved in the friendly
fire incidents. Uranium isotopic ratios measured in many urine samples
injected directly into the inductively coupled plasma mass spectrometer and
analyzed at a mass resolution m/delta m of 300 appeared enriched in 235U
with respect to natural abundance (0.72%) due to the presence of an
interference of a polyatomic molecule of mass 234.81 amu that was resolved
at a mass resolution m/delta m of 4,000. The 235U abundance measured on
uranium separated from these urines by anion exchange chromatography was
clearly natural or depleted. Urine uranium concentrations of soldiers with
shrapnel were higher than those of the two other groups, and 16 out of 17
soldiers with shrapnel had detectable depleted uranium in their urine. In
depleted uranium exposed soldiers with no shrapnel, depleted uranium was
detected in urine samples of 10 out of 28 soldiers. The median uranium
concentration of urines with depleted uranium from soldiers without shrapnel
was significantly higher than in urines with no depleted uranium, though
substantial overlap in urine uranium concentrations existed between the two
groups. Accordingly, assessment of depleted uranium exposure using urine
must rely on uranium isotopic analyses, since urine uranium concentration is
not an unequivocal indicator of depleted uranium presence in soldiers with
no embedded shrapnel.
PMID: 14695004 [PubMed - indexed for MEDLINE]
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