SV: [ RadSafe ] Depleted Uranium Found In Urine 20 Years Later
Olsson Mattias :MSO
mso at forsmark.vattenfall.se
Wed Oct 31 01:26:07 CDT 2007
That comment about the "old-fashioned" alpha sceptroscopy was weird.
Disregarding the VAST dependence on the half-life of the nuclide. A more
sensitive MS should move the limit for when the MS is a better choice
(towards shorter half-lives) but that comment smells more to me like
arguments such as "wind power is better than old-fashioned nuclear".
/Mattias Olsson, Sweden
At 10:59 PM 10/28/2007, Roger Helbig wrote:
>I rather wonder if the test proves that DU is there or that uranium
>is there -- I have asked Dr Parrish what steps he has taken to
>preclude natural uranium being reported as being DU. The "aerosol"
>comment makes it sound like Parrish was not particularly unbiased
>when he began this testing.
October 29, 2007
The sector field - inductively coupled plasma - mass spectrometry
(SF-ICP-MS) and multiple collector - inductively coupled plasma -
mass spectrometry (MC-ICP-MS) can provide incredibly accurate
measurements of all uranium isotopes in urine including U-234, U-235,
U-236, U-238. [I think that this method has also been applied to to
plutonium isotopes, and it is far more accurate and precise that
old-fashioned alpha particle energy spectra counting.]
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