Re: Flourimeter

[Brian_Gaulke@hc-sc.gc.ca]

I don't know anything about this technique, but isn't it the other way around.
I.e., the results tell you the activity concentration, but without isotopic
ratios you don't know the mass concentration?

Brian R. Gaulke, CHP
Brian_Gaulke@hc-sc.gc.ca





"Tony Harrison" <laharris@smtpgate.dphe.state.co.us> on 2000/03/31 10:23:33

Please respond to radsafe@romulus.ehs.uiuc.edu

To:   Multiple recipients of list <radsafe@romulus.ehs.uiuc.edu>
cc:    (bcc: Brian Gaulke)

Subject:  Re: Flourimeter




Uranium by fluorimetry works very well down to approximately 3 micrograms per
liter.  The drawback for HP types is that it works for total uranium, by which I
mean that no isotopic info is available.  To convert to activity you have to
know (or assume) something of the isotopic ratios.

>>> Justin Wilde <jlwilde@eng.utah.edu> 03/30/00 07:58PM >>>
I hoping someone on radsafe might be able to provide me with some insight
to a detection method that I have been unable to find more information on.
The process is for uranium bioassay (circa 1960's) which involed drying an
aliquot of sample on a platinum disk and drying.  The disk was then
covered with a sodium flouride pellet and counted in a flourimeter.  I
understand the theory behind the counting technique but I was hoping
someone might have an idea of the efficiency or minimum detection limit
for measuring by this method. Thanks in advance for any information.

Justin Wilde


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