Re: Krypton-85

[Holloway3@aol.com]

In a message dated 1/14/1999 12:31:32 PM Pacific Standard Time,
jthoms@yahoo.com writes:

<< Can anyone provide a method for measuring Krypton-85 in water samples.
 i believe it should be possible using a similar method to that used
 for Radon i.e. either the aqueous sample in contact with organic
 cocktail method or the charcoal cannister method. >>

   Krypton-85 can certainly be counted in liquid scintillation cocktail.  That
method has been used for a number of years for Kr-85 in air.   Water is a
little different though, in that the Kr-85 would have to be present in
concentrations that are quite high in order for the water to be counted
directly, without any pre-concentration.  When Kr-85 is present in air,
concentrating it into a small volume is relatively easy.  

                                                             Robert Holloway
(roberth@ntanet.net)

                                                             Nevada Technical
Associates, Inc. 

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