Re: Personal Air Samplers

[Ragreen1@aol.com]

Using a personal sampler at 2 liters per minute is not a problem. Analyze for
activity, not for concentration, ratio the 2 liters to ref. man's breathing
rate and you have a dosimeter that has measured intake. Ken Skrable had a
Note in Health Physics a few years back titled "When is a SALI a NALI ? " or
something very similar. The method works. Comparison of BZ sampling using
this method with Body count results show a correllation that is within the
measurement limitations of the air sampler/ counter and the body counter
systems. Many years ago, about the late sixties, Roger Caldwell gave several
papers at the New York HPS annual that showed close to 1 to 1 correllation
between this method of sampling and fecal analysis for plutonium.

As long as you think of the device as a dosimeter (intake aka cede) and not
as a air sampler( activity/volume) the problem is much simpler.

Regis A. Greenwood, CHP
ragreen1@ix.netcom.com
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