Re: Na-22

[pcharp@ix.netcom.com (Paul A. Charp )]

Mark, you might consider a third approach - volume reduction 
(solidification), capturing the volatile organics in an activated 
charcoal matrix.  Your regulatory agencies, however, may have a 
different viewpoint - it might not hurt too badly to check with them.

paul charp (pcharp@ix.netcom.com)

You wrote: 
>
>The institution I work for has a bit of a problem with some Na-22 
waste
>solution (aqueous, and possibly contaminated with organics and other
>materials). There is about 10 liters of liquid. The Na-22 has an 
activity of
>about 0.2 mCi.
>
>Two approaches have been suggested :
>
>1.  Concentrate the sodium, by precipitation or dialysis.
>2.  Transform the Na-22  (a gamma emitter) into Na-24 (a beta 
emitter), by
>neutron bombardment, or in a linear accelerator.
>
>I am really doubtful whether either of these approaches would actually
>solve our problem - which is disposal of the waste, and indeed doubt
>whether the suggestions are technically feasible.
>
>Can anyone comment ?  Alternative suggestions would be very welcome,
>but I need good technical detail, or a reference to a source of 
technical
>information.
>
>Mark Hanlon,
>Radiation Safety Officer
>The New Children's Hospital,
>PARRAMATTA,  Australia
>
>email :  MarkH@mail.kids.usyd.edu.au
>
>