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Re: Standard addition of tritium; speciation problems?
Arvic
Yes, I would always "split" the sample and add a known amount of tritium to
the control to get the efficency.
_______________________
John R Johnson, PhD
idias@interchange.ubc.ca
----- Original Message -----
From: "Arvic Harms" <Arvic.Harms@npl.co.uk>
To: <radsafe@list.vanderbilt.edu>
Sent: Tuesday, October 01, 2002 5:42 AM
Subject: Standard addition of tritium; speciation problems?
> Dear all,
>
> I have a question concerning liquid scintillation counting (LSC). Is the
> efficiency for every chemical form of tritium under identical
> experimental conditions the same (i.e., is it good idea to add a
> standardised HTO source to a source containing an organic tritium form
> (e.g., thymidine) in order to determine the activity of this organic
> tritium form)? Anybody any ideas?
>
> Thanks,
>
> Arvic Harms
>
>
> Dr Arvic Harms
> Centre for Ionising Radiation Metrology
> National Physical Laboratory
> Queens Road
> Teddington, Middlesex
> TW11 0LW
> United Kingdom
>
> E-mail: arvic.harms@npl.co.uk
> Tel ++44 20 8943 8512
> Fax ++44 20 8614 0488
>
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