Re: Radioactive tracer application

[Schoenhofer <schoenho@via.at>]

At 06:57 13.09.1996 -0500, you wrote:
>I'm looking for a gamma-emitting radioactive compound which can be used 
>as a tracer for oil in oil-mist extraction systems. The photon emission 
>energy should, for preference, be in the range 100 to 200 kev. There 
>seems to be no prospect of labelling the oil itself since it is almost 
>pure hydrcarbon. The tracer should mix readily with the oil and not be 
>differentially extracted from it. Does anyone have any suggestions as to 
>what might be suitable and practicable? Please reply to :-
>
>C.B.Clayton@ncl.ac.uk
>
>.................................................................

Hi,

There is quite a number of oil soluble compounds commercially available
which contain C-14 or tritium. Have you ever thought of using beta-emitters?
They can be easily detected with liquid scintillation spectrometry. C-14
would also have the advantage of high counting efficiency and low
radiotoxicity, tritium not having high counting efficiency, but being even
much less radiotoxic. In case of more interest contact me at my private address.

Franz
Schoenhofer
Habichergasse 31/7
A-1160 WIEN
AUSTRIA/EUROPE
Tel./Fax:	+43-1-4955308
Tel.:		+43-664-3380333
e-mail:		schoenho@via.at