Stable Isotope Geochemistry


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Yuri Kostitsyn <[log in to unmask]>
Fri, 21 Feb 1997 17:59:28 +0300
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    Hi Sasha,

Itís very nice to hear a word from you.
Might be I need you more then Pillinger?

Now we made a conventional fluorination line for oxygen analysis and prepare
our MI-1201 for this purpose. I want to make it suitable for relatively
small sample analysis, less than 1 micromole. Our SPVP by Sumy (do you
remember these names?) is equipment by diaphragm and is intended for inlet a
gas in molecular mode. And everybody I know here in Moscow works with
diaphragms. To eliminate fractionation we can use far less than 1% of
prepared CO2. I donít like it and third day try to calculate a capillary
system. But there are too many factors influencing on needed capillary
dimensions: diapason of sample sizes, volume of gas camera, needed signal
level, length of molecule free run, etc.

I tried to find some papers outlining such a system, but itís not a simple
task. Years of PERESTROIKA made breaches in libraries collections. Even in
BEN and GPNTB there are no last papers of C.T.Pillinger and co-authors
referenced in some works.

Now you see my problems and might be could help me by any way. Could you so
kind to send me as an example a description of any capillary inlet system Ė
a copy of a paper or technical documentation.

Thank you 

Best regards to you, Masha and her young husband.


John Valley had convinced me to use a laser for fluorination of silicates
and now I accumulate money ...
Yuri A.Kostitsyn
Head of Lab of geochronology
and isotope geochemistry
15 Veresaeva str. Moscow 121357 Russia
phone:(095)231-3755 fax:(095)443-9043