Dear Brian,

I am afraid you won't have much luck there.

> I am looking for a laboratory that will analyze soil gas containing
> chlorinated hydrocarbons (trichloroethylene, carbon tetrachloride) for 13C
> using GC-IRMS.  Does anyone know of such a laboratory?  Thanks in advance,

Sit back for a moment and think of what happens when these
compounds hit a combustion furnace @ 800+ °C.

I don't think anybody would want to expose their combustion
furnace, interface line and ion source to reactive and corrosive
compounds such as HCl and Cl2. If you want to analyse poly-
chlorinated organics by GC/C-IRMS you would have to think of a
cleverly designed scrubber for the nasties that doesn't change gas
flow and isotopic composition (through fractionation) of your CO2
peak.

For similar reasons (poisoning of catalyst etc.), I don't like using
trifluoro-acetyl derivatives of amino acids although they afford the
best gas chromatographic separation.

Sorry for not being more positive.


Regards,

                Wolfram


***********************************
Dr. W. Meier-Augenstein, CChem MRSC
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University of Dundee, School of Life Sciences,
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URL1: http://www.dundee.ac.uk/biocentre/SLSBDIV6wma.htm
URL2: http://www.dundee.ac.uk/anatphys/wma/meieraug.htm
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