Amzad
We use a TIC/TOC analyzer system interfaced to a continuous flow IRMS for
13C analysis of DIC and DOC. In this system, phosphoric acid drives DIC to
CO2, which is purged from the sample. Then a persulfate digestion is used to
convert DOC to DIC, which is converted to CO2 and transferred to He carrier.
-Bill

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Bill Holmes
UC-Davis Stable Isotope Facility
2220 Plant & Env Sci
One Shields Ave
Davis, CA 95616
Phone: (530) 752-8100
FAX: (530) 752-4361
stableisotopefacility.ucdavis.edu
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-----Original Message-----
From: Stable Isotope Geochemistry [mailto:[log in to unmask]] On Behalf
Of Amzad Hussain
Sent: Monday, April 07, 2008 12:04 PM
To: [log in to unmask]
Subject: [ISOGEOCHEM] stable isotopic measurement of DOC

Hi everyone
I would like to know how CO2 can be extracted from Dissolved Organic
Carbon for stable isotopic analysis?

Thanks
Amzad