GEOC 79 |
| The requirement for more robust, user friendly TOC systems that permit the analysis of both fresh and salt water samples has lead to the development of the SerCon TOC-IRMS interface. Based around the SerCon CryoPrep which is used primarily for the analysis of atmospheric gases (CO2, N2O, CH4 and N2, O2) and the SerCon 20-20 IRMS it is now possible to use TOC analysers that implement sample combustion rather than the restrictive persulphate oxidation method. By utilising methods of cryotrapping and flow modification it has been demonstrated that the system is capable of measuring small (sub 1ml) sample volumes and analysing to DOC concentrations of from 10 to 0.5ppm at levels of high precision (typically 0.1 permille for 13CO2 determinations). This high performance system is ideally suited to environmental monitoring laboratories where there is a need for standalone TOC and biogenic trace gas measurements and lends itself to interfacing with the majority of commercially available TOC instruments.
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Geochemistry Poster Session
6:00 PM-8:00 PM, Wednesday, August 22, 2007 BCEC -- Exhibit Hall - B2, Poster
Division of Geochemistry |