GEOC 15 |
| The analysis of the stable isotopes of the elements CHNS and O can give useful information on the geographic origin and the authenticity of a sample. For this purpose, traditionally, multiple analysis of one sample has to be done. This is very time consuming and costly. Based on our experiences with the elemental analysis of inhomogeneous biological material we developed a measurement system for the simultaneous analysis of carbon, hydrogen, nitrogen and sulfur stable isotopes. With this system, all four elements (CHNS) can be analyzed from one sample. The sample combustion takes place in a vario EL III elemental analyzer. The combustion gases are separated through a purge&trap system and H2O is reduced to H2 at 600°C with magnesium. After passing through a TCD the isotope analysis takes place in an IRMS instrument relative to international standards. The system can be converted to analyze O and H isotopes in pyrolysis mode, if required. |
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Modern Calibrations and Terrestrial Applications of Stable Isotope Paleo Proxies
1:30 PM-5:10 PM, Sunday, August 19, 2007 Boston Park Plaza -- St. James Rm, Oral
Division of Geochemistry |