Biology
Scientific paper
Dec 2007
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2007agufm.v51b0564r&link_type=abstract
American Geophysical Union, Fall Meeting 2007, abstract #V51B-0564
Biology
1041 Stable Isotope Geochemistry (0454, 4870), 1094 Instruments And Techniques, 1800 Hydrology, 5200 Planetary Sciences: Astrobiology, 5400 Planetary Sciences: Solid Surface Planets
Scientific paper
Oxygen and hydrogen isotope analysis of water of crystallization is not trivial. Commonly used techniques involve off-line extraction of water from hydrated minerals and subsequent isotope analysis. Such methods are time consuming, require relatively large sample sizes and the stepwise procedure has to be carried out with extreme caution to avoid erroneous results. We present a new on-line method for analysis of oxygen and hydrogen isotope compositions of water of crystallization. Our results for gypsum (CaSO4 · 2H2O) show that the precision (1 sigma) of the method on 0.2 mg samples is better than 0.5 per mil for oxygen and 3 per mil for hydrogen isotope measurements.
Brunner Benjamin
Coleman Matthew
Mielke Randall
Rohrssen M.
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