HR: 0800h
AN: V51B-0564    [Abstracts]
TI: A Rapid, Easy, and Precise Method for Oxygen and Hydrogen Isotope Analysis of Water of Crystallization in Hydrated Minerals
AU: * Rohrssen, M
EM: rohrssen@jpl.nasa.gov
AF: Planetary Science and Life Detection Section, Jet Propulsion Laboratory, Caltech, 4800 Oak Grove Drive, Pasadena, CA 91109, United States
AU: Brunner, B
EM: ben.brunner@alumni.ethz.ch
AF: Planetary Science and Life Detection Section, Jet Propulsion Laboratory, Caltech, 4800 Oak Grove Drive, Pasadena, CA 91109, United States
AU: Mielke, R
EM: Randall.E.Mielke@jpl.nasa.gov
AF: Planetary Science and Life Detection Section, Jet Propulsion Laboratory, Caltech, 4800 Oak Grove Drive, Pasadena, CA 91109, United States
AU: Coleman, M
EM: max.coleman@jpl.nasa.gov
AF: Planetary Science and Life Detection Section, Jet Propulsion Laboratory, Caltech, 4800 Oak Grove Drive, Pasadena, CA 91109, United States
AB: 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.
DE: 1041 Stable isotope geochemistry (0454, 4870)
DE: 1094 Instruments and techniques
DE: 1800 HYDROLOGY
DE: 5200 PLANETARY SCIENCES: ASTROBIOLOGY
DE: 5400 PLANETARY SCIENCES: SOLID SURFACE PLANETS
SC: Volcanology, Geochemistry, Petrology [V]
MN: 2007 Fall Meeting