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Geochemical Journal
Geochemical Journal An open access journal for geochemistry
Published for geochemistry community from Geochemical Society of Japan.

Handling of Pt catalyst in H2-H2O equilibration method for D/H measurement of water

Takeshi Ohba, Jun-ichi Hirabayashi
Geochemical Journal, Vol. 30, No. , P. 373-377, 1996

ABSTRACT

In the H2-H2O equilibration method for D/H measurement of water samples, an improved handling of Pt catalyst was proposed. The catalyst was wrapped in a Teflon® filter to prevent dispersion of fine fragments of the catalyst. Despite a reduced rate of isotope exchange reaction, equilibrium was attained within 24 h at 25°C. A conventional unit for automatic CO2-H2O isotope exchange reaction can be used for this purpose.

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