The effect of pressure on deuterium-hydrogen fractionation in high-temperature water

被引：72

作者：

Driesner, T ^{[1
]}

机构：

[1] ETH ZENTRUM,INST MINERAOL & PETROG,CH-8092 ZURICH,SWITZERLAND

来源：

SCIENCE | 1997年 / 277卷 / 5327期

关键词：

D O I：

10.1126/science.277.5327.791

中图分类号：

O [数理科学和化学]; P [天文学、地球科学]; Q [生物科学]; N [自然科学总论];

学科分类号：

07 ; 0710 ; 09 ;

摘要：

The pressure dependence of deuterium-hydrogen (D-H) fractionation in water to 500 degrees C and 200 megapascals has been calculated from high-temperature, high-pressure spectroscopic data, Pressure effects have a maximum at the critical temperature of water (20 per mil between 22 and 200 megapascals). Even larger effects are predicted for vaporlike densities from molecular dynamics simulations and molecular orbital calculations, Pressure effects explain many of the large discrepancies in published mineral-water D-H fractionation curves, Possible applications to natural examples include mineral-water isotope geobarometry.

引用

页码：791 / 794

页数：4

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