A METHOD TO EXTRACT SOIL-WATER FOR STABLE ISOTOPE ANALYSIS

被引：144

作者：

REVESZ, K ^{[1
]}

WOODS, PH ^{[1
]}

机构：

[1] CTR RES GROUNDWATER PROC,ADELAIDE,SA 5064,AUSTRALIA

来源：

JOURNAL OF HYDROLOGY | 1990年 / 115卷 / 1-4期

关键词：

D O I：

10.1016/0022-1694(90)90217-L

中图分类号：

TU [建筑科学];

学科分类号：

0813 ;

摘要：

A method has been developed to extract soil water for determination of deuterium (D) and 18O content. The principle of this method is based on the observation that water and toluene form an azeotropic mixture at 84.1°C, but are completely immiscible at ambient temperature. In a specially designed distillation apparatus, the soil water is distilled at 84.1°C with toluene and is separated quantitatively in the collecting funnel at ambient temperature. Traces of toluene are removed and the sample can be analyzed by mass spectrometry. Kerosene may be substituted for toluene. The accuracy of this technique is ± 2 and ± 0.2‰, respectively, for δD and δ18O. Reduced accuracy is obtained at low water contents. © 1990.

引用

页码：397 / 406

页数：10

共 20 条

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[12] MULTISAMPLE CONVERSION OF WATER TO HYDROGEN BY ZINC FOR STABLE ISOTOPE DETERMINATION [J].