水中氦同位素的质谱分析

The Mass Spectrometric Measurement of Helium Isotope in Water

本文是关于水中氦浓度及其同位素质谱分析技术的研究报告。使用特制的玻璃瓶采集水样，真空脱气率大于９８％，经净化析出Ｈｅ和Ｎｅ送质谱计测量。以空气氦为标样。采用“ＡＢＡ”峰高比分析技术，对蒸馏水、泉水、西太平洋浅层海水等样品的氦浓度和氦同位素组成进行了测试。该项技术已在探讨西太平洋浅层海水氦同位素分布的研究中获得了成功的应用。

This is a studying report about helium concentration in water and about the mass spectrometric analysis technlogy of helium isotopes.the special glass bottles were used to sample the water,and the rate of vacuum degassing is higher than 98%,the He and Ne purified out were measured in mass spectrometer.Taking the He of atmosphere as standard sample and using the method of mass spectrometic peak height ratio with ABA pattern,the concentration and isotopes of helium in the samples of distilled water,spring water,shallow layer sea water of West Pacific Ocean and so on were measured.This technology has been successfully applied to the reasearch about the distribution of helium isotopes in the shallow layer sea water of West Pacific Ocean.