海水的氯同位素组成特征  

The Character of Isotopic Compositions of Chlorine in Ocean Water

作　　者：肖应凯[1] 周引民[1] 刘卫国[2] 洪阿实[3] 王庆忠[1] 王蕴慧[1] 魏海珍[1] P.V.Shirodkar 

机构地区：[1]中国科学院青海盐湖研究所,青海西宁810008 [2]中国科学院黄土与第四纪地质国家重点实验室,陕西西安710054 [3]国家海洋局第三海洋研究所,福建厦门361005 [4]National Institute of Oceanography

出　　处：《矿物岩石地球化学通报》2001年第4期406-408,共3页Bulletin of Mineralogy, Petrology and Geochemistry

基　　金：国家自然科学基金资助项目 ( 2 9775 0 2 8)

摘　　要：本研究采用基于Cs2 Cl+离子的正热电离质谱法测定了海水中的氯同位素组成。结果表明海水的3 7　Cl 3 5Cl值基本上是均一的 ,平均值为 0 .3190 93,变化范围为 0 .318782～ 0 .3192 2 1。相对于某一标准海水的表面海水的δ3 7Cl值与包括海水温度、盐度、经纬度在内的所有因素基本无关。但不同深度的海水的δ3 7Cl值随深度而降低 ;δ3 7Cl值也显然与大陆注入水和区域有关。The chlorine isotopic composition of ocean water was determined using thermal ionization mass spectrometry based on the measurement of Cs 2Cl + ion. The results show that the 37Cl/ 35Cl ratios are basically homogeneous with an average value of 0.319 030, with natural variation from 0.318 782-0.319 221. The δ 37Cl values of surface seawater are not relative to all parameters of samples, including temperature, salinity, latitude and longitude. However the results for isotopic composition of chlorine in seawater samples with different depth shows that the δ 37Cl values decrease with depth down. The variations of δ 37Cl values apparently associate with continental inflow and region.

关 键 词：氯 同位素组成 海水 

分 类 号：P736.4[天文地球—海洋地质]