海洋的稳定氯同位素组成

The Variation of Stable Chlorine Isotopic Compositions in Ocean

用Cs2Cl+正热电高质谱法，测定了海洋中不同区域表层海水样品的稳定氯同位素组成。结果表明海洋中的δ37Cl值并非均匀一致，尤其在高经度地区变化明显。δ37Cl值的变化与海水的盐度和所处的经度有一定机关性。建议使用一个统一确定的海水样品做为稳定氯同位素地球化学研究的氯同位素标准参考物质。

The isotopic compositions of chlorine in ocean have been determined by using themal ionization mass spectrometry based on the measurement of Cs2Cl+ ion. The results show that the δ37Cl in ocean aren't average. The variations are relative to longitude of samples. Text suggested that it would be more prescise to use a defined sea water as the isotopic standard of chlorine for the study of isotopic geochemistry of chlorine.