刘玲;马腾;刘存富;蔡鹤生;杨杰;姚维坤;

• 1:中国地质大学生物地质与环境地质教育部重点实验室
• 2:中国地质大学环境学院

摘要(Abstract)：

尽管氯与溴有着十分相似的化学性质,但溴与海水蒸发、氧化以及被有机体代谢方面有着独特的性质,这决定了溴同位素的测试和应用方面与氯同位素显著不同。在回顾稳定溴同位素(81Br)研究历程的基础上,重点介绍了2种测定新技术,即CF-IRMS法和GC/MC-ICP-MS法。这两种技术的优点在于:①用样量少,分别为1μmol的Br-(CF-IRMS法)和0.3 nmol的Br(GC/MC-ICP-MS法);②精度高,CF-IRMS法的内部精度优于±0.1‰,外部精度优于±0.06‰;③样品分析时间短;(4)测定对象由溴代无机物拓展到有机物。稳定溴同位素(81Br)在解决地下水的起源及演化历程、示踪地下水中有机和无机溴的污染源及降解过程、更有效地示踪海水、探讨咸水成因、为CO2地质储存提供有效依据方面的水文地质问题时有着广阔的应用前景。

关键词(KeyWords)： 稳定溴同位素;测试技术;水文地质

Abstract:

Keywords:

基金项目(Foundation): 国家自然科学基金项目(40872157);; 教育部新世纪优秀人才支持计划(NCET-07-0773)

作者(Author): 刘玲;马腾;刘存富;蔡鹤生;杨杰;姚维坤;

Email:

DOI:

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