SF_6在地下水应用中的研究现状  

Advances in the Study of Applying Sulpher Hexafluoride(SF_6) in Groundwater

作　　者：李小倩[1] 周爱国[1] 张俊刚[1] 甘义群[1] 李晶晶[1] 刘存富[1] 蔡鹤生[1] 

机构地区：[1]中国地质大学环境学院,湖北武汉430074

出　　处：《地球学报》2008年第5期665-670,共6页Acta Geoscientica Sinica

基　　金：国家自然科学基金项目"年轻地下水SF6测年技术及其应用"(编号:40372112)资助

摘　　要：SF6是无味、无毒的惰性气体,难被生物降解,不易被有机质吸附,即使是在强还原环境下也没有明显地降解。目前大气中SF6的浓度约以7%的速度增长,而且已实现了大气和地下水中SF6的测试技术,其具有较为简单的分析和取样流程。SF6作为一种新的示踪剂在地下水的研究中具有潜在的应用价值,它能够较好地描述地下水运动规律、径流机理,测试地下水的滞留时间和运移速率,解释地下水的循环过程和混合作用等,在地下水的研究中发挥着重要的作用。然而我国对SF6的研究还处在起步阶段,实现SF6在地下水研究中的应用,建立SF6的长期大气观测站迫在眉睫,联合运用多种多示踪剂解决地下水中科学问题是发展的趋势之一。Sulpher hexafluoride （SF6） is an odorless, non-toxic and inert gas, with no toxic effects on human bodies and environments. It appears to be resistant to biodegradation and is not significantly adsorbed on organic matter or obviously degraded under highly reducing conditions. Currently SF6 concentration in the atmosphere is growing by about 7%, and the test technology of SF6 in the atmosphere and groundwater has been achieved with the relatively simple analytical and sampling process. SF6 is considered to be a new potential tracer in groundwater, which can well describe groundwater movement and runoff mechanism, date groundwater retention time and flow rate and explain groundwater cycle and mixing process. It will surely play an increasingly important role in groundwater studies. However, the research on SF6 is still in the initial stage in China. In order to actualize SF6 application in groundwater, it is necessary to establish long - term atmospheric SF6 observation stations. The utilization of various tracers to resolve scientific problems in groundwater is one of the trends in further researches.

关 键 词：SF6 地下水 示踪剂 

分 类 号：P641[天文地球—地质矿产勘探]