【作者】 张俊刚； 李晶晶； 周爱国； 刘存富；

【Author】 ZHANG Jungang LI Jingjing ZHOU Aiguo LIU Cunfu School of Environmental Science,China University of Geosciences,Wuhan,Hubei,430074

【机构】 中国地质大学环境学院；

【摘要】 SF₆是一种无色、无嗅、无毒、不易燃的惰性气体,具有良好的绝缘性、灭弧性和散热性。由于SF₆具有化学惰性、大气圈和水圈中本底浓度低、检测灵敏度高等优点,它成为一种较为理想的大气、水文示踪剂。另外,在年轻地下水测年领域,SF₆法已经逐渐有取代其他测年工具（³H 法、CFCs 法、³H/³He 法）的趋势,特别适合研究1970年以后补给水的年龄。本文基于气相色谱仪和电子捕获检测器,设计了一套SF₆提取制样分析系统,发展了SF₆测试技术。更多还原

【Abstract】 SF₆ is a colorless,odorless,nontoxic,and nonflammable inert gas with excellent electric insulating and arc-quenchingproperties.The attraction of SF₆ as an ideal atmospheric and hydrologic tracer is enhanced by its chemical and biological inertness andits low concentration in atmosphere and hydrosphere.Also,in the field of young groundwater dating,SF₆ shows a gradual trend toreplace other dating tools such as ³H,CFCs and ³H/³He.It is especially suitable for dating the water recharged since 1970.The highsensitivity of the electron capture detector to SF₆ has led the authors to develop an analytical technique for the measurement of SF₆.更多还原