摘要
地下水年龄是水文地质研究的重要参数,特别是年轻地下水的年龄。论述了安装设计的用于地下水中SF6的测试技术,该技术装置由SF6提取系统和分析测试系统两部分组成,前者由剥离器、硅胶管、冷冻富集陷阱、六通阀、十通阀、高纯氮气钢瓶和载气过滤系统组成,后者由带电子捕获检测器(ECD)的气相色谱仪组成。通过条件实验,该系统测定SF6的标准误差为1.77%,对SF6的最低检测极限为1.0×10-12,测定空气中的SF6只需10mL气体,测定地下水样时只需1.0L。研究了地下水SF6年龄的计算程序,计算了石家庄市浅层地下水的年龄。
Groundwater age, especially the young groundwater age, is an important parameter. The testing method of dating young groundwater with SF6 is designed and installed. It is unitized in two parts： distilling system and testing system. The former system is made up of stripper, silicone tube, freezing and enrichment trap, six-way valve, ten-way valve, high-purity nitrogen tube. The latter is a gas-phase chromatographic apparatus with electronic catcher detector. By condition experiment, the standard error of this testing method is 1.77%, the minimum of detecting SF6 is 1.0×10^-12, Only 10.0 mL air is needed in determiningthe SF6 of air, and 1.0 L water in determining the SF6 in the ground water. Besides, the shallow groundwater in Shijiazhuang city is dated by the program of calculating SF6 age.
出处
《地质科技情报》
CAS
CSCD
北大核心
2007年第4期97-102,共6页
Geological Science and Technology Information
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"(40372112)
关键词
SF6
气相色谱仪
浅层地下水年龄
SF6
gas-phase chromatographic apparatus
age of shallow groundwater
作者简介
周建伟（1975-），男，讲师，主要从事城市环境地质及同位素水文学方面的教学与科研工作。
