Krypton-85 dating of shallow aquifer in Hebei Plain

• 作者: CHEN Zong-yu HU Shui-ming TU Le-yi YANG Guo-min ZHANG Xiang-yang
• 来源期刊: 地下水科学与工程：英文版
• 学科: 工学
• 年，卷（期）: dxskxygcywb_2016,（4）
• 页码范围: 328-332
• 页数: 5页
• 分类号: TV

摘要

The inert gas radioactive isotope ~(85)Kr(with a half-life of 10.74 years), due to its stable physical and chemical properties, is an ideal tracer for shallow groundwater dating. In such a dating application, first the dissolved gas is extracted from groundwater in the field, then krypton is separated from the gas sample, and finally the isotopic abundance ~(85)Kr/Kr will be determined by an ATTA instrument. According to the atmospheric input curve of ~(85)Kr, the ~(85)Kr age of groundwater is determined. We conducted ~(85)Kr analysis in three wells in Zhengding County on the plains in front of the Taihang Mountains, and made a comparison with tritium(~3H) method.