1. Key Laboratory of Groundwater Sciences and Engineering, Ministry of Natural Resources, Institute of Hydrogeology and Environmental Geology, CAGS, Shijiazhuang 050061, China
2. Key Laboratory of Groundwater Remediation of Hebei Province and China Geological Survey, Shijiazhuang 050061, China
3. School of Earth Sciences and Resources, China University of Geosciences (Beijing), Beijing 100083, China