1. Key Laboratory of Surficial Geochemistry of the Ministry of Education, School of Earth Sciences and Engineering, Nanjing University, Nanjing 210023, China
2. National Centre for Groundwater Research and Training and College of Science and Engineering, Flinders University, Adelaide, SA 5001, Australia
3. Water Resources Division, Department of Environment, Parks and Water Security, Northern Territory Government, Palmerston, NT 0830, Australia