1. College of Environmental Science and Engineering, Guilin University of Technology, Guilin 541004, China
2. Center for Water and Ecology, State Key Joint Laboratory of Environment Simulation and Pollution Control, School of Environment, Tsinghua University, Beijing 100084, China
3. College of Earth Sciences, Guilin University of Technology, Guilin 541004, China
4. Guangxi Key Laboratory of Exploration for Hidden Metallic Ore Deposits, Guilin 541004, China
5. Guangxi Key Laboratory of Environmental Pollution Control Theory and Technology, Guilin University of Technology, Guilin 541004, China