The Key Laboratory of Karst Environment and Geohazard Prevention, Guizhou University, Guiyang 550003, China;
College of Resources and Environments, Southwest University, Chongqing 400715, China;
State Key Laboratory of Ore Deposit Geochemistry, Institute of Geochemistry, Chinese Academy of Sciences, Guiyang 550002, China;
Department of Civil and Environmental Engineering, Environmental Chemistry and Technology Program, University of Wisconsin-Madison, Madison, WI 53706, USA;