1. State Key Laboratory of Environmental Geochemistry, Institute of Geochemistry, Chinese Academy of Sciences, Guiyang 550081, China
2. College of Resources and Environment, Southwest University, Chongqing 400715, China
3. University of Chinese Academy of Sciences, Beijing 100049, China
4. Center for Advances in Water and Air Quality, Lamar University, Beaumont, Texas 77710, United States