1. Key Laboratory for Water Quality and Conservation of the Pearl River Delta, Ministry of Education, School of Environmental Science and Engineering Guangzhou University Guangzhou 510006 China
2. Guangdong Key Laboratory of Agricultural Environment Pollution Integrated Control Guangdong Institute of Eco‐Environmental Science and Technology Guangzhou 510650 China
3. State Key Laboratory of Environmental Geochemistry Institute of Geochemistry, Chinese Academy of Sciences Guiyang 550081 China