1. Institute of Geophysical & Geochemical Exploration, Chinese Academy of Geological Sciences, Langfang, People’s Republic of China
2. Research Center of Geochemical Survey and Assessment on Land Quality, China Geological Survey, Langfang, People’s Republic of China
3. Key Laboratory of Geochemical Cycling of Carbon and Mercury in the Earth's Critical Zone, Chinese Academy of Geological Sciences, Langfang, People’s Republic of China