1. Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085, China
2. University of Chinese Academy of Sciences, Beijing 100049, China
3. Centre for Chemicals Management, Lancaster Environment Centre, Lancaster University, Lancaster LA1 4YQ, U.K.
4. School of Environment, Hangzhou Institute for Advanced Study, Hangzhou 310000, China
5. Division of Chemical Metrology and Analytical Science, National Institute of Metrology, Beijing 100029, China
6. China National Environmental Monitoring Centre, Beijing 100012, China
7. South-East Tibetan plateau Station for integrated observation and research of alpine environment, Chinese Academy of Sciences, Beijing 100101, China
8. Research Center of Applied Geology of China Geological Survey, Beijing 100037, China
9. College of Science, Tibet University, Tibet Autonomous Region, Lhasa 850000, PR China