1. a CAS Key Laboratory of Crust-Mantle Materials and the Environments, School of Earth and Space Sciences , University of Science and Technology of China , Hefei , People's Republic of China
2. b Department of Biology and Chemistry , City University of Hong Kong , Hong Kong SAR , People's Republic of China
3. c Anhui Academy of Environmental Sciences , Hefei , People's Republic of China
4. d Anhui Academy of Environmental Sciences , University of Hong Kong , Hong Kong , People's Republic of China
5. e State Key Laboratory of Loess and Quaternary Geology, Institute of Earth Environment, The Chinese Academy of Sciences , Xi'an , People's Republic of China
6. f Department of Biology and Chemistry , City University of Hong Kong , Kowloon , Hong Kong SAR , People's Republic of China
7. g Illinois State Geological Survey, University of Illinois , Champaign , IL