1. State Key Laboratory of Ore Deposit Geochemistry
2. Institute of Geochemistry
3. Chinese Academy of Sciences
4. Guiyang 550002
5. China
6. U.S. Geological Survey
7. Mercury Research Laboratory
8. Middleton
9. USA
10. University of Toronto
11. Department of Earth Sciences
12. Toronto
13. Canada
14. Arizona State University
15. School of Earth and Space Exploration
16. Tempe
17. Environmental Chemistry and Technology Program
18. University of Wisconsin-Madison
19. Madison
20. University of Wisconsin Aquatic Sciences Center