1. School of Environmental Science and Engineering
2. Tianjin University
3. Tianjin 300072
4. PR China
5. School of Chemistry and Chemical Engineering
6. Institute of Physical Chemistry
7. Development Center for New Materials Engineering & Technology in Universities of Guangdong
8. Lingnan Normal University
9. Zhanjiang 524048
10. State Key Laboratory of Resources and Environmental Information System
11. Institute of Geographic Sciences and Natural Resources Research
12. Chinese Academy of Sciences
13. Beijing 100101