1. School
of Environmental Science and Engineering, Sun Yat-sen University, Guangzhou 510275, P. R. China
2. Guangdong
Provincial
Key Laboratory of Environmental Pollution Control and Remediation
Technology, Guangzhou 510275, P. R. China
3. Department
of Chemistry, University of California-Riverside, Riverside, California 92521, United States
4. School of Environmental
Science and Engineering, Guangzhou University, Guangzhou 510006, P. R. China