1. Key
Laboratory of Pollution Processes and Environmental Criteria, Ministry
of Education, Tianjin Key Laboratory of Environmental Remediation
and Pollution Control, College of Environmental Science and Engineering, Nankai University, Tianjin, P.R. China
2. Division
of Analytical and Environmental Toxicology, Department of Laboratory
Medicine and Pathology, University of Alberta, Edmonton, Alberta Canada T6G 2G3;
3. South China Institute of Environmental Science, Ministry of Environmental Protection, Guangzhou, P.R. China