Correspondence should be addressed to Jin-Ping CHENG, 800 Dongchuan Road, Shanghai 200240, China. Tel: 86-21-54745262; 86-21-13611955242; 86-21-28103323. Fax: 86-21-54740825. E-mail: jpcheng@sjtu.edu.cn; jp73cheng@sina.com.cn .Jin-Ping CHENG, male, born in 1973, Ph. D. and associate professor, majoring in environmental chemistry and ecotoxicology.