1. Research Center for Environmental Pollution Prevention and Control Technology, Graduate Institute of Environmental Engineering, National Taiwan University, Taipei 106, Taiwan, Republic of China
2. Research Center for Environmental Pollution Prevention and Control Technology, Graduate Institute of Environmental Engineering, National Taiwan University, 71 Chou-Shan Road, Taipei 106, Taiwan, R.O.C. Phone: +886-2-2362-5373; Fax: +886-2-2392-8830; E-mail: sllo@ccms.ntu.edu.tw
3. School of Forestry and Resource Conservation, National Taiwan University, Taipei 106, Taiwan, Republic of China