1. National Research Council Associate,
National Exposure Research Laboratory, Ecosystems Research Division, United States Environmental Protection Agency, Athens,
Georgia 30605, United States
2. Department of Environmental
Engineering, National Cheng Kung University, Tainan City 701, Taiwan
3. Region 4, Science and Ecosystem
Support Division, United States Environmental Protection Agency, Athens, Georgia 30605, United States
4. National Exposure Research Laboratory,
Ecosystems Research Division, United States Environmental Protection Agency, Athens, Georgia 30605, United States