1. Department of Radiation Chemistry, Institute of Radiation Emergency Medicine, Hirosaki University
2. Atmosphere and Ocean Research Institute, The Tokyo University
3. Environmental Engineering Department, The General Enviromental Technos Co., Ltd.
4. Pan-Okhotsuk Research Centor, Institute of Low Temperature Science, Hokkaido University
5. College of Humanities and Sciences, Nihon University
6. Center for Water Environment Studies, Ibaraki University