1. Special Graduate Program on River Basin Environmental Science; University of Yamanashi; 4-4-37, Takeda, Kofu Yamanashi Japan
2. Interdisciplinary Centre for River Basin Environment; University of Yamanashi; 4-4-37, Takeda, Kofu Yamanashi Japan
3. Faculty of Chemistry; Vietnam National University - University of Science; 19 Le Thanh Tong, Hoan Kiem Hanoi Vietnam