4:15 PM - 4:30 PM
*Xiaoyang Li1, Atsuko Sugimoto1,2, Akihiro Ueta1,3 (1.Graduate School of Environmental Science, Hokkaido University, 2.Faculty of Environmental Earth Science, Hokkaido University, 3.present address: Laboratory for Measurement & Analysis, The General Environmental Technos CO., LTD)