11:15 AM - 11:30 AM
*SUSHMITA HOSSAIN1,2, Asma Akter4, Shirin Akter2, Yeasmin Nahar Jolly2, Bilkis Ara Begum2, Takashi Ishiyama3, Shoichi Hachinohe3, Aziz Hasan4, Kazi Matin Ahmed4 (1.Graduate school of Science and Engineering, Saitama University, Japan, 2.Chemistry Division,Atomic Energy Centre,Bangladesh Atomic Energy Commission,Bangladesh , 3. Research Institute,Center for Environmental Science in Saitama,Japan, 4.Department of Geology,University of Dhaka,Bangladesh)