10:30 AM - 10:45 AM
*Mengnjo jude WIRMVEM1, Takeshi OHBA1, Tasin godlove BAFON2, Brice tchakam KAMTCHUENG3, Eldred tunde TAYLOR4, Asobo nkengmatia elvis ASAAH5, Engome regina WOTANY6, Seigo OOKI1, Wilson yetoh FANTONG7, Samuel ndonwi AYONGHE6 (1.Department of Chemistry, School of Science, Tokai University, 2.Compagnie Miniere Du Cameroun, 3.Graduate School of Science and Engineering for Education, University of Toyama, 4.IEMQC, Njala University, 5.Department of Earth & Planetary Sciences, Tokyo Institute of Technology, 6.Department of Environmental Science, Faculty Science, University of Buea, 7.Institute of Mining and Geological Research, Cameroon)