Bo-Shian Wang¹, Haojia Abby Ren², Tsai-Luen Yu³, Jeng-Ping Chen¹, Chuan-Chou Shen⁴, Ming-Yun Liu¹, Feng-Yu Wang¹, Horng-Sheng Mii⁵, Chiung-Jung Tseng¹, Chuan-Shen Liu¹ and Ren-Yi Cai Li⁶, (1)Taiwan Ocean Research Institute, National Applied Laboratories, Kaohsiung, Taiwan, (2)Department of Geoscience, National Taiwan University, Taipei, Taiwan, (3)National Taiwan University, Research Center for Future Earth, Taipei, Taiwan, (4)National Taiwan University, High-Precision Mass Spectrometry and Environment Change Laboratory (HISPEC), Taipei, Taiwan, (5)National Taiwan Normal Univ., Taipei, Taiwan, (6)National Taiwan University, Department of Geosciences, Taipei, Taiwan