演題概要

ポスター発表

第2日 5月19日(木)  ポスター会場(月光)

海洋生物と海水の129I/127I比

(1東大MALT2東大海洋研)
o楠野葉瑠香1松崎浩之1永田俊2川本万里奈1徳山裕憲1

The 129I/127I ratio in marine biological samples and seawater samples collected at the Western Pacific Ocean was measured. There was one order of difference of 129I/127I ratio between the biology and seawater. General isotopic fractionation cannot explain such a large difference. Biology may have preference of iodine chemical forms when they assimilate iodine. We tried to measure the 129I/127I ratio of two major iodine chemical forms (IO3- and I-) in seawater samples and discuss why such the difference of 129I/127I ratio was found between biology and seawater.