Abstract

Table of contents

Plenary Lectures: Award Lecture
Oral Sessions Day1, Day2, Day3: Poster Presentations Day1, Day2, Day3
Workshops: Panel Discussion
Luncheon Seminar Day1, Day2, Day3: Timetable

Poster Presentations

Day 2: Thursday, May 19　　Poster Room（Gekko）

2P-22　　PDF

The ¹²⁹I/¹²⁷I ratio in marine biology and seawater

(¹MALT, ²Univ.Tokyo)
^oHaruka Kusuno¹, Hiroyuki Matsuzaki¹, Toshi Nagata², Marina Kawamoto¹, Hironori Tokuyama¹

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.