Presentation Information

2:30 PM - 2:45 PM JST(5:30 AM - 5:45 AM UTC)

[24p-12B-5]Study on natural iodine isotope system 2

〇Hiroyuki Matsuzaki¹, Miwako Toya¹, Yuanzhi Qi¹, Takeyasu Yamagata¹, Kazuho Horiuchi² (1.MALT Tokyo Univ., 2.Hirosaki Univ.)

Keywords:

Accelerator Mass Spectrometry,Iodine 129,Antarctic ice

In modern world, the iodine isotope system (¹²⁹I/¹²⁷I) is controlled mainly by the anthropogenic ¹²⁹I. To apply iodine isotope system to dating and index of paleo intensity of comic ray, the impact of anthropogenic ¹²⁹I to the iodine isotope system must be evaluated exactly. For this purpose, we analyzed iodine isotopes in the surface snow ice samples collected from Antarctica.

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