Distribution and transport processes of iodine-129 in seabed sediment off Fukushima

Otosaka, Shigeyoshi ; Suzuki, Takashi ; Nakanishi, Takahiro ; Kuwabara, Jun ; Sato, Yuhi

From August to November 2011, seabed sediments were collected from off Fukushima and Ibaraki prefectures and $^{129}$ I concentration in the sediments was measured with accelerator mass spectrometry. $^{129}$ I concentration in the surface sediment (0-1 cm layer) ranged between 0.045 and 0.48 mBq/kg-dry, and was several times higher than that in 2009. The activity ratio of $^{129}$ I, considered to originates from the accident of Fukushima Daiichi NPP, over $^{137}$ Cs in seabed sediment was higher than those in surface seawater. These results indicate that radioiodine was selectively adsorbed onto particles in the surface seawater or in the sediment-water interface, and accumulated in the seabed sediments.

Language	:	Japanese
Journal	:
Volume	:
Number	:
Pages	:
Publication Year/Month	:
Meeting title	:	2013年度日本海洋学会秋季大会
Held date	:	2013/09
Location (city)	:	札幌
Location (country)	:	日本
Patent information	:
PDF	:
Paper URL	:
DOI for research data	:
Keywords	:	福島第一原子力発電所事故; Fukushima Daiichi Nuclear Power Station Accident
Research Facility	:	AMS(加速器質量分析装置)
Press Release	:
Article of JAEA R&D Review	:
Cooperating Institute	:

Accesses	:	- Accesses
Web of Science® Times Cited Count	:	Times Cited Count： If you would like to get the latest times cited, please access the Web of Science®. http://www.webofknowledge.com/wos
InCites™	:
Altmetrics	:

Registration No. : BB20131065
JAEA Abstracts No. :
Paper Submission No. :

[CLARIVATE ANALYTICS], [WEB OF SCIENCE], [HIGHLY CITED PAPER & CUP LOGO] and [HOT PAPER & FIRE LOGO] are trademarks of Clarivate Analytics, and/or its affiliated company or companies, and used herein by permission and/or license.