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Journal Articles

Iodine-129 measurements in soil samples from Dolon village near the Semipalatinsk Nuclear Test Site

Endo, Satoru*; Tomita, Jumpei*; Tanaka, Kenichi*; Yamamoto, Masayoshi*; Fukutani, Satoshi*; Imanaka, Tetsuji*; Sakaguchi, Aya*; Amano, Hikaru; Kawamura, Hidehisa*; Kawamura, Hisao*; et al.

Radiation and Environmental Biophysics, 47(3), p.359 - 365, 2008/07

https://doi.org/10.1007/s00411-008-0162-3
 Times Cited Count：5 Percentile：21.04(Biology)

Dolon village located about 60 km from the border of the Semipalatinsk Nuclear Test Site is known to be heavily contaminated by the first USSR atomic bomb test in August 1949. Soil samples around Dolon were taken in October 2005 in an attempt to evaluate internal thyroid dose arising from incorporation of radioiodine isotopes (mainly $$^{131}$$I). Iodine-129 in soil was measured by using the technique of Accelerator Mass Spectrometry. From the relationship between $$^{129}$$I and $$^{137}$$Cs (corrected for background and decay from 1949 to 2005) accumulated levels, the background level of $$^{129}$$I and the $$^{129}$$I/$$^{137}$$Cs ratio around Dolon were estimated to be (6.4 $$pm$$0.4) $$times$$ 10$$^{13}$$ atoms m$$^{-2}$$ and 0.25 $$pm$$0.16, respectively. This $$^{129}$$I/$$^{137}$$Cs ratio is almost similar to the fission yield ratio for $$^{239}$$Pu fast fission (0.24).

Journal Articles

Origin and chemical speciation of anthropogenic Iodine-129

Shima, Shigeki*; Gasa, Shinichi*; Amano, Hikaru; Nagao, Seiya*; Yamamoto, Masayoshi*; Momoshima, Noriyuki*; Furukawa, Masahide*; Kimura, Hideki*; Kawamura, Hisao*

JAEA-Conf 2008-003, p.28 - 31, 2008/04

https://jopss.jaea.go.jp/pdfdata/JAEA-Conf-2008-003.pdf

Concentrations of $$^{129}$$I in surface seawater around Japan were approximately 2$$times$$10$$^{7}$$atoms/L in literatures. However, the atomic ratio of iodine to cesium was ten times as high as that of the global fallout. The origin of $$^{129}$$I in the water columns seems to be difficult to be explained by only the global fallout. Discharge from European plants was one of the possible origins of iodine from the standpoint of air mass trajectory analysis. Concentration of $$^{129}$$I in rain water was 10 times higher than that in surface seawater. Anthropogenic inorganic iodine in surface seawater predominantly dissolves as an iodide ion (I$$^{-}$$).

Journal Articles

Determination of $$^{129}$$I in seawater by accelerator mass spectrometry with solvent extraction method

Gasa, Shinichi*; Sawafuji, Natsuko*; Kabuto, Shoji; Kinoshita, Naoki; Amano, Hikaru; Kawamura, Hisao*

Radioisotopes, 56(4), p.155 - 162, 2007/04

https://doi.org/10.3769/radioisotopes.56.155

no abstracts in English

Journal Articles

Fallout Radioactivity in Soil and Food Samples in the Uikraine: Measurements of Iodine, Plutonium, Cesium, and Strontium Isotopes

Shinohara, Kunihiko; Okajima, Toshiyuki*; Kawamura, Hisao*; *; Kozlen, M. T.*

Health Physics, 67(2), p.187 - 191, 1994/00

https://doi.org/10.1097/00004032-199408000-00012
 Times Cited Count：33 Percentile：98.04(Environmental Sciences)

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