Studies with natural and anthropogenic iodine isotopes: iodine distribution and cycling in the global environment |
| |
Authors: | Muramatsu Yasuyuki Yoshida Satoshi Fehn Udo Amachi Seigo Ohmomo Yoichiro |
| |
Affiliation: | National Institute of Radiological Sciences, Anagawa 4-9-1, Inage-ku, Chiba, 263-8555 Japan. y_murama@nirs.go.jp |
| |
Abstract: | Iodine is an important trace element in geological and biological processes. We summarize here recent results and new data of experiments and observations carried out to improve the understanding of concentration levels and behavior of natural and anthropogenic iodine nuclides in the global environment. The distribution of stable iodine in the Earth's crust was estimated using concentration data in a suite of representative samples and the influence of subduction on the marine iodine cycle was investigated using (129)I systematics on iodine-rich brines from Japan. The importance of microorganisms for the natural iodine cycle is shown in recent studies of iodine sorption on soil and of iodine volatilization from terrestrial and marine environments. Levels of anthropogenic (129)I were measured in samples collected around a spent fuel reprocessing plant in Japan. |
| |
Keywords: | |
本文献已被 PubMed 等数据库收录! |
|