Published Online: 15 JUN 2010
Copyright © 2006 John Wiley & Sons, Ltd
Encyclopedia of Inorganic Chemistry
How to Cite
Hu, Q. and Moran, J. E. 2010. Iodine: Radionuclides. Encyclopedia of Inorganic Chemistry. .
- Published Online: 15 JUN 2010
This article provides a review of iodine with regard to the basic chemistry, occurrence, speciation, separation, analysis, fate, and transport. Biogeochemical cycling of iodine in the environment is complex because iodine occurs in multiple oxidation states (ranging from −1 to +7), and inorganic and organic species may be hydrophilic, atmophilic, and biophilic. Organically bound iodine can be a significant fraction of total iodine in the atmosphere, biosphere, hydrosphere, and lithosphere. Nuclear-fuel reprocessing facilities constitute the major source (>90%) of 129I released to the environment. It has been recognized that 129I is a very important dose contributor in risk assessment because of its tendency to concentrate in the human thyroid gland, long half-life, and presumably high mobility. Speciation, input concentration, and residence time effects will influence the biogeochemical cycling of anthropogenic 129I deposited on surface soils.
- stable iodine;
- oxidation state;
- organic iodine;
- biogeochemical cycling