Iodine and plutonium association with natural organic matter: A review of recent advances

In the laboratory and the field, plutonium strongly associates with NOM, when present, and is strongly chelated by specific moieties such as hydroxamate siderophores and other N-containing compounds. As a consequence, its mobility is controlled by the transport behavior of the anionic organic forms rather than the much more strongly sorbing cationic form of Pu(IV). NOM, even at trace levels, can play a significant role in controlling the fate and transport of radionuclides.