Determination of iodine mobility in the soil vadose zone using long-term column experiments

Autor:	Beate Riebe, Anica Weller, Fabian Köhler, Clemens Walther
Rok vydání:	2019
Předmět:	Capillary action Health Toxicology and Mutagenesis Public Health Environmental and Occupational Health chemistry.chemical_element Contamination 010403 inorganic & nuclear chemistry Iodine 01 natural sciences Pollution 0104 chemical sciences Analytical Chemistry Nuclear Energy and Engineering chemistry Environmental chemistry TRACER Soil water Dissolved organic carbon Vadose zone Environmental science Soil horizon Radiology Nuclear Medicine and imaging Spectroscopy
Zdroj:	Journal of Radioanalytical and Nuclear Chemistry. 322:1755-1760
ISSN:	1588-2780 0236-5731
Popis:	129I is emitted continuously in large amounts by reprocessing plants in La Hague and Sellafield. For determination of mobility in soil, we provide results of column experiments with undisturbed natural soils. Directly after short-term (28 days) contact with water from the bottom, iodine shows high upwards mobility only due to capillary forces. Furthermore, desiccation of the contaminated tracer reservoir led to an even stronger migration effect, which indicates remobilization of iodine from the drying soil layers. Chemical speciation proves difficult, as either gaseous iodine or organically bound iodine attached to dissolved organic matter are possible for the upward migration processes.
Databáze:	OpenAIRE
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