Sorption of Co, Cs, Sr and I onto argillaceous rock as studied by radiotracers</p> </p>
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- 作者：P. Mell ; J. Megyeri ; L. Riess ; Z. Máthé ; J. Csicsák and K. Lázár
- 刊名：Journal of Radioanalytical and Nuclear Chemistry
- 出版年：2006
- 出版时间：May 2006
- 年：2006
- 卷：268
- 期：2
- 页码：405-410
- 全文大小：156 KB
- 刊物类别：Chemistry and Materials Science
- 刊物主题：Chemistry
Nuclear Chemistry
Physical Chemistry
Nuclear Physics, Heavy Ions and Hadrons
Diagnostic Radiology
Inorganic Chemistry - 出版者：Akad茅miai Kiad贸, co-published with Springer Science+Business Media B.V., Formerly Kluwer Academic
- ISSN：1588-2780
文摘
Sorption of60Co,85Sr, 137Cs and125I have been studied on samples originated from Boda (siltstone-) claystone formation (BCF) (Hungary). The distribution of Kdvalues have been determined in static batch experiments using natural groundwater. The order of sorption of isotopes was Co>Cs>Sr>I, where iodine exhibits sorption properties in a modest extent. The sorption isotherm was determined for Cs from measurements carried out in 10-5-10-1M initial concentration range. The isotherm can be described with non-linear Freundlich approximation in the range of</o:p></p> 10-7-10-4M equilibrium concentration. At concentrations >10-2M the isotherm achieves saturation. Hence, it is suggested that sorption of Cs on BCF is dominated by cation-exchange reactions on the illite mineral component. In the case of Co and Sr, precipitation reactions occurred during the experiments performed with carrier-containing solutions. This can be attributed to the low values of solubility product constants of SrCO3, SrSO4and Co(OH)2, formed from anions present in the natural groundwater.</p> </p>