title: Kinetics of radiocesium sorption in lake sediments.
abstract: The sorption of radiocesium (137Cs) in sediments sampled from Lake Pamvotis of Ioannina was studied in a laboratory simulation. In a series of experiments, the kinetics of 137Cs sorption and 137Cs distribution profiles in sediment cores were investigated. The results have shown that a significant percentage of 137Cs (35%) is adsorbed in the sediments during the first 3 d, at a rate of 0.41 +/- 0.05 d-1. The rest of 137Cs is adsorbed with the slower rate of 0.024 +/- 0.004 d-1. 137Cs rapidly reaches (< 5 d) a depth that does not exceed 3.5 cm. The sorption of 137Cs was found to follow Freundlich's empirical law, which describes the adsorption of most substances in solution to solids.
authors.affiliation: Nuclear Physics Laboratory, University of Ioannina, Greece.
authors.forename: I L
authors.initials: IL
authors.lastname: Kirikopoulos
authors.forename: K G
authors.initials: KG
authors.lastname: Ioannides
authors.forename: D T
authors.initials: DT
authors.lastname: Karamanis
authors.forename: K C
authors.initials: KC
authors.lastname: Stamoulis
authors.forename: E M
authors.initials: EM
authors.lastname: Kondoura
authors.forename: A S
authors.initials: AS
authors.lastname: Mantzios
mesh_terms: D000327:Adsorption; D002588:Cesium Radioisotopes / Q000493:pharmacokinetics*; D006115:Greece; D014875:Water Pollutants, Radioactive / Q000493:pharmacokinetics*
chemical_list: D002588:Cesium Radioisotopes; D014875:Water Pollutants, Radioactive