title: Ecological half-life of 137Cs in mosses and lichens in the Ordu province, Turkey by Cevik and Celik.
abstract: Twenty-one years after the Chernobyl accident, lichen and moss samples were collected from the Ordu province, which was already chosen for a related study some years ago. It was observed that 137Cs activity concentration ranged from 31 to 469 Bq kg(-1) in the moss and from 132 to 1508 Bq kg(-1) in the lichen samples. The decrease of the activity concentrations in the present measurements (2007) relative to those in 1997 (over a period of 10 y) indicated ecological half-lives between 1.8 and 10.4 y for the moss and between 2.1 and 13.7 y for the lichen samples. It was observed that 137Cs was still eminent in the area studied. Moreover, 40K activity concentrations and K element concentrations were measured and their relationships were discussed.
authors.affiliation: Department of Physics, Karadeniz Technical University, 61080 Trabzon, Turkey.
authors.forename: Ugur
authors.initials: U
authors.lastname: Cevik
authors.forename: Necati
authors.initials: N
authors.lastname: Celik
mesh_terms: D044002:Bryophyta / Q000737:chemistry / Q000378:metabolism*; D002586:Cesium / Q000737:chemistry* / Q000378:metabolism*; D002587:Cesium Isotopes / Q000737:chemistry / Q000378:metabolism; D006207:Half-Life; D008011:Lichens / Q000737:chemistry / Q000378:metabolism*; D012990:Soil Pollutants, Radioactive / Q000737:chemistry* / Q000378:metabolism; D014421:Turkey
chemical_list: D002587:Cesium Isotopes; D012990:Soil Pollutants, Radioactive; D002586:Cesium