Ecological half-life of Cs-137 in mosses and lichens in the Ordu province, Turkey by Cevik and Celik

ÇEVİK U., CELIK N.

JOURNAL OF ENVIRONMENTAL RADIOACTIVITY, vol.100, no.1, pp.23-28, 2009 (SCI-Expanded) identifier identifier identifier

  • Publication Type: Article / Article
  • Volume: 100 Issue: 1
  • Publication Date: 2009
  • Doi Number: 10.1016/j.jenvrad.2008.09.010
  • Journal Name: JOURNAL OF ENVIRONMENTAL RADIOACTIVITY
  • Journal Indexes: Science Citation Index Expanded (SCI-EXPANDED), Scopus
  • Page Numbers: pp.23-28
  • Keywords: Lichen, Moss, Radioactivity, Ecological half-life, Ordu, RADIONUCLIDES, (CS)-C-137, PB-210, LIVES, PLANT, AREA, SOIL, BAGS
  • Karadeniz Technical University Affiliated: Yes

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 (CS)-C-137 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 (CS)-C-137 was still eminent in the area studied. Moreover, K-40 activity concentrations and K element concentrations were measured and their relationships were discussed. (c) 2009 Elsevier Ltd. All rights reserved.