title: Airborne radionuclides in mosses collected at different latitudes.
abstract: Terrestrial mosses are a promising medium for investigation and monitoring of airborne radionuclide depositions due to their widespread occurrence, ease of sampling, and the possibility of high-resolution gamma spectrometry measurements without preparatory chemical treatment of samples. The overall objective of the present study was to compare (7)Be, (210)Pb and (137)Cs activity concentrations (in Bq/kg) in moss samples collected at two different climate zones: the south of Thailand (7 °N) and in Serbia (∼45 °N) in order to examine deposition of airborne radionuclide in these distant areas. Significant difference of the (210)Pb content (almost a factor of 2) in mosses was observed. The mean value of (7)Be activity in samples from Serbia was almost 40% higher than activity of those collected in Thailand. Level of (137)Cs in Thailand mosses was below the detection limit. It was shown that air transport of water droplets in the area of waterfalls and strong turbulence can deposit U and Th daughter nuclei.
authors: University Novi Sad, Trg Dositeja Obradovica, Novi Sad, Serbia. krmar@df.uns.ac.rs
authors: M
authors: M
authors: Krmar
authors: K
authors: K
authors: Wattanavatee
authors: D
authors: D
authors: Radnović
authors: J
authors: J
authors: Slivka
authors: T
authors: T
authors: Bhongsuwan
authors: M V
authors: MV
authors: Frontasyeva
authors: S S
authors: SS
authors: Pavlov
mesh_terms: D044002:Bryophyta / Q000737:chemistry*; D011834:Radiation Monitoring / Q000379:methods*; D011868:Radioisotopes / Q000032:analysis*; D055771:Serbia; D013785:Thailand
chemical_list: D011868:Radioisotopes