Airborne radionuclides in mosses collected at different latitudes(Article)
- aFaculty of Science, University Novi Sad, Trg Dositeja Obradovica 4, 21000 Novi Sad, Serbia
- bDepartment of Physics, Faculty of Science, Prince of Songkla University, Thailand
- cFrank Laboratory of Neutron Physics, Joint Institute for Nuclear Research, Dubna, Moscow Region, Russian Federation
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 7Be, 210Pb and 137Cs 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 210Pb content (almost a factor of 2) in mosses was observed. The mean value of 7Be activity in samples from Serbia was almost 40% higher than activity of those collected in Thailand. Level of 137Cs 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. © 2011 Elsevier Ltd.
Indexed keywords
| Engineering uncontrolled terms | Activity concentrationAir transportAtmospheric depositionsBiomonitorsChemical treatmentsDetection limitsGamma spectroscopyHigh-resolution gamma spectrometryMean valuesMoss samplesStrong turbulenceThailandWater droplets |
|---|---|
| Engineering controlled terms: | CesiumLeadMeteorological problemsUltraviolet spectroscopy |
| Engineering main heading: | Radioisotopes |
| EMTREE drug terms: | beryllium 7cesium 137lead 210radioisotopewater |
| GEOBASE Subject Index: | chemical analysisclimate changeconcentration (composition)latitudemossradionuclidesamplingspatial resolutionterrestrial ecosystemturbulencewaterfall |
| EMTREE medical terms: | articleclimateconcentration (parameters)latitudelimit of detectionmossnonhumanSerbiaThailand |
| MeSH: | BryophytaRadiation MonitoringRadioisotopesSerbiaThailand |
| Regional Index: | SerbiaThailand |
| Species Index: | Bryophyta |
Chemicals and CAS Registry Numbers:
beryllium 7, 13966-02-4; cesium 137, 10045-97-3; lead 210, 14255-04-0; water, 7732-18-5;
Radioisotopes
Funding details
| Funding sponsor | Funding number | Acronym |
|---|---|---|
| Prince of Songkla University | PSU | |
| Ministarstvo Prosvete, Nauke i Tehnološkog Razvoja | MPNTR |
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1
This paper was realized as a part of the project “Studying climate change and its influence on the environment: impacts, adaptation and mitigation” (43007) financed by the Ministry of Education and Science of the Republic of Serbia within the framework of integrated and interdisciplinary research for the period 2011-2014.
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2
The second author (K. Wattanavatee) would like to express his gratitude to the graduate school, Prince of Songkla University for funding of this work on the Thailand side.
- ISSN: 0265931X
- CODEN: JERAE
- Source Type: Journal
- Original language: English
- DOI: 10.1016/j.jenvrad.2011.08.009
- PubMed ID: 21880403
- Document Type: Article
Krmar, M.; Faculty of Science, University Novi Sad, Trg Dositeja Obradovica 4, Serbia;
© Copyright 2013 Elsevier B.V., All rights reserved.
© MEDLINE® is the source for the MeSH terms of this document.
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