Background exposure rates of terrestrial wildlife in England and Wales

被引:47
作者
Beresford, N. A. [1 ]
Barnett, C. L. [1 ]
Jones, D. G. [2 ]
Wood, M. D. [4 ]
Appleton, J. D. [2 ]
Breward, N. [2 ]
Copplestone, D. [3 ]
机构
[1] Lancaster Environm Ctr, Ctr Ecol Hydrol, CEH Lancaster, Lancaster LA1 4AP, England
[2] British Geol Soc, Nottingham NG12 5GG, England
[3] Environm Agcy, Warrington WA4 1HG, Cheshire, England
[4] Univ Liverpool, Inst Sustainable Water Integrated Management & Ec, Liverpool L69 3GP, Merseyside, England
基金
英国自然环境研究理事会;
关键词
terrestrial biota; ERICA; K-40; U-238; series; Th-232; reference animals and plants;
D O I
10.1016/j.jenvrad.2008.03.003
中图分类号
X [环境科学、安全科学];
学科分类号
08 ; 0830 ;
摘要
It has been suggested that, when assessing radiation impacts on non-human biota, estimated dose rates due to anthropogenically released radionuclides should be put in context by comparison to dose rates from natural background radiation. In order to make these comparisons, we need data on the activity concentrations of naturally occurring radionuclides in environmental media and organisms of interest. This paper presents the results of a study to determine the exposure of terrestrial organisms in England and Wales to naturally occurring radionuclides, specifically K-40, U-238 series and Th-232 series radionuclides. Whole-body activity concentrations for the reference animals and plants (RAPs) as proposed by the ICRP have been collated from literature review, data archives and a targeted sampling campaign. Data specifically for the proposed RAP are sparse. Soil activity concentrations have been derived from an extensive geochemical survey of the UK. Unweighted and weighted absorbed dose rates were estimated using the ERICA Tool. Mean total weighted whole-body absorbed dose rates estimated for the selected terrestrial organisms was in the range 6.9 x 10(-2) to 6.1 x 10(-1) mu Gy h(-1). (C) 2008 Elsevier Ltd. All rights reserved.
引用
收藏
页码:1430 / 1439
页数:10
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