Estimating the exposure of small mammals at three sites within the Chernobyl exclusion zone - a test application of the ERICA Tool
Estimating the exposure of small mammals at three sites within the Chernobyl exclusion zone - a test application of the ERICA Tool
复制标题
DOI：
10.1016/j.jenvrad.2008.03.002
复制
发表时间：
2008-09-01
影响因子：
2.3
通讯作者：
Copplestone, D.
中科院分区：
文献类型：
--
作者：
Beresford, N. A.;Gaschak, S.;Copplestone, D.
开发任何建模工具的一个重要步骤是验证其预测。本文介绍了在切尔诺贝利禁区内进行的一项研究，以获取数据，进行独立的测试的预测埃里卡工具，这是专为用于评估对环境的辐射风险。2005年7月初至8月中旬，小型哺乳动物多次被困在三个林地。将热释光剂量计安装在项圈上，安装在黄颈姬鼠、灰腹鼠和田鼠身上。以提供外部剂量率的测量。共回收85个TLD。对回收TLD的所有动物进行活体监测，以确定Sr-90和（CS）-C-137的全身活性浓度。还分析了有限数量的动物以确定Pu-239.240活性浓度。将TLD记录的全身活动浓度和剂量率的测量值与埃里卡工具的预测值进行比较。预测的Sr-90和（CS）-C-137平均活性浓度在观测数据平均值的一个数量级内。虽然在测量和预测之间的一致性方面，不同地点之间存在一些差异，但这与从地点土壤类型差异中预期的结果一致。考虑到开展此类研究的不确定性，在辐射剂量计结果和预测的外照射剂量率之间观察到的一致性使埃里卡工具的预测具有可信度。(C)2008爱思唯尔有限公司保留所有权利。
An essential step in the development of any modelling tool is the validation of its predictions. This paper describes a study conducted within the Chernobyl exclusion zone to acquire data to conduct an independent test of the predictions of the ERICA Tool which is designed for use in assessments of radiological risk to the environment. Small mammals were repeatedly trapped at three woodland sites between early July and mid-August 2005. Thermoluminescent dosimeters mounted on collars were fitted to Apodemus flavicollis, Clethrionomys glareolus and Microtus spp. to provide measurements of external dose rate. A total of 85 TLDs were recovered. All animals from which TLDs were recovered were live-monitored to determine Sr-90 and (CS)-C-137 whole-body activity concentrations. A limited number of animals were also analysed to determine Pu-239.240 activity concentrations. Measurements of whole-body activity concentrations and dose rates recorded by the TLDs were compared to predictions of the ERICA Tool. The predicted Sr-90 and (CS)-C-137 mean activity concentrations were within an order of magnitude of the observed data means. Whilst there was some variation between sites in the agreement between measurements and predictions this was consistent with what would be expected from the differences in soil types at the sites. Given the uncertainties of conducting a study such as this, the agreement observed between the TLD results and the predicted external dose rates gives confidence to the predictions of the ERICA Tool. (C) 2008 Elsevier Ltd. All rights reserved.