【作者】 李建国； 韩宝华； 黄鹏； 耿莉； 马炳辉； 韩学垒； 尚红莲；

【Author】 LI Jian-guo~1,HAN Bao-hua~1,HUANG Peng~2,GENG Li~2, MA Bing-hui~1,HANG Xue-lei~1,SHANG Hong-lian~2 (1.China Institute for Radiation Protection,Taiyuan 030006,Shanxi Prov.,China; 2.Sichuan Environmental Protection Engineering Co.Ltd.CNNC,Chengdu 610006,Sichuan Prov.,China)

【机构】 中国辐射防护研究院； 中核四川环保工程有限责任公司；

【摘要】 本文针对我国南方某厂址外环境,选取中华蟾蜍（Bufo gargarizans）、鸭子（旱鸭和水鸭）和马尾松（Pinus masso-niana Lamb）作为参考生物,通过对上述生物的放射生态学调查,获得了相关的生物学特征参数;通过对生物及其配套环境介质样品的⁹⁰Sr和¹³⁷Cs放射性测量,获得了参考生物的核素浓度比CR值,采用欧共ERICA程序进行了剂量率估算。结果表明,⁹⁰Sr和¹³⁷Cs对蟾蜍的剂量率分别为1.69E-03μGy·h¹和6.96E-03μGy·h¹,总剂量率为8.65E-03μGy·h¹;⁹⁰Sr和¹³⁷Cs对水鸭的剂量率分别为1.56E-04μGy·h¹和2.68E 04EμGy·h¹,总剂量率为4.24E-04μGy·h¹;⁹⁰Sr和¹³⁷Cs对旱鸭的剂量率分别为2.04E-04μGy·h¹和2.29E-04EμGy·h¹,总剂量率为4.33E-04μGy·h¹,均远低于IAEA推荐的陆地动物剂量率筛选水平40μGy·h¹;松树不同部分对⁹⁰Sr和¹³⁷Cs的剂量率由高到低依次为:松针>松枝>树干,其中松针对⁹⁰Sr和¹³⁷Cs的剂量率分别为6.59E-04μGy·h¹和7.22E-04μGy·h¹,总剂量率为1.38E-03μGy·h¹,远低于IAEA推荐的陆地植物剂量率筛选水平400μGy·h¹。更多还原

【Abstract】 In the external enviromment of a site located in the South China,the Chinese toad（Bufo gargarizans）,dry duck and teal,and pine tree（Pinus massoniana Lamb）are studied as reference organisms.Through investigation,the parameters of biological characteristics of the species are provided.The radionuclide concentration ratio CR（defined as the ratio of activity concentration in biota whole body（Bq?kg¹ fresh weight）and activity concentration of soil （Bq?kg¹ dry weight）or activity concentration of filtered water（Bq?L¹））are provided by collecting biological and environmental media samples and ⁹⁰Sr and ¹³⁷Cs activity analysis.By the ERICA tool of EC,the dose rates of the species for ⁹⁰Sr and ¹³⁷Cs are estimated.The results show that the dose rates of ⁹⁰Sr and ¹³⁷Cs for Chinese toad are 1.69E- 03μGy?h¹ and 6.96E-03μGy?h¹ respectively,the total dose rate is 8.65E-03μGy?h¹.The dose rates of ⁹⁰Sr and ¹³⁷Cs for teal are 1.56E-04μGy?h¹ and 2.68E-04EμGy?h¹,the total dose rate is 4.24E-04μGy?h¹.The dose rates of ⁹⁰Sr and ¹³⁷Cs for dry duck are 2.04E-04μGy?h¹ and 2.29E-04EμGy?h¹,the total dose rate is 4.33E-04μGy?h¹.The total dose rates of the referenfe animals are well below the IAEA recommended dose limit for terrestrial animals（40μGy?h¹）.The order of dose rates of ⁹⁰Sr and ¹³⁷Cs for pine,from high to low are:pine needles>pine branches>pine trunk.The total dose rate of pine needles is 1.38E-03μGy?h¹,which is well below the IAEA recommended dose limit for terrestrial plants （400μGy?h¹）.更多还原