摘要
本文收集了￣（９０）Ｓｒ、￣（１３７）Ｃｓ、天然铀、￣（２２６）Ｒａ和￣（２３９）Ｐｕ在各种农、畜产品及其生长土壤（或放牧牧草）中含量的数据，配对计算了放射性核素在土壤－农产品和牧草－畜产品中的转移系数。根据转移系数数据的概率分布特征，按南方湿润地区和北方干旱地区分别统计，给出了这５种核素在７种农产品和２种畜产品中转移系数的代表值及９５％范围。此代表值可考虑作为无特定场址数据情况下利用计算模式进行环境污染预测和受照剂量评估时食物链转移系数的代用值，９５％范围可作为判定单个转移系数值可靠性的参考依据。
Aim of study was to provide values of transfer parameter of ￣(90)Sr,￣(137)Cs ,NaturalU,￣(226)Ra and ￣(239)Pu in terrestrial foodchains, more applicable for Chinese socio-natural condi-tions. Data of radionuclides contents in agricultural crops and in associated soils ,in sheep tis-sues and in associated grasses were collected in couples. The transfer coeffecients in terrestri-al foodchains(soil-crops, grasses-sheep tissues) were calculated. On basis of Statistical anal-ysis,the representative values and 95%ranges of transfer coeffecient for 5 radionuclides in 7kind of agricultural products for southern moist areas and north dry areas were given.Regress analysis showed that relation between the transfer coeffecients and the radionuclidecontents in their associated soils presente a regative correlation,if could be described with acouation:Y=aX￣(-b).
出处
《辐射防护》
CAS
CSCD
北大核心
1995年第4期241-252,共12页
Radiation Protection
关键词
土壤
转移系数
食物链
放射性同位素
锶90
Radionuclide,Agricultural Crops, Animal Products,Soil,Transfer Coeffecient,Foodchain
