【摘要】 本文报告辽河平原土壤中天然放射性核素含量调查结果。本次调查共采集土壤样品407个。样品测定采用放射化学分析方法。结果表明,辽河平原土壤中天然放射性核素含量,按各类土壤测点数加权平均值为:²³⁸U,27.0Bq·kg^-1(范围7.8—50.9Bq·kg^-1);²³²Th,37.4Bq·kg^-1(4.9—82.5Bq·kg^-1);²²⁶Ra,36.7Bq·kg^-1(6.2—97.2Bq·kg^-1);⁴⁰K,676Bq·kg^-1(335—1121Bq·kg^-1)。更多还原

【Abstract】 The results of survey of natural radionuclide contents insoil of liaohe plain is reported in this paper.407 soil samples wereanalysed by radiochemical analysis method.The results show that the meanof natural radionuclide contents,weighted by measured points of variouskind of soil,for ²³⁸U,²³²Th,²²⁶Ra,⁴⁰K were 27.0（7.8—50.9）,37.4（4.9—82.5）,36.7（6.2—97.2）,676（335—1121）Bq/Kg,respectively.更多还原