摘要
本文报道内蒙古自治区土壤中天然放射性核素含量的调查方法和结果。全区共采集668个土壤样品,其中25×25 km 网格点样品334个。测量采用γ能谱法。调查结果表明,内蒙古自治区土壤中天然放射性核素含量按面积和样品数加权的均值分别为:^(238)U,29.76和28.60 Bq·kg^(-1);^(232)Th,33.42和34.89 Bq·kg^(-1);^(226)Ra,27.49和26.95Bq·kg^(-1);^(40)K,655.56和624.63 Bq·kg^(-1)。
This paper reports the methods and results of survey of natural radioniclides in soil in InnerMongolia.668 soil samples were collected and analysed by γ-spectrometry,of which 334 points were set in uniformly distributed networks of size 25×25 km.The results show that the area-weighted meanof ^(238)U,^(232)Th,^(226)Ra and ^(40)K was 29.76,33.42,27.49 and 655.56 Bq·kg^(-1),respectively.The point-weighted mean of ^(238)U,^(232)Th,^(226)Ra and ^(40)K was 28.60,34.89,26.95 and 624.63 Bq·kg^(-1),respec-tively.
出处
《辐射防护》
CAS
CSCD
北大核心
1991年第5期370-374,393,共6页
Radiation Protection
关键词
土壤
放射性核素
含量
调查
Soil
Natural Radionuclide
Content
Survey
Inner Mongolia
