摘要
本文报道安徽省土壤中天然放射性核素含量调查的方法和结果。基本与环境陆地γ辐射剂量率调查同位布点,全省共采集土壤样品332个,其中包括25×25 km 网格点土壤样品216个,城镇加密点98个,特殊点18个。测量采用γ能谱法。调查结果表明,安徽省土壤中天然放射性核素含量按面积和按网格点的加权平均值分别为:^(238)U,41.8和41.4 Bq·kg^(-1);^(232)Th,53.0和53.1 Bq·kg^(-1);^(226)Ra,41.2和41.3 Bq·kg^(-1);^(40)K,548.7和553.4 Bq·kg^(-1)。
This paper reports the methods and results of survey of natural radionuclides in soil in AnhuiProvince.The collecting points of soil are same as the measuring points of γ radiation dose rate of envi-ronmental ground.332 soil samples were collected and analysed by γ-spectrometry,of which 216points were sited in uniformly distributed networks of size 25×25km,98 points were more denselydistributed in city and town areas,and 18 points were particularly distributed.The results show that thearea-weighted mean of ^(238)U,^(232)Th,^(226)Ra and ^(40)K was 41.8,53.0,41.2 and 548.7 Bq·kg^(-1),respec-tively.The point-weighted mean of ^(238)U,^(232)Th,^(226)Ra and ^(40)K was 41.4,53.1,41.3 and 553.4Bq·kg^(-1),respectively.
出处
《辐射防护》
CAS
CSCD
北大核心
1991年第4期291-294,共4页
Radiation Protection
关键词
土壤
放射性核素
天然
含量
调查
Soil
Natural Radionuclide
Content
Survey
Anhtui Province
