摘要
本文报道湖北省土壤中天然放射性核素含量调查的结果。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379个,其中25×25 km 网格点土样286个。测量采用γ能谱法。结果表明:湖北省土壤中天然放射性核素含量按面积和按网格点加权平均值分别为:^(238)U,40.1和40.7Bq·kg^(-1);^(226)Ra,36.7和37.2Bq·kg^(-1);^(232)Th,51.0和51.0Bq·kg^(-1);^(40)K,555.4和553.1Bq·kg^(-1)。
This paper reports the methods and results of survey of natural radionuclides in soil in HubeiProvince.The collecting points of soil are same as the measuring points or γ radiation dose rate ofenvironmental ground.379 soil samples were collected and analysed by γ-spectrometry,of which 286points were sited in uniformly distributed networks of size 25×25 km.The results show that the area-weighted mean of ^(238)U,^(226)Ra,^(232)Th and ^(40)K was 40.1,36.7 51.0 and 555.4 Bq·kg^(-1),respectively.The point-weighted mean of ^(238)U,^(226)Ra,^(232)Th and ^(40)K was 40.7,37.2,51.0 and 553.1 Bq·kg^(-1),respectively.
出处
《辐射防护》
CAS
CSCD
北大核心
1992年第4期300-303,共4页
Radiation Protection
关键词
土壤
天然放射性
湖北
铀
镭
钍
Soil
Natural Radionuclide
Content
Survey
Hubei Province
