摘要
本文报道江西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,全省共采集并作分析的土壤样品有421个,其中网格点土样365个。测量采用γ能谱法。调查结果表明,按365个网格点土样的测量结果统计,江西省土壤(干样)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,55.9和57.4 Bq·kg^(-1);^(226)Ra,52.9和53.3 Bq·kg^(-1);^(232)Th,67.5和66.5 Bq·kg^(-1);^(40)K,617.3和617.0 Bq·kg^(-1)。
This paper reports the methods and results of survey of natural radionuclides insoil in Jiangxi Province.The collecting points of soil are same as the measuring points of γ ra-diation dose rate of environmental ground.421 soil samples were collected and analysed by γ-spectrometry,of which 365 points were sited in uniformly distributed networks of size 25 km×25 km.The results show that the area-weighted mean of ^(238)U,^(226)Ra,^(232)Th and ^(40)K was55.9,52.9,67.5 and 617.3 Bq·kg^(-1),respectively.The point-weighted mean of ^(238)U,^(226)Ra,^(232)Th and ^(40)K was 57.4,53.3,66.5 and 617.0 Bq·kg^(-1),respectively.
出处
《辐射防护》
CAS
CSCD
北大核心
1993年第4期291-294,共4页
Radiation Protection
关键词
土壤
天然放射性
江西
环境调查
Soil
Natural Radionuclide
Content
Survey
Jiangxi Province
