摘要
本文报道山西省土壤中天然放射性核素含量的调查方法和结果。基本与环境陆地γ辐射剂量率调查同位布点,全省共布25×25km网格点262个,城镇加密点103个,共采集土壤样品365个。测量采用放化分析方法。调查结果表明,山西省土壤中天然放射性核素含量按面积和样品数的加权均值分别为:^(238)U,36.62和36.39Bq·kg^(-1);^(232)Th,52.15和51.98Bq·kg^(-1);^(226)Ra,34.21和34.23Bq·kg^(-1);^(40)K,595.17和593.50Bq·kg^(-1)。全省土壤中天然放射性核素含量南部地区高于北部。
This paper presents the results of natural radionuclidescontent in soil in Shanxi Province. There were totally 365 samples collectedfrom 365 measuring points, among which 262 points were sited in uniformlydistributed networks of size 25×25km, and other 103 points were more densely distributed in cities area. The samples were analysed by radiochemicalmethod. The results showed that the area-weighted average concentrationof ^(238)U,^(232)Th, ^(226)Ra and ^(49)K was 36.62, 52.15, 34.21 and 595.17Bq.kg^(-1) respectively. The sample-weighted average concentration of ^(238)U,^(232)Th, ^(226)Ra and ^(40)K was 36.39, 51.98, 34.23 and 593.50Bq.kg^(-1)respectively. The natural radionuclide content in soil in different part ofthe province was different: higher in the south, lower in the north.
出处
《辐射防护》
CAS
CSCD
北大核心
1990年第6期460-465,416,共7页
Radiation Protection
关键词
土壤
天然
放射性
核素
含量
山西
Soil
Natural Radionuolide
Content
Investigation
Shanxi Province
