摘要
本文报道了内蒙古自治区天然环境陆地γ辐射水平调查方案、质量保证措施及调查结果。在全区110万余km^2的面积上以25×25km网格布设了1018个测点。全区天然环境原野γ辐射剂量率(离地1m高处的空气吸收剂量率,下同)范围为(0.96—18.62)×10^(-8)Gy·h^(-1),按测点、面积和人口加杈均值分别为5.45、5.32和5.72×10^(-8)Gy·h^(-1);全区道路γ辐射剂量率范围为(1.07—26.08)×10^(-8),平均值为5.92×10^(-8)Gy·h^(-1);全区建筑物室内γ辐射剂量率范围为3.82—18.94)×10^(-8)Gy·h^(-1),按点、按人口加杈均值分别为9.26和9.49×10^(-8)Gy·h^(-1);宇宙射线电离成分所致空气吸收剂量率室外变化范围为(3.12—5.55)×10^(-8)Gy·h^(-1),按点、按人口加杈均值分别为3.93和3.85×10^(-1),室内变化范围为(2.60—4.66)×10^(-8)Gy·h^(-1),按点、按人口加杈均值分别为3.52和3.40×10^(-8)Gy·h^(-1);天然贯穿辐射剂量率室外变化范围为(8.31—11.26)×10^(-8)Gyh^(-1),按点、按人口加杈均值分别为9.38和9.57×10^(-8)Gyh^(-1),室内变化范围为(11.20—14.67)×10^(-8)Gyh^(-1),按点、按人口加杈均值分别为12.78和12.89×10^(-8)Gy·h^(-1);天然贯穿辐射所致人均年有效剂量当量及集体年有效剂量当量分别为0.
This paper reportes the scheme, quality assurance measure,and results for environmental natural penetrating radiation level invest-igation in Inner Mongolia Autonomous Region. Over the whole Region areaof more than 1.18 million km^2, 1018 net grid measuring points were sele-cted with grid spacing of 25×25km. The range of natural environmentalterrestrial γ-radiation air absorbed dose rate over fields was(0.96-18.62)×10^(-8) Gy. h^(-1), the point-weighted, area-weighted and population-weightedmeans were 5.45, 5.32 and 5.72×10^(-8) Gy.h^(-1) respectively; the range ofγ-radiation dose rate over road was(1.07-26.08)×10^(-8) Gy.h^(-1), themean was 5.92×10^(-8) Gy.h^(-1); the range of γ-radiation dose rate in buildingswas (3.82-18.94)×10^(-8) Gy.h^(-1),point-weighted and population-weightedmeans were 9.26 and 9.49×10^(-8) Gy.h^(-1) respectively; the range of outdoorair absorbed dose rate caused by ionization compnents of cosmic rayswas (3.12-5.55)×10^(-8) Gy. h^(-1), point-weighted and population-weightedmeans were 3.93 and 3.85×10^(-8) Gy.h^(-1) respectively, while indoor rangewas(2.60-4.66)×10^(-8) Gy.h^(-1), point-weighted and population-weightedmeans were 3.52 and 3.40×10^(-8) Gy.h^(-1) respectively; the range of outdoornatural penetrating radiation dose rate was (8.31-11.26)×10^(-8) Gy.h^(-1),point-weighted and population-weighted means were 9.38 and 9.57×10^(-8)Gy.h^(-1) respectively, indoor range was (11.20-14.67)×10^(-8) Gy. h^(-1),point-weighted and population-weighted means were 12.78 and 12.89×10^(-8)Gy. h^(-1) respectively; annual average individual effective dose equivalentand annual collective effective dose equivalent caused by natural penetratingradiation were 0.84 mSv and 1.61×10~4man.Sv respectively. The geographicaldistribution of terrestrialγ-radiation dose rate within all region wasreported in this paper, the increase of environmental terrestial γ-radiationcaused by human activity was also pointed This ought to be paid enoughattention to
出处
《辐射防护》
CAS
CSCD
北大核心
1990年第6期435-448,共14页
Radiation Protection
关键词
Γ辐射
天然本底
环境
剂量率
Fnvironment
Terrestrial γ-radiation
Dose Rate
Investigation
Inner Mongolia Autonomous Region
