摘要
在上海市全市地域内,按网格布点对环境陆地γ辐射剂量率水平进行了长期、系统的监测和调查。调查结果表明,上海市天然贯穿辐射剂量率室内、外平均值分别为(12.26±1.29)×10^(-8)和(8.88±0.98)×10^(-8)Gy/h,属正常本底水平。上海市环境辐射场的特点是:原野γ辐射剂量率,东部和东北部较低,西部和黄浦江中游两岸稍高;以花岗岩为建材的石块路γ辐射剂量率较高,而柏油路面则较低;砖混与砖木建筑物室内γ辐射剂量率水平有显著性差异。上海市居民所受天然贯穿辐射剂量当量,郊县约为0.76mSv/a,市区为0.77mSv/a。
Long-term survey of γ Radiation dose levels on terrestrial environment in Shanghai Municipality has been conducted. The result showed that the average natural penetrating radiation dose rates for outdoor and indoor were (12.26±1.29)×10- 8 and (8.88±0.98)× 10-8 Gy/h respectively, which belong to normal background level. The field γRadiation dose rate in the east and northeast areas were abnormal low, while in the west area and the Thanks of mid-Huangpu River were rather high. The average natural γ Radiation dose rate for granite structure road was abnormal high and for bitumen structure road was abnormal low. There were obvious difference between γRadiation dose rates inside the buildings with different structure. The annual effective dose equivalent of natural γ Radiation was 0.76mSv for suburb and 0.77mSv for urban.
出处
《上海环境科学》
CAS
CSCD
1995年第7期38-40,共3页
Shanghai Environmental Sciences
关键词
陆地
区域环境
辐射剂量
Γ辐射
调查
上海市
Terrain Regional environment Radiation dose Gamma Radiation Investigation Shanghai
