摘要
以高纯锗伽马能谱分析仪测量了准东煤矿开采区土壤中放射性核素^(238)U、^(232)Th、^(226)Ra和^(40)K的比活度,测量值分别为24.53(13.82~36.71)Bq/kg、33.29(20.34~47.76)Bq/kg、48.7(27.98~72.64)Bq/kg和700.31(560.29~866.95)Bq/kg。将其同新疆及昌吉州的平均放射比活度进行了比较,并计算了距地面1 m高处空气中γ辐射吸收剂量率和年有效剂量率,最后对γ辐射外照射水平进行了评价。评价结果表明,准东煤矿开采区土壤中天然放射性水平处于正常范围内。
This paper compares the specific radioactivity of radionuclides 238U, 232Th, 226Ra and 40K in soil in the mining area of Zhundong Coal Mine measured via HPGe γ- ray spectrometer, with measured values of 24.53 （13.82 - 36. 71） Bq/kg, 33.29 （20.34-47.76） Bq/kg, 48.7 （27.98-72.64） Bq/kg and 700.31 （560.29-866.95） Bq/kg respectively, with the average specific radioactivity in Xinjiang and Changji, and calculates the γ radiation absorbed dose rate and annual effective dose rate at a height of 1 m above the ground, finally evaluates the external γ irradiation. The results show that the natural radioactivity in soil in the mining area of Zhundong Coal Mine is in normal range.
作者
杨永虎
孔利锋
李宗硕
陈勇
张琳
胡潇涵
YANG Yong-hu KONG Li-feng LI Zong-shuo CHEN Yong ZHANG Lin HU Xiao- han(Xinjiang Academy of Environmental Protection Science, Urumqi, Xinjiang 830011 Xinjiang Key Laboratory for Environmental Pollution Monitoring and Risk Warning, Urumqi, Xinjiang 830011, China）.)
出处
《新疆环境保护》
2017年第2期23-27,共5页
Environmental Protection of Xinjiang
基金
新疆维吾尔自治区科研机构创新创业基地专项资金项目(2012021)
关键词
准东煤矿开采区
天然放射性
γ能谱分析
土壤
评价
mining area of Zhundong Coal Mine
natural radioactivity
γ spectrum analysis
soil
evaluation
