伊朗赞詹省土壤中（226）镭和（40）钾的天然放射性水平。
Natural radioactivity levels of (226)RA and (40)K in soil of Zanjan province, Iran.
作者信息
Saghatchi F, Salouti M, Eslami A, Sharafi A
机构信息
Department of Radiology, Faculty of Paramedical and Health, Zanjan University of Medical Sciences, Zanjan, Iran.
出版信息
Radiat Prot Dosimetry. 2010 Sep;141(1):86-9. doi: 10.1093/rpd/ncq151. Epub 2010 May 19.
Radioactivity concentration of naturally occurring radionuclides, (226)Ra and (40)K, in soil samples of Zanjan province, in north-west of Iran and from 21 geographical areas was measured by gamma spectrometry. The activity concentration of (226)Ra ranged from 58.4 + or - 1.8 to 132 + or - 3.1 Bq kg(-1) with the mean value of 88.5 + or - 22.9 Bq kg(-1). The activity concentration of (40)K ranged from 267 + or - 5.9 to 791 + or - 8.1 Bq kg(-1) with the mean value of 497.4 + or - 162.6 Bq kg(-1). The mean values for absorbed dose rate in air and annual effective dose were determined as 62.6 + or - 16.5 nGy h(-1) and 0.076 + or - 0.02 mSv, respectively.
采用伽马能谱法测量了伊朗西北部赞詹省21个地理区域土壤样品中天然存在的放射性核素（226）镭和（40）钾的放射性浓度。（226）镭的活度浓度范围为58.4±1.8至132±3.1贝克勒尔每千克，平均值为88.5±22.9贝克勒尔每千克。（40）钾的活度浓度范围为267±5.9至791±8.1贝克勒尔每千克，平均值为497.4±162.6贝克勒尔每千克。空气中吸收剂量率和年有效剂量的平均值分别确定为62.6±16.5纳戈瑞每小时和0.076±0.02毫希沃特。
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