通过监测从埃及西奈地区一些山脉和山谷采集的岩石和沙子样本中的rad-222，评估环境放射性影响及其相关放射性危害

Q4 Medicine

International Journal of Low Radiation Pub Date : 2017-10-31 DOI:10.1504/IJLR.2017.10008581

S. Fares

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引用次数: 1

摘要

使用伽马能谱技术测定了从埃及西奈半岛一些山脉和山谷采集的土壤和岩石样本中的天然放射性核素含量。放射性核素226Ra、238U、232Th和40K的总平均浓度分别为（51.37、50.02、19.34和286.66 Bq/kg）。研究区域的总平均吸收剂量率为47.08 nGy/h，而室内和室外的年有效剂量当量平均值分别为0.23和0.06 mSv/y。226Ra的活性范围为11.15±0.96 Bq/kg至135.85±11.68 Bq/kg。讨论了本研究的结果，并将其与国际推荐值进行了比较。测定了空气中氡气的浓度以及蔬菜中222Rn的活性浓度。在本研究中，使用一些数学方程模型来估计空气中222Rn的活性浓度。

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Evaluation of environmental radioactivity impacts and its associated radiological hazards with monitoring of radon-222 in rock and sand samples collected from some mountains and valleys in Sinai Area, Egypt

Determination of the natural radionuclide contents of soil and rock samples collected from some mountains and valleys in Sinai, Egypt, has been carried out using gamma spectrometric techniques. The total average concentrations of radionuclides 226Ra, 238U, 232Th, and 40K were (51.37, 50.02, 19.34, and 286.66 Bq/kg), respectively. The total average absorbed dose rate in the study areas is found to be 47.08 nGy/h, whereas the indoor and outdoor annual effective dose equivalent has an average value of 0.23 and 0.06 mSv/y respectively. The range of 226Ra activity was found from 11.15 ± 0.96 Bq/kg to 135.85 ± 11.68 Bq/kg. The results of the present study are discussed and compared with internationally recommended values. The concentrations of radon gas in the air were determined as well as the activity concentrations of 222Rn in vegetables. In the present study some mathematical equations models are used to estimate the activity concentrations of 222Rn in the air.

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来源期刊

International Journal of Low Radiation Environmental Science-Health, Toxicology and Mutagenesis

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期刊介绍： The IJLR is a peer-reviewed journal dedicated to the publication of research articles, review papers and technical notes in all domains related to low-dose radiation, among which are the biological and health effects in humans and the biota, in vitro and in vivo research on low radiation effects, regulatory and policy aspects, risk estimation and public perception.