A preliminary study on the environmental monitoring, and estimation of the environmental dose in a high natural background radiation area of Ramsar, Iran.

IF 0.7 4区 环境科学与生态学 Q4 ENVIRONMENTAL SCIENCES
Sedigheh Sina, Mehrnoosh Karimipourfard, Fatemeh Lotfalizadeh, Zahra Rakeb, Fatemeh N Alizadeh, Amirali Falakian
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引用次数: 0

Abstract

High natural background radiation areas (HNBRAs) worldwide contribute additional radiation doses to humans, plants, and land animals. Among these regions, Talesh Mahalleh in Ramsar, Iran, is notable for having the highest levels of natural background radiation in the world. This study aimed to assess the natural radioactivity in this region. The study was performed in three phases: (i) analyzing the activity concentrations of radioactive elements in samples of soil, water, and plants, collected from various parts of Talesh Mahalleh, by gamma spectroscopy using a high-purity germanium detector. (ii) Measurement of the environmental radiation doses in different locations of the high background area using thermoluminescence dosimetry (TLD), for 2 months. (iii) The environmental radiation monitoring using a calibrated survey meter. The concentrations of natural radioactive materials, like Ra-226, Th-232, and K-40 activity were measured in soil, water, and plants. Based on the results, the maximum concentration of Ra-226 in the soil samples prepared from Talesh Mahalleh was found to be 16 687 Bq/kg. The survey meter indicated the dose rates of 2.51 to 8.43 μSv/h in the high background area of Talesh Mahalleh, which is much higher than the average natural background in the world. The results of TLD are in consistent with the online environmental monitoring. This preliminary research highlights the critical need for further studies on the measurement of external and internal dosimetry for terrestrial animals of this HNBRA.

伊朗拉姆萨尔高自然本底辐射区环境监测和环境剂量估计的初步研究。
世界各地的高自然本底辐射区(HNBRAs)对人类、植物和陆地动物造成额外的辐射剂量。在这些地区中,伊朗拉姆萨尔的Talesh Mahalleh因拥有世界上最高的自然本底辐射水平而闻名。本研究旨在评估该地区的天然放射性。这项研究分三个阶段进行:(i)利用高纯度锗探测器的伽马能谱分析从Talesh Mahalleh不同地区收集的土壤、水和植物样品中放射性元素的活性浓度。(ii)使用热释光剂量法测量高本底区不同地点的环境辐射剂量,为期两个月。(iii)使用经校正的测量仪表进行环境辐射监测。测量了土壤、水和植物中天然放射性物质的浓度,如Ra-226、Th-232和K-40的活性。结果表明,塔里什马哈勒地区土壤样品中Ra-226的最大浓度为16 687 Bq/kg。测量仪显示,塔里什·马哈勒高本底区的剂量率为2.51 ~ 8.43 μSv/h,远高于世界自然本底的平均水平。TLD检测结果与在线环境监测结果一致。这项初步研究强调了进一步研究该HNBRA陆生动物外部和内部剂量测量的迫切需要。
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来源期刊
Radiation protection dosimetry
Radiation protection dosimetry 环境科学-公共卫生、环境卫生与职业卫生
CiteScore
1.40
自引率
10.00%
发文量
223
审稿时长
6-12 weeks
期刊介绍: Radiation Protection Dosimetry covers all aspects of personal and environmental dosimetry and monitoring, for both ionising and non-ionising radiations. This includes biological aspects, physical concepts, biophysical dosimetry, external and internal personal dosimetry and monitoring, environmental and workplace monitoring, accident dosimetry, and dosimetry related to the protection of patients. Particular emphasis is placed on papers covering the fundamentals of dosimetry; units, radiation quantities and conversion factors. Papers covering archaeological dating are included only if the fundamental measurement method or technique, such as thermoluminescence, has direct application to personal dosimetry measurements. Papers covering the dosimetric aspects of radon or other naturally occurring radioactive materials and low level radiation are included. Animal experiments and ecological sample measurements are not included unless there is a significant relevant content reason.
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