Radiometric properties of virgin and cultivated soil around the Shazand Refinery Complex in Iran

Q4 Health Professions
M. Mohebian, R. Pourimani
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引用次数: 1

Abstract

Background: One of the main sources of exposure to radiation is terrestrial radionuclides in the environment. These radioisotopes are present in the Earth's crust and can be increased by human activity such as mining of coal, oil, and minerals. Materials and Methods: In this study, 39 soil samples including virgin and cultivated were collected from around of the Shazand Refinery Complex(SRC) using a template and experimental method. The gamma spectrometry method was used to measure the specific activity of the Ra, Th, K and Cs radionuclides. Results: The average concentrations of Ra, Th, K and Cs in the cultivated (virgin) soil samples were 21.95 ± 0.27 (23.99 ± 0.37), 25.37 ± 0.29 (31.74 ± 0. 38), 416.72 ± 1.88 (461.09 ± 2.68) and 5.13 ± 0.08 (5.51 ± 0.14) in Bq kg. Excess lifetime cancer risk (ELCR) was obtained for cultivated (virgin) soil as 0.19 × 10 (0.22 × 10), which is close to the world average (0.29 × 10) and lowers than the maximum acceptable value (10). Conclusion: The specific activities of natural radionuclides were in the global range and are lower than the maximum allowable value. The distribution map of Ra and Cs indicated some part of Ra, distributed as fly ash from a chimney, caused by the incineration of refinery waste. The radiological parameters calculated for both types of soil were lower than the maximum admissible values, and therefore there is no radiological hazard for people living in this area.
伊朗沙赞德炼油厂周围处女地和耕地土壤的辐射特性
背景:暴露于辐射的主要来源之一是环境中的地面放射性核素。这些放射性同位素存在于地壳中,可以通过人类活动(如开采煤炭、石油和矿物)而增加。材料和方法:本研究采用模板法和实验方法,从沙赞炼油厂周围采集了39份土壤样品,包括原始和栽培土壤。γ能谱法用于测定Ra、Th、K和Cs放射性核素的比活度。结果:栽培(原始)土壤样品中Ra、Th、K和Cs的平均浓度分别为21.95±0.27(23.99±0.37)、25.37±0.29(31.74±0。38)、416.72±1.88(461.09±2.68)和5.13±0.08(5.51±0.14)。栽培(原始)土壤的癌症超额寿命风险(ELCR)为0.19×10(0.22×10),接近世界平均水平(0.29×10)并低于最大可接受值(10)。结论:天然放射性核素比活度在全球范围内,低于最大允许值。Ra和Cs的分布图显示,Ra的一部分以烟囱飞灰的形式分布,是由焚烧炼油厂废物引起的。为这两种类型的土壤计算的放射性参数都低于最大容许值,因此对生活在该地区的人们没有放射性危害。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
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来源期刊
Iranian Journal of Radiation Research
Iranian Journal of Radiation Research RADIOLOGY, NUCLEAR MEDICINE & MEDICAL IMAGING-
CiteScore
0.67
自引率
0.00%
发文量
0
审稿时长
>12 weeks
期刊介绍: Iranian Journal of Radiation Research (IJRR) publishes original scientific research and clinical investigations related to radiation oncology, radiation biology, and Medical and health physics. The clinical studies submitted for publication include experimental studies of combined modality treatment, especially chemoradiotherapy approaches, and relevant innovations in hyperthermia, brachytherapy, high LET irradiation, nuclear medicine, dosimetry, tumor imaging, radiation treatment planning, radiosensitizers, and radioprotectors. All manuscripts must pass stringent peer-review and only papers that are rated of high scientific quality are accepted.
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