Radiometric profile of foods commercialized in a high natural radiation area and cancer risk assessment through computational simulation and experimental data

IF 1.8 3区工程技术 Q3 CHEMISTRY, INORGANIC & NUCLEAR

Applied Radiation and Isotopes Pub Date : 2025-09-08 DOI:10.1016/j.apradiso.2025.112155

Jonathan O. dos Santos , Leandro B. Silva , Alexander C.F. da Silva , Carlos O.P. Orejuela , Jardel L. Thalhofer , Ademir X. da Silva

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Abstract

The municipality of Poços de Caldas, in the state of Minas Gerais, Brazil, is designated as a high background radiation area (HBRA), owing to uranium mining activities that occurred there for thirteen years. This study examines the activity concentrations (AC) of ²²⁶Ra, ²²⁸Ra, ²²⁸Th, and ⁴⁰K in foods sold in Poços de Caldas. The findings enabled the evaluation and characterisation of the potential biological effects of gamma radiation exposure by estimating the committed effective dose (D_eff) and the related cancer risk (C_R). The Voxel Rex phantom, as described in ICRP 110 (2009), was utilized in conjunction with the MCNP 6.3 algorithm to provide a more realistic radiometric assessment of the foods. The radiometric study was performed with a Canberra HPGe detector with a relative efficiency of 30 %. The AC values for ⁴0K, ²²⁶Ra, ²²⁸Ra, and ²²⁸Th were (<15.84 to 791.76 ± 43.14), (<0.32 to 50.42 ± 1.91), (0.47 ± 0.04 to 41.58 ± 0.91), and (<0.29 to 31.95 ± 3.25) Bq kg⁻¹, respectively. No sample had a D_eff value greater than 1 mSv year⁻¹, as stated by NCNE (2024). Nineteen of the thirty-six samples evaluated had C_R values equal to or greater than the levels established by the United States Environmental Protection Agency (1999) as indicators of potential public health risks. The results were validated using the Bland-Altman method, which revealed that 100 % of the acquired results were within the confidence interval when compared to the experimental trials done in this study as well as data from other studies in the literature.

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高自然辐射地区商业化食品的辐射特征及通过计算模拟和实验数据进行的癌症风险评估

巴西米纳斯吉拉斯州的poos de Caldas市被指定为高本底辐射区（HBRA），因为在那里进行了13年的铀矿开采活动。本研究检测了卡尔达斯市销售的食品中226Ra、228Ra、228Th和40K的活性浓度（AC）。研究结果可以通过估算有效剂量（Deff）和相关癌症风险（CR）来评估和描述伽马辐射暴露的潜在生物学效应。如ICRP 110（2009）所述，将Voxel Rex幻影与MCNP 6.3算法结合使用，以提供更真实的食品辐射评估。放射学研究用堪培拉HPGe探测器进行，相对效率为30%。40K、226Ra、228Ra和228Th的AC值分别为（<15.84 ~ 791.76±43.14）、（<0.32 ~ 50.42±1.91）、（< 0.47±0.04 ~ 41.58±0.91）和（<0.29 ~ 31.95±3.25）Bq kg−1。根据NCNE（2024）的说法，没有样本的Deff值大于1 mSv year - 1。在评估的36个样本中，有19个样本的CR值等于或大于美国环境保护局（1999年）作为潜在公共健康风险指标确定的水平。使用Bland-Altman方法对结果进行验证，结果表明，与本研究的实验试验以及文献中其他研究的数据相比，获得的结果100%在置信区间内。

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来源期刊

Applied Radiation and Isotopes 工程技术-核科学技术

CiteScore

3.00

自引率

12.50%

发文量

406

审稿时长

13.5 months

期刊介绍： Applied Radiation and Isotopes provides a high quality medium for the publication of substantial, original and scientific and technological papers on the development and peaceful application of nuclear, radiation and radionuclide techniques in chemistry, physics, biochemistry, biology, medicine, security, engineering and in the earth, planetary and environmental sciences, all including dosimetry. Nuclear techniques are defined in the broadest sense and both experimental and theoretical papers are welcome. They include the development and use of α- and β-particles, X-rays and γ-rays, neutrons and other nuclear particles and radiations from all sources, including radionuclides, synchrotron sources, cyclotrons and reactors and from the natural environment. The journal aims to publish papers with significance to an international audience, containing substantial novelty and scientific impact. The Editors reserve the rights to reject, with or without external review, papers that do not meet these criteria. Papers dealing with radiation processing, i.e., where radiation is used to bring about a biological, chemical or physical change in a material, should be directed to our sister journal Radiation Physics and Chemistry.