Gamma spectroscopic investigation of construction materials from Rajasthan, India: Assessment of radioactivity and radiological hazards

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

Applied Radiation and Isotopes Pub Date : 2025-09-18 DOI:10.1016/j.apradiso.2025.112195

Surendra Degra , Nitin Kumar Bawalia , Vijay Pal Yadav , Raveena Malviya , Ram Kumar Meena , Pushpa Meena , Rajpal Gill , Shailesh Nath Tiwari , Sanjeet S. Kaintura , Pushpendra P. Singh , Karel Katovsky , Rajnikant Makwana , Nabanita Naskar , Dalpat Meena , Shailendra Kumar Gupta

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引用次数: 0

Abstract

This study focused on assessing the radioactivity of ²²⁶Ra, ²³²Th, and ⁴⁰K, along with their radiological health impacts in cement, marble slurry, and lime (CaO) samples used as construction materials collected from Rajasthan, India. The activity concentrations of ²²⁶Ra, and ²³²Th, with averages of 49.4 and 63.0 Bq kg⁻¹, respectively, were higher than the world average. Consequently, the radium equivalent (Ra_eq) in cement samples was 154.5 Bq kg⁻¹, exceeding the world average of 129.6 Bq kg⁻¹ but remaining below the safety guideline of 370 Bq kg⁻¹. In contrast, the levels of ²²⁶Ra, ²³²Th, ⁴⁰K, and Ra_eq in marble slurry and CaO were well below the world average. Notably, there is no existing literature on the radioactivity of CaO, a primary construction material in India, making this the first study to report on its radiological implications. The various parameters such as hazard indices (H_ex, H_in), level indices (I_α, I_γ), and activity utilization index (I) have been studied in all sample types for health risk assessment and found to be within permissible limits. Cement samples were found to have higher average ELCR resulting from AEDE which is derived from AGDR values in both indoor and outdoor environments compared to marble slurry and CaO samples. Hence, the average ELCR values resulting from AEDE which were derived from AGDR in both indoor and outdoor environments follow the trend: (ELCR)_Cement > (ELCR)_Slurry > (ELCR)_Lime.

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印度拉贾斯坦邦建筑材料的伽玛光谱调查：放射性和辐射危害评估

本研究的重点是评估226Ra、232Th和40K的放射性，以及它们在印度拉贾斯坦邦收集的作为建筑材料的水泥、大理石浆和石灰（CaO）样品中的放射性健康影响。226Ra和232Th活性浓度分别为49.4和63.0 Bq kg−1，高于世界平均水平。因此，水泥样品中的镭当量（Raeq）为154.5 Bq kg - 1，超过了129.6 Bq kg - 1的世界平均水平，但仍低于370 Bq kg - 1的安全指导值。相比之下，大理石浆料和CaO中226Ra、232Th、40K和Raeq的含量远低于世界平均水平。值得注意的是，目前没有关于CaO（印度主要建筑材料）放射性的文献，这是第一次报道其放射性影响的研究。各种参数，如危害指数（Hex、Hin）、水平指数（Iα、Iγ）和活动利用指数(I)，在所有类型的样本中进行了健康风险评估，并发现在允许的范围内。与大理石泥浆和CaO样品相比，在室内和室外环境中，由AGDR值得出的AEDE导致的水泥样品的平均ELCR更高。因此，在室内和室外环境下，由AGDR得出的AEDE的平均ELCR值遵循以下趋势：（ELCR）水泥>；（ELCR）泥浆>；（ELCR）石灰。

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

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.