喀拉拉邦Kollam室内及海滩样本放射性水平调查及辐射危害指数评估

IF 1.6 3区工程技术 Q3 CHEMISTRY, INORGANIC & NUCLEAR

Applied Radiation and Isotopes Pub Date : 2025-04-07 DOI:10.1016/j.apradiso.2025.111824

M Ramsiya , AK Visnuprasad

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引用次数: 0

摘要

印度喀拉拉邦西南海岸的沙滩是世界上最丰富的钍资源之一。由于各种放射性核素的存在，这使附近地区的自然放射性增强。用伽玛射线能谱仪分析了喀拉拉邦科勒姆沿海地区48个住宅土壤样品和78个海滩土壤样品的天然放射性水平。住宅土壤样品的镭和钍含量高于海滩土壤样品，分别为54.7±1.0 - 21720.1±19.2 Bq kg - 1和110.3±1.1 - 95623±21.8 Bq kg - 1。使用测量仪和tld测量室外大气中的环境伽马射线剂量，两者呈正相关（R2 = 0.92）。在4个地点、3个间隔进行了海滩砂样品的垂直剖面研究。垂直剖面研究结果表明，30 ~ 40 cm深度处镭和钍的活度浓度大于0 ~ 10 cm，小于60 ~ 70 cm深度处。

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Investigation of radioactivity levels in the indoor and beach samples of Kollam, Kerala and the assessment of radiological hazard indices

The beach sand on the south-west coast of Kerala, India is one of the richest sources of thorium in the world. This causes enhanced natural radioactivity in the nearby locations due to the presence of various radionuclides. Natural radioactivity levels in 48 soil samples collected from houses and 78 samples collected from the beach along the coastal areas of Kollam, Kerala were analyzed using the gamma-ray spectrometer The radium and thorium content in the samples measured from houses is more than that of beach samples and it varies as 54.7 ± 1.0 – 21720.1 ± 19.2 Bq kg⁻¹ and 110.3 ± 1.1 – 95623 ± 21.8 Bq kg⁻¹ for radium and thorium respectively. The ambient gamma-ray dose in the outdoor atmosphere was measured using a survey meter and TLDs and the measurements showed a strong positive correlation (R² = 0.92). The vertical profile studies in beach sand samples were done for distances in 4 locations at three intervals. The results of vertical profile studies show that the activity concentration of radium and thorium at 30–40 cm depth was greater than that at 0–10 cm and less than that at 60–70 cm.

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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.