印度South Purulia剪切带附近岩土样品中238U、232Th和40K浓度估算

Q4 Medicine

International Journal of Low Radiation Pub Date : 2013-08-01 DOI:10.1504/IJLR.2013.055602

Saurabh Mittal, R. Guin, S. Sharma, D. Sengupta

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引用次数: 2

摘要

本文报道了沿南普鲁里亚剪切带(SPSZ)的低水平伽马能谱法圈定U和Th的初步测量结果。利用相对效率为50%的HPGe探测器对SPSZ周围广泛分布的岩石和土壤样品中的238U、232Th和40K浓度进行了估算。在所有样品中，在靠近Beldih地区(SPSZ)的样品中观察到最大浓度。人们试图研究这些岩石和土壤样品的浓度随剪切带位置的变化。发现剪切带中心部分的放射性核素浓度高于外围的样品。这证明，除了蚀变、变质、风化等作用外，剪切强度控制着样品中放射性核素的活性。报道了研究区土壤样品放射性核素活性与世界其他研究的比较。

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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Estimation of 238U, 232Th and 40K concentrations in rock and soil samples around South Purulia Shear Zone, India

The first few measurements for low level gamma ray spectrometry for the delineation of U and Th along South Purulia Shear Zone (SPSZ) are reported. Estimation of 238U, 232Th and 40K concentrations in widely dispersed rock and soil samples around SPSZ has been undertaken using HPGe detector having relative efficiency of 50%. The maximum concentration among all the samples studied is observed in the sample close to the Beldih region, SPSZ. An attempt has been made to study the variation in the concentration of these rock and soil samples with respect to location from the shear zone. Central part of the shear zone is found to contain higher concentration of radionuclides than the samples from the periphery. This proves that intensity of shearing controls the activity of radionuclides in a sample, apart from alteration, metamorphism, weathering, etc. A comparison of radionuclide activities of soil samples in study area with other studies worldwide is reported.

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来源期刊

International Journal of Low Radiation Environmental Science-Health, Toxicology and Mutagenesis

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期刊介绍： The IJLR is a peer-reviewed journal dedicated to the publication of research articles, review papers and technical notes in all domains related to low-dose radiation, among which are the biological and health effects in humans and the biota, in vitro and in vivo research on low radiation effects, regulatory and policy aspects, risk estimation and public perception.