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<p>This study presents a comprehensive assessment of natural radioactivity and the associated radiological risk parameters in soil samples collected from the state of Rajasthan, India. A total of 119 soil samples were collected from distinct locations across the region. The activity concentrations of naturally occurring radionuclides <sup>226</sup>Ra, <sup>232</sup>Th, and <sup>40</sup>K were measured using a High-Purity Germanium (HPGe) based gamma-ray spectrometry system. The activity concentrations (in Bq kg<sup>−1</sup>) in the sample ranged from 15.2 ± 1.7 to 48.9 ± 2.2 for <sup>226</sup>Ra, 21.3 ± 2.5 to 89.2 ± 2.6 for <sup>232</sup>Th and 321.8 ± 15.5 to 955.9 ± 26.4 for <sup>40</sup>K, with mean values of 27.1 ± 1.8, 47.2 ± 1.7 and 517.3 ± 18.1&#xa0;Bq&#xa0;kg<sup>−1</sup> respectively. Radiological hazard indices, including the radium equivalent activity, external and internal hazard indexes and annual effective dose equivalent, were calculated to evaluate the potential health risks. All estimated values were found to be within the safety limits recommended by the United Nations Scientific Committee on the Effects of Atomic Radiation (UNSCEAR). The findings indicate that the levels of natural radioactivity in Rajasthan soils are comparable to global average values and do not pose significant radiological exposure. This study contributes valuable baseline data for environmental monitoring and radiological risk assessment in the region.</p>

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Environmental radioactivity and radiological hazard assessment of soil samples from Rajasthan, India

  • 期刊论文

  • 发表日期：

    2026年3月6日

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  • Mahesh Tiwari,
  • Amar Dutt Pant,
  • Tejas Rathod,
  • Sanjay Kumar Sahu,
  • Rahul Bhangare,
  • Amit Kumar Verma,
  • Anilkumar Pillai,
  • Vandana Pulhani

摘要

This study presents a comprehensive assessment of natural radioactivity and the associated radiological risk parameters in soil samples collected from the state of Rajasthan, India. A total of 119 soil samples were collected from distinct locations across the region. The activity concentrations of naturally occurring radionuclides 226Ra, 232Th, and 40K were measured using a High-Purity Germanium (HPGe) based gamma-ray spectrometry system. The activity concentrations (in Bq kg−1) in the sample ranged from 15.2 ± 1.7 to 48.9 ± 2.2 for 226Ra, 21.3 ± 2.5 to 89.2 ± 2.6 for 232Th and 321.8 ± 15.5 to 955.9 ± 26.4 for 40K, with mean values of 27.1 ± 1.8, 47.2 ± 1.7 and 517.3 ± 18.1 Bq kg−1 respectively. Radiological hazard indices, including the radium equivalent activity, external and internal hazard indexes and annual effective dose equivalent, were calculated to evaluate the potential health risks. All estimated values were found to be within the safety limits recommended by the United Nations Scientific Committee on the Effects of Atomic Radiation (UNSCEAR). The findings indicate that the levels of natural radioactivity in Rajasthan soils are comparable to global average values and do not pose significant radiological exposure. This study contributes valuable baseline data for environmental monitoring and radiological risk assessment in the region.