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<p>An in-situ radiometric survey was carried out in Setibeni Region of western Nepal to evaluate the distribution and potential radiological hazards associated with naturally occurring radioactive materials (NORMs). The survey employed a portable gamma-ray spectrometer (PGIS-2). The mean values recorded for the absorbed dose rate (ADR), annual effective dose rate (AEDR), and radium equivalent activity (<InlineEquation ID="IEq1"> <EquationSource Format="TEX">\(Ra_\textrm{eq}\)</EquationSource> <EquationSource Format="MATHML"><math> <mrow> <mi>R</mi> <msub> <mi>a</mi> <mtext>eq</mtext> </msub> </mrow> </math></EquationSource> </InlineEquation>) were 131.30 nGy hr<InlineEquation ID="IEq2"> <EquationSource Format="TEX">\(^{-1}\)</EquationSource> <EquationSource Format="MATHML"><math> <mmultiscripts> <mrow /> <mrow /> <mrow> <mo>-</mo> <mn>1</mn> </mrow> </mmultiscripts> </math></EquationSource> </InlineEquation>, 0.16 mSv yr<InlineEquation ID="IEq3"> <EquationSource Format="TEX">\(^{-1}\)</EquationSource> <EquationSource Format="MATHML"><math> <mmultiscripts> <mrow /> <mrow /> <mrow> <mo>-</mo> <mn>1</mn> </mrow> </mmultiscripts> </math></EquationSource> </InlineEquation>, 277.79 Bq kg<InlineEquation ID="IEq4"> <EquationSource Format="TEX">\(^{-1}\)</EquationSource> <EquationSource Format="MATHML"><math> <mmultiscripts> <mrow /> <mrow /> <mrow> <mo>-</mo> <mn>1</mn> </mrow> </mmultiscripts> </math></EquationSource> </InlineEquation>, respectively. Although these values exceeded the global averages, they remained within safe limits. The results highlight the need for continued environmental monitoring to safeguard public health in regions with elevated levels of natural radioactivity.</p>

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Assessment of natural radioactivity and associated hazard in the Setibeni Region along Kaligandaki River, Nepal

  • 期刊论文

  • 发表日期：

    2025年12月6日

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  • Bal Vikram Khatri,
  • Gunanidhi Pokhrel,
  • Karishma Rana,
  • Om Prakash Niraula,
  • Himali Kalakhety,
  • Raju Khanal

摘要

An in-situ radiometric survey was carried out in Setibeni Region of western Nepal to evaluate the distribution and potential radiological hazards associated with naturally occurring radioactive materials (NORMs). The survey employed a portable gamma-ray spectrometer (PGIS-2). The mean values recorded for the absorbed dose rate (ADR), annual effective dose rate (AEDR), and radium equivalent activity ( \(Ra_\textrm{eq}\) R a eq ) were 131.30 nGy hr \(^{-1}\) - 1 , 0.16 mSv yr \(^{-1}\) - 1 , 277.79 Bq kg \(^{-1}\) - 1 , respectively. Although these values exceeded the global averages, they remained within safe limits. The results highlight the need for continued environmental monitoring to safeguard public health in regions with elevated levels of natural radioactivity.