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<p>The study analyzed radionuclide accumulation in <i>Urtica dioica</i> (stinging nettle) leaves, focusing on both natural and anthropogenic radionuclides. Samples of soil and leaves were measured for specific activity of key radionuclides (strontium-90, cesium-137, thorium-232, potassium-40, radium-226) using the MKGB-01 “RADEK” spectrometer-radiometer. All nettle samples from the Voronezh region met radiation safety standards. Correlation analysis revealed a strong relationship between the specific activity of anthropogenic radionuclides (strontium-90, cesium-137) and natural radionuclides (potassium-40, radium-226) in soil and leaves, with thorium-232 showing a medium degree of correlation. Since it is currently not possible to assess the contribution of radionuclide uptake in stinging nettle leaves from aerosols, we propose the only mechanism for the uptake of natural and anthropogenic radionuclides, which is solely through the plant’s root system. Increased specific activity of these radionuclides in soil led to higher concentrations in the medicinal plant material. Notably, cesium-137 and potassium-40 accumulated intensively in nettle leaves, highlighting their unique uptake from soil. The study of radionuclide accumulation coefficients in nettle leaves suggests physiological mechanisms regulating radionuclide penetration and selective accumulation in plant tissues. Using <i>Urtica dioica</i>’s ability to accumulate radioactive elements can enhance understanding of the biological behavior of medicinal plants in various ecosystems.</p>

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Study of Natural and Artificial Radionuclides Accumulation by Medicinal Plant Raw Materials on the Example of Nettle Leaves of Urtica dioica

  • 期刊论文

  • 发表日期：

    2025年6月25日

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  • Nina Alekseevna Dyakova,
  • Dmitry Evgenievich Lyubashevsky,
  • Elena Evgenievna Chupandina,
  • Andrey Aleksandrovich Pisklyukov

摘要

The study analyzed radionuclide accumulation in Urtica dioica (stinging nettle) leaves, focusing on both natural and anthropogenic radionuclides. Samples of soil and leaves were measured for specific activity of key radionuclides (strontium-90, cesium-137, thorium-232, potassium-40, radium-226) using the MKGB-01 “RADEK” spectrometer-radiometer. All nettle samples from the Voronezh region met radiation safety standards. Correlation analysis revealed a strong relationship between the specific activity of anthropogenic radionuclides (strontium-90, cesium-137) and natural radionuclides (potassium-40, radium-226) in soil and leaves, with thorium-232 showing a medium degree of correlation. Since it is currently not possible to assess the contribution of radionuclide uptake in stinging nettle leaves from aerosols, we propose the only mechanism for the uptake of natural and anthropogenic radionuclides, which is solely through the plant’s root system. Increased specific activity of these radionuclides in soil led to higher concentrations in the medicinal plant material. Notably, cesium-137 and potassium-40 accumulated intensively in nettle leaves, highlighting their unique uptake from soil. The study of radionuclide accumulation coefficients in nettle leaves suggests physiological mechanisms regulating radionuclide penetration and selective accumulation in plant tissues. Using Urtica dioica’s ability to accumulate radioactive elements can enhance understanding of the biological behavior of medicinal plants in various ecosystems.