Investigation of naturally occurring radionuclides in selected medicinal plants and associated soils, and calculation of soil-to-plant transfer factors

This study investigated the activity concentrations of 226Ra, 232Th, and 40K and their soil-to-plant transfer factors in some medicinal plants located in Nepal. The geometric mean values of soil-to-plant transfer factors (TFs) for 226Ra, 232Th, and 40K were 0.37, 0.96, and 3.50, respectively. This i...

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Veröffentlicht in:Journal of environmental radioactivity 2024-12, Vol.280, p.107556, Article 107556
Hauptverfasser: Khanal, Madan, Acharya, Arjun, Maharjan, Rajesh, Upadhyay, Devendra Raj, Dhobi, Saddam Husain, Shah, Buddha Ram, Adhikari, Rameshwar, Mulmi, Deependra Das, Lamichhane, Tika Ram, Lamichhane, Hari Prasad
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container_title Journal of environmental radioactivity
container_volume 280
creator Khanal, Madan
Acharya, Arjun
Maharjan, Rajesh
Upadhyay, Devendra Raj
Dhobi, Saddam Husain
Shah, Buddha Ram
Adhikari, Rameshwar
Mulmi, Deependra Das
Lamichhane, Tika Ram
Lamichhane, Hari Prasad
description This study investigated the activity concentrations of 226Ra, 232Th, and 40K and their soil-to-plant transfer factors in some medicinal plants located in Nepal. The geometric mean values of soil-to-plant transfer factors (TFs) for 226Ra, 232Th, and 40K were 0.37, 0.96, and 3.50, respectively. This indicated that medicinal plants absorbed the highest amount of 40K from the soil, followed by 232Th, while 226Ra was absorbed the least. The average radium equivalent activities for medicinal plants (189 Bq/kg) and associated soils (182 Bq/kg) were within the international acceptable limit of 370 Bq/kg. According to the activity concentrations found in the medicinal plants, they do not present any radiological health hazards unless consumed in excessive quantities; however, continuous investigations are essential. •Medicinal plants absorbed the highest amount of 40K, followed by 232Th, and 226Ra.•The average Raeq for medicinal plants and soils were within safe limit of 370 Bq/kg.•The mean TF values for 226Ra, 232Th, and 40K were 0.37, 0.96, and 3.50, respectively.•Medicinal plants pose no radiological risk unless consumed in excessive amounts.
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According to the activity concentrations found in the medicinal plants, they do not present any radiological health hazards unless consumed in excessive quantities; however, continuous investigations are essential. •Medicinal plants absorbed the highest amount of 40K, followed by 232Th, and 226Ra.•The average Raeq for medicinal plants and soils were within safe limit of 370 Bq/kg.•The mean TF values for 226Ra, 232Th, and 40K were 0.37, 0.96, and 3.50, respectively.•Medicinal plants pose no radiological risk unless consumed in excessive amounts.</abstract><cop>England</cop><pub>Elsevier Ltd</pub><pmid>39489993</pmid><doi>10.1016/j.jenvrad.2024.107556</doi><orcidid>https://orcid.org/0009-0002-9680-2982</orcidid></addata></record>
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subjects Gamma spectroscopy
Medicinal plants
NaI(Tl) detector
Nepal
Plants, Medicinal - chemistry
Plants, Medicinal - metabolism
Potassium Radioisotopes - analysis
Radiation Monitoring - methods
Radioactivity
radium
Radium - analysis
soil
Soil - chemistry
Soil Pollutants, Radioactive - analysis
Soil Pollutants, Radioactive - metabolism
Thorium - analysis
Transfer Factor
Transfer factor (TF)
title Investigation of naturally occurring radionuclides in selected medicinal plants and associated soils, and calculation of soil-to-plant transfer factors
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