Study of soil to plant transfer factors of 226Ra, 232Th, 40K and 137Cs in Vietnamese crops

Duong, Van-Hao; Nguyen, Thanh Duong; Peka, Anita; Hegedűs, Miklós; Csordás, Anita; Kovács, Tibor

doi:10.1016/j.jenvrad.2020.106416

Cited by 24 publications

(11 citation statements)

References 14 publications

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“…The soil-to-plant transfer factor (TF soil-plant ) is defined as the transfer of radionuclides from the soil to the plant by plant roots. TF soil-plant values were calculated according to Formula 1 using the radionuclide activity concentrations measured of the plant and of the corresponding soil in which this plant grows (Van et al, 2020;Ugbede et al, 2021).…”

Section: Activity Determinationmentioning

confidence: 99%

Transfer Factors of Natural Radionuclides from Soil to Medicinal Plants used by Local People in Eastern Anatolia, Turkey

Cengiz

Çağlar

2022

International Journal of Environment and Geoinformatics

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Medicinal plants are very useful plants for humans with the various molecules and vitamins they contain. Most of the plants that grow spontaneously in nature were taken into agricultural production practices after their healing properties were discovered. The use of pure active ingredients obtained from plants is quite common. These effective compounds are also used by the pharmaceutical industry in the preparation of modern drug formulations. However, possible high levels of natural radionuclides in medicinal plants, particularly 226 Ra, 232 Th and 40 K, have upraised anxieties regarding radiological risks from plant consumption. In this study, the natural radionuclide activity concentrations of 8 commonly used medicinal plants in the Eastern Anatolia Region of Turkey were determined by gamma spectrometric method using NaI(Tl) detector. The results of the analysis showed that the mean activity concentrations of 226 Ra, 232 Th and 40 K in medicinal plants were 21.05±2.80 Bq kg -1 , 55.99±4.32 Bq kg -1 and 908.29±11.86 Bq kg -1 , respectively. Mean transfer factor (TF) values from soil to plant were found to be 0.59, 0.88 and 1.52 for 226 Ra, 232 Th and 40 K, respectively. This present study shows that the use of these examined medicinal plants in the treatment of diseases will not pose any radiological health risks for humans.

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Section: Activity Determinationmentioning

confidence: 99%

Transfer Factors of Natural Radionuclides from Soil to Medicinal Plants used by Local People in Eastern Anatolia, Turkey

Cengiz

Çağlar

2022

International Journal of Environment and Geoinformatics

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“…Gamma-ray lines of 214 Pb at 351 keV and 214 Bi at 609.3 and 1764.5 keV were used to deter mine the ac tiv ity con cen tra tion of 226 Ra, whereas gamma-ray lines of 228 Ac at 338.4, 911.1, and 968.9 keV, 212 Pb at 238.63 keV, and 208 Tl at 583.19 keV were used to de ter mine the ac tiv ity con cen tra tion of 232 Th. The gamma-ray line at 1460.8 keV was used to es ti mate the ac tiv ity con cen tra tion of 40 K [13,14].…”

Section: Ra Dio Ac Tiv Ity Mea Sure Mentsmentioning

confidence: 99%

“…A sim i lar re sult was found higher TF of 40 K in leafy vege ta bles are higher than tu ber and le gumes in Viet namese veg e ta bles. When com par ing leafy veg e ta bles to other crops, the re search ers found that the higher TF value of 40 K in leafy veg e ta bles may be as cribed to the higher bio chem i cal po tas sium re quire ment as well as the greater avail abil ity of po tas sium in these veg e tables [14]. The TF val ues for 226 Ra are com pared to the up dated IAEA data com pi la tion for ra dio ac tive transport from soil to plants in the cur rent en vi ron ment.…”

Section: Coun Triesmentioning

confidence: 99%

Radioactivity concentration and transfer factors of natural radionuclides 226Ra, 232Th, and 40K from peat soil to vegetables in Selangor, Malaysia

et al. 2022

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The activity concentrations of naturally occurring radionuclides in vegetables and peat soil were investigated to determine the transfer factors of radionuclides from soil to vegetables obtained from farms in Klang Selangor. The results showed that the activity concentration ranges for 226Ra, 232Th, and 40K in the soil of the vegetable were 2.72-46.54 Bqkg-1, 9.01-54.84 Bqkg-1, and 19.22-477.76 Bqkg-1, respectively. The activity concentration ranges for 226Ra, 232Th, and 40K in various vegetable samples were 0.41-3.41 Bqkg-1, 0.02-3.56 Bqkg-1, and 16.22-317.49 Bqkg-1, respectively. The transfer factors from soil-to-plant for 226Ra, 232Th, and 40K were in the ranges of 0.01-0.67, 0.00-0.17, and 0.26-2.52, respectively. Radionuclide 40K has the highest transfer factor value in most vegetables, especially in the fruit type vegetable, and 232Th was found to have the lowest transfer factor value in all vegetables. The acquired results were compared to the levels that are globally recognized as acceptable. The transfer factor value of 40K was greater than 1 found in beans and fruit type vegetables, showing a similar value in other studies involving tropical plants, while transfer factor value for 226Ra was 15 times higher than the value reported in the data for tropical plants.

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“…Natural radionuclides from different sources in the environment, even in our bodies can originate from weathering of the earth's crust (rocks, soils, ores), food consumption, mining activity, and fertilizer materials (Azeez et al 2019, Querfeld et al 2019, Takagi et al 2019, Van et al 2020a, 2020b, 2020c, Loat et al 2021, Van et al 2021a, 2021b, 2021c, 2021d). In the air, radionuclides such as 222 Rn and 220 Rn originate from the alpha decay of 226 Ra in the 238 U series and 228 Ra ( 224 Ra) in the 232 Th decay series, respectively (Omori et al 2016).…”

Section: Introductionmentioning

confidence: 99%

Radiological risk assessment of outdoor ²²²Rn and ²²⁰Rn around rare earth element and uranium mines from northern Vietnam

et al. 2023

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The outdoor ²²²Rn and ²²⁰Rn concentrations at 320 sampling points at 1m above the ground in different sites surrounding rare earth element (REE) and uranium mines from northern Vietnam were measured using the RAD7. Results showed that ²²²Rn concentrations were always higher than ²²⁰Rn concentrations with large variation ranges from 25.7 to 573 Bq/m3 and from 18.5 to 385 Bq/m3, respectively. The high correlation between ²²⁰Rn and ²²⁸Ra concentrations in surface soil of the studied sites were observed. The highest ²²⁰Rn and ²²²Rn concentrations are found at the sampling points of the REE NX-Lai Chau site. The ²²⁰Rn and ²²²Rn activities surrounding the REE mines were found to be higher than those surrounding the uranium mines. The average annual committed effective doses originated from the inhalation of ²²⁰Rn and ²²²Rn outdoor concentrations is about five times higher than the worldwide average value as reported in UNSCEAR (2000).

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Study of soil to plant transfer factors of 226Ra, 232Th, 40K and 137Cs in Vietnamese crops

Cited by 24 publications

References 14 publications

Transfer Factors of Natural Radionuclides from Soil to Medicinal Plants used by Local People in Eastern Anatolia, Turkey

Transfer Factors of Natural Radionuclides from Soil to Medicinal Plants used by Local People in Eastern Anatolia, Turkey

Radioactivity concentration and transfer factors of natural radionuclides 226Ra, 232Th, and 40K from peat soil to vegetables in Selangor, Malaysia

Radiological risk assessment of outdoor ²²²Rn and ²²⁰Rn around rare earth element and uranium mines from northern Vietnam

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Study of soil to plant transfer factors of 226Ra, 232Th, 40K and 137Cs in Vietnamese crops

Cited by 24 publications

References 14 publications

Transfer Factors of Natural Radionuclides from Soil to Medicinal Plants used by Local People in Eastern Anatolia, Turkey

Transfer Factors of Natural Radionuclides from Soil to Medicinal Plants used by Local People in Eastern Anatolia, Turkey

Radioactivity concentration and transfer factors of natural radionuclides 226Ra, 232Th, and 40K from peat soil to vegetables in Selangor, Malaysia

Radiological risk assessment of outdoor 222Rn and 220Rn around rare earth element and uranium mines from northern Vietnam

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Radiological risk assessment of outdoor ²²²Rn and ²²⁰Rn around rare earth element and uranium mines from northern Vietnam