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Suárez-Navarro JA, Gil-Pacheco E, Expósito-Suárez VM, Gómez-Mancebo MB, Vicente-Prieto N, García-Gómez H, Suárez-Navarro MJ, Sánchez-González SM, Caro A, Hernáiz G, Barragán M, Cid-Morillo C. Influence of soil chemical composition on U, 226Ra and 210Pb uptake in leaves and fruits of Quercus ilex L. JOURNAL OF ENVIRONMENTAL RADIOACTIVITY 2023; 264:107187. [PMID: 37186982 DOI: 10.1016/j.jenvrad.2023.107187] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/25/2022] [Revised: 03/03/2023] [Accepted: 04/18/2023] [Indexed: 05/17/2023]
Abstract
To determine their transfer factors, activity concentrations of natural radionuclides were measured in the leaves and acorns of holm oak (Quercus ilex L.) trees collected from seven locations with different soil properties and radionuclide activity concentrations. The chemical and mineralogical compositions of the soils were also analysed to investigate the effect these had on radionuclide absorption by the trees. Soil chemistry showed significant effects on radionuclide incorporation into Quercus ilex L. tissues. A significant relationship was established between activity concentrations and soil content of Ca and P with 238U and 226Ra in the leaves and acorns of Quercus ilex L. Differentiated transfer was found for 40K, which showed greater transfer to the leaves than the other radionuclides. The activity concentration of U and 226Ra was higher in the fruits than in the leaves, with the opposite effect being observed for 40K. The risk of U and 226Ra transfer into the food chain through acorn consumption by livestock is predicted to increase in soils poor in Ca and rich in P.
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Affiliation(s)
- J A Suárez-Navarro
- Centro de Investigaciones Energéticas, Medioambientales y Tecnológicas (CIEMAT), Avd/Complutense, 40, 28040, Madrid, Spain.
| | - E Gil-Pacheco
- Instituto de Recursos Naturales y Agrobiología de Salamanca (IRNASA-CSIC), CSIC, Consejo Superior de Investigaciones Científicas, C/Cordel de Merinas, 40, 37008, Salamanca, Spain
| | - V M Expósito-Suárez
- Centro de Investigaciones Energéticas, Medioambientales y Tecnológicas (CIEMAT), Avd/Complutense, 40, 28040, Madrid, Spain
| | - M B Gómez-Mancebo
- Centro de Investigaciones Energéticas, Medioambientales y Tecnológicas (CIEMAT), Avd/Complutense, 40, 28040, Madrid, Spain
| | | | - H García-Gómez
- Centro de Investigaciones Energéticas, Medioambientales y Tecnológicas (CIEMAT), Avd/Complutense, 40, 28040, Madrid, Spain
| | - M J Suárez-Navarro
- Universidad Politécnica de Madrid (UPM), Departamento de Hidráulica, Energía y Medioambiente, E.T.S.I. Caminos, Canales y Puertos, Profesor Aranguren s/n, 28040, Madrid, Spain
| | - S M Sánchez-González
- Universidad Europea Miguel de Cervantes, C/Padre Julio Chevalier, 2, 47012, Valladolid, Spain
| | - A Caro
- Centro de Investigaciones Energéticas, Medioambientales y Tecnológicas (CIEMAT), Avd/Complutense, 40, 28040, Madrid, Spain
| | - G Hernáiz
- Centro de Investigaciones Energéticas, Medioambientales y Tecnológicas (CIEMAT), Avd/Complutense, 40, 28040, Madrid, Spain
| | - M Barragán
- Centro de Investigaciones Energéticas, Medioambientales y Tecnológicas (CIEMAT), Avd/Complutense, 40, 28040, Madrid, Spain
| | - C Cid-Morillo
- Centro de Investigaciones Energéticas, Medioambientales y Tecnológicas (CIEMAT), Avd/Complutense, 40, 28040, Madrid, Spain
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Analysis of 238U, 226Ra, and 210Pb transfer factors from soil to the leaves of broadleaf tree species. NUCLEAR TECHNOLOGY AND RADIATION PROTECTION 2022. [DOI: 10.2298/ntrp2203219v] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/16/2023] Open
Abstract
This analysis of 238U, 226Ra and 210Pb transfer factors from the soil to the
leaves of different native broadleaf trees at sites previously modified by
uranium presence and at the site of background radioactivity levels, was
conducted using data from a few available studies from the literature. The
broadleaf tree species Quercus ilex, Quercus suber, Eucalyptus camaldulensis,
Quercus pyrenaica, Quercus ilex rotundifolia, Populus sp. and Eucalyptus
botryoides Sm. at the affected sites and Tilia spp. and Aesculus
hippocastanum L. at the back ground site were in cluded in the study
regardless of the deciduous or evergreen origins of the leaves. In the papers
cited here, data about basic soil parameters: pH, total Ca [gkg-1], sand [%],
and silt + clay [%] fractions were also available. All the collected data of
activity concentration [Bqkg-1] dry weight in the soil (n=14) which was in
the range: 22-6606 for 238U, 38-7700 for 226Ra, and 37-7500 for 210Pb, and
the tree leaves in the range: 2.7-137.6 for 238U (n=10), 2.6-134.2 for 226Ra
(n=14), and 27-77.2 for 210Pb (n=14), indicated that it was normally
distributed after log-transformation. The present study was conducted under
the hypothesis that biological differences between the examined broadleaf
tree species have a lesser influence on the transfer factors of the
investigated radionuclides from soil to tree leaves compared to the impact of
the soil parameters and radionuclides activity concentrations in the soil.
Consequently, it was examined whether 238U, 226Ra, and 210Pb soil-to-leaves
transfer factor values for average broadleaf species could be predicted
statistically in the first approximation based on their activity
concentration in the soil and at least one basic soil parameter using
multiple linear regression.
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Vanhoudt N, Van Gompel A, Vives I Batlle J. Distribution and behaviour of naturally occurring radionuclides within a Scots pine forest grown on a CaF 2 waste deposit related to the Belgian phosphate industry. JOURNAL OF ENVIRONMENTAL RADIOACTIVITY 2021; 233:106591. [PMID: 33798812 DOI: 10.1016/j.jenvrad.2021.106591] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/23/2020] [Revised: 03/10/2021] [Accepted: 03/11/2021] [Indexed: 06/12/2023]
Abstract
The distribution and behaviour of naturally occurring radionuclides within a vegetated part of a CaF2 sludge heap from the Belgian phosphate industry was studied. A Scots pine forest plot was selected as study area. Trees were approximately 20 years old and showed a disturbed health state. Seasonal sampling campaigns of soil, roots, wood, inner and outer bark, needles and twigs gave insight on 238U, 226Ra, 210Pb and 210Po transfer and distribution between pine tree compartments. Soil samples were analysed for their texture, total organic and inorganic carbon, field capacity, pH and radionuclide content. Solid-liquid distribution coefficients (Kd) were experimentally determined for 238U, 226Ra (using Ba as analogue) and 210Pb based on adsorption-desorption batch tests. Results indicated higher 238U, 232Th, 226Ra, 210Pb and 210Po activity concentrations in the deeper soil layers while the first 20 cm contained less radionuclides but had a higher level of organic carbon. Additionally, results indicated no seasonal changes in the 238U:226Ra ratio in the soil while the 226Ra:210Pb ratio was significantly higher in spring compared to winter in the 20-60 cm soil layer. Pine tree roots served as natural translocation barrier for all radionuclides with high retention in the roots and low translocation to the above ground tree compartments. When considering the above ground compartments, 210Pb and 210Po were mostly present in the bark, needles and twigs. Furthermore, 238U and its progeny were highly accumulated in mosses. These results allowed us to establish more realistic soil-to-plant transfer factors. In addition, experimentally mimicking pore water acidification in the root zone resulted in lower 238U and 210Pb Kd values compared to using a standard CaCl2 solution. This study provides an integrated radioecological picture of knowledge and site specific data needed to study the long-term influence of vegetation on radionuclide dispersion in forest ecosystems.
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Affiliation(s)
- Nathalie Vanhoudt
- Biosphere Impact Studies, Belgian Nuclear Research Centre (SCK CEN), Boeretang 200, 2400 Mol, Belgium.
| | - Axel Van Gompel
- Biosphere Impact Studies, Belgian Nuclear Research Centre (SCK CEN), Boeretang 200, 2400 Mol, Belgium
| | - Jordi Vives I Batlle
- Biosphere Impact Studies, Belgian Nuclear Research Centre (SCK CEN), Boeretang 200, 2400 Mol, Belgium
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Ugbede FO, Osahon OD, Agbalagba EO. Radiological Risk Assessment of 238U, 232Th and 40K in Soil and Their Uptake by Rice Cultivated in CAS Paddy Environment of Abakaliki, Nigeria. CHEMISTRY AFRICA 2021. [DOI: 10.1007/s42250-021-00244-w] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
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Khandaker MU, Zainuddin NK, Bradley D, Faruque M, Almasoud F, Sayyed M, Sulieman A, Jojo P. Radiation dose to Malaysian populace via the consumption of roasted ground and instant coffee. Radiat Phys Chem Oxf Engl 1993 2020. [DOI: 10.1016/j.radphyschem.2020.108886] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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Machraoui S, Mohan MP, Naregundi K, Labidi S. BASELINE STUDIES ON RADIONUCLIDE CONCENTRATION IN FOOD MATERIALS AND ESTIMATION OF THE COMMITTED RADIATION DOSE AROUND THE PHOSPHATE INDUSTRIAL AREA OF SOUTH TUNISIA. RADIATION PROTECTION DOSIMETRY 2019; 184:263-273. [PMID: 30517750 DOI: 10.1093/rpd/ncy208] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/04/2018] [Revised: 10/22/2018] [Accepted: 11/02/2018] [Indexed: 06/09/2023]
Abstract
The activity concentration of natural and anthropogenic radionuclides was determined in different vegetable samples, and foods derived from animal origin, from different locations in the four cities of Southern Tunisia, where large-scale phosphate industries are operating. The aim of the studies was to establish a baseline database on radionuclide concentration in food materials and to evaluate the radiation dose to the general population due to its ingestion through the food chain. The activity concentrations of 40K, 210Pb, 226Ra, 228Ra and 137Cs was determined by gamma spectrometry using a HPGe detector, and from the measured activity concentrations, the doses were estimated using the dose coefficients given by the ICRP. The dose due to intake of radionuclides through mineral water was also determined. The total annual effective doses were found to be 2.2, 1.4, and 0.7 mSv y-1 for 1 y, 5-15 y and adult (>17 y) age groups, respectively. Among the radionuclides studied, 210Po was the highest contributor to the total dose, followed by 210Pb.
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Affiliation(s)
- Sonia Machraoui
- University of Tunis El Manar, Higher Institute of Medical Technologies of Tunis, Research Laboratory in Biophysics and Medical Technologies, Tunis, Tunisia
| | - M P Mohan
- Centre for Advanced Research in Environmental Radioactivity, Mangalore University, Mangalagangothri, India
| | - Karunakara Naregundi
- Centre for Advanced Research in Environmental Radioactivity, Mangalore University, Mangalagangothri, India
| | - Salam Labidi
- University of Tunis El Manar, Higher Institute of Medical Technologies of Tunis, Research Laboratory in Biophysics and Medical Technologies, Tunis, Tunisia
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