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Transfer of uranium and thorium from soil to different parts of medicinal plants using SSNTD

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Abstract

The uptake of 238U and 232Th in different parts of some selected plants used in traditional treatment of hypertension and diabetes in south-eastern Morocco (Errachidia area) has been studied using two different types of solid state nuclear track detectors (SSNTDs) LR-115 type II and CR-39. Plant uptake of radionuclides is one of many vectors for introduction of contaminants into the human food chain. Thus, it is critical to understand soil–plant relationships that control nuclide bioavailability. Soil concentrations of uranium ranged from 6.10 to 11.62 ppm, with a mean of 7.90 ppm. Soil concentrations of thorium ranged from 2.70 to 4.80 ppm, with a mean of 3.41 ppm. Mean uranium specific activities were 8.38 Bq kg−1 in root tissue, 5 Bq kg−1 in stem tissue and 6.02 Bq kg−1 in leaf tissue. Mean thorium specific activities were 2.53 Bq kg−1 in root tissue, 1.64 Bq kg−1 in stem tissue and 1.96 Bq kg−1 in leaf tissue. The transfer factors of 238U and 232Th from soil to different parts (root, stem, leaf, seed and fruit) of studied plant samples have been investigated. The transfer factors obtained for root plants were markedly higher than those for leaf, stem, fruit and seed plants. Soil-to-plant transfer factor (TF) is one of the most important parameters to be used in transfer models for predicting the concentration of radionuclides in agricultural crops and for estimating dose impacts to man. This study of uranium and thorium uptake in plants used in traditional medicine is also significant as far as the health hazard effects of uranium and thorium in human being are concerned.

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Authors and Affiliations

  1. Department of Physics, Faculty of Sciences and Techniques, Sultan Moulay Slimane University, LPMM-ERM, BP 523, 23000, Beni-Mellal, Morocco

    L. Oufni

  2. Department of Physics, Faculty of Sciences Semlalia, Cadi Ayyad University, LPHA, BP 2390, 40000, Marrakech, Morocco

    S. Taj

  3. Polydisciplinary Faculty, Sultan Moulay Slimane University, L IRST, BP 523, 23000, Beni-Mellal, Morocco

    B. Manaut

  4. Department of Biology, Faculty des Sciences and Techniques, Moulay Ismaîl University, BP 509, Boutalamine, 52000, Errachidia, Morocco

    M. Eddouks

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  1. L. Oufni
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  2. S. Taj
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  4. M. Eddouks
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Correspondence to L. Oufni.

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Oufni, L., Taj, S., Manaut, B. et al. Transfer of uranium and thorium from soil to different parts of medicinal plants using SSNTD. J Radioanal Nucl Chem 287, 403–410 (2011). https://doi.org/10.1007/s10967-010-0888-7

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  • DOI: https://doi.org/10.1007/s10967-010-0888-7

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