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Radionuclides Transfer from Soil to Tea Leaves and Estimation of Committed Effective Dose to the Bangladesh Populace
Considering the probable health risks due to radioactivity input via drinking tea, the concentrations of (226)Ra, (232)Th,(40)K and (137)Cs radionuclides in the soil and the corresponding tea leaves of a large tea plantation were measured using high purity germanium (HPGe) γ-ray spectrometry. Differ...
Autores principales: | , , , , , , , , , , , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
MDPI
2021
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Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8066812/ https://www.ncbi.nlm.nih.gov/pubmed/33801699 http://dx.doi.org/10.3390/life11040282 |
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author | Absar, Nurul Abedin, Jainal Rahman, Md. Mashiur Miah, Moazzem Hossain Siddique, Naziba Kamal, Masud Chowdhury, Mantazul Islam Sulieman, Abdelmoneim Adam Mohamed Faruque, Mohammad Rashed Iqbal Khandaker, Mayeen Uddin Bradley, David Andrew Alsubaie, Abdullah |
author_facet | Absar, Nurul Abedin, Jainal Rahman, Md. Mashiur Miah, Moazzem Hossain Siddique, Naziba Kamal, Masud Chowdhury, Mantazul Islam Sulieman, Abdelmoneim Adam Mohamed Faruque, Mohammad Rashed Iqbal Khandaker, Mayeen Uddin Bradley, David Andrew Alsubaie, Abdullah |
author_sort | Absar, Nurul |
collection | PubMed |
description | Considering the probable health risks due to radioactivity input via drinking tea, the concentrations of (226)Ra, (232)Th,(40)K and (137)Cs radionuclides in the soil and the corresponding tea leaves of a large tea plantation were measured using high purity germanium (HPGe) γ-ray spectrometry. Different layers of soil and fresh tea leaf samples were collected from the Udalia Tea Estate (UTE) in the Fatickchari area of Chittagong, Bangladesh. The mean concentrations (in Bq/kg) of radionuclides in the studied soil samples were found to be 34 ± 9 to 45 ± 3 for (226)Ra, 50 ± 13 to 63 ± 5 for (232)Th, 245 ± 30 to 635 ± 35 for (40)K and 3 ± 1 to 10 ± 1 for (137)Cs, while the respective values in the corresponding tea leaf samples were 3.6 ± 0.7 to 5.7 ± 1.0, 2.4 ± 0.5 to 5.8 ± 0.9, 132 ± 25 to 258 ± 29 and <0.4. The mean transfer factors for (226)Ra, (232)Th and (40)K from soil to tea leaves were calculated to be 0.12, 0.08 and 0.46, respectively, the complete range being 1.1 × 10(−2) to 1.0, in accordance with IAEA values. Additionally, the most popularly consumed tea brands available in the Bangladeshi market were also analyzed and, with the exception of (40)K, were found to have similar concentrations to the fresh tea leaves collected from the UTE. The committed effective dose via the consumption of tea was estimated to be low in comparison with the United Nations Scientific Committee on the Effects of Atomic Radiation (UNSCEAR) reference ingestion dose limit of 290 μSv/y. Current indicative tea consumption of 4 g/day/person shows an insignificant radiological risk to public health, while cumulative dietary exposures may not be entirely negligible, because the UNSCEAR reference dose limit is derived from total dietary exposures. This study suggests a periodic monitoring of radiation levels in tea leaves in seeking to ensure the safety of human health. |
format | Online Article Text |
id | pubmed-8066812 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2021 |
publisher | MDPI |
record_format | MEDLINE/PubMed |
spelling | pubmed-80668122021-04-25 Radionuclides Transfer from Soil to Tea Leaves and Estimation of Committed Effective Dose to the Bangladesh Populace Absar, Nurul Abedin, Jainal Rahman, Md. Mashiur Miah, Moazzem Hossain Siddique, Naziba Kamal, Masud Chowdhury, Mantazul Islam Sulieman, Abdelmoneim Adam Mohamed Faruque, Mohammad Rashed Iqbal Khandaker, Mayeen Uddin Bradley, David Andrew Alsubaie, Abdullah Life (Basel) Article Considering the probable health risks due to radioactivity input via drinking tea, the concentrations of (226)Ra, (232)Th,(40)K and (137)Cs radionuclides in the soil and the corresponding tea leaves of a large tea plantation were measured using high purity germanium (HPGe) γ-ray spectrometry. Different layers of soil and fresh tea leaf samples were collected from the Udalia Tea Estate (UTE) in the Fatickchari area of Chittagong, Bangladesh. The mean concentrations (in Bq/kg) of radionuclides in the studied soil samples were found to be 34 ± 9 to 45 ± 3 for (226)Ra, 50 ± 13 to 63 ± 5 for (232)Th, 245 ± 30 to 635 ± 35 for (40)K and 3 ± 1 to 10 ± 1 for (137)Cs, while the respective values in the corresponding tea leaf samples were 3.6 ± 0.7 to 5.7 ± 1.0, 2.4 ± 0.5 to 5.8 ± 0.9, 132 ± 25 to 258 ± 29 and <0.4. The mean transfer factors for (226)Ra, (232)Th and (40)K from soil to tea leaves were calculated to be 0.12, 0.08 and 0.46, respectively, the complete range being 1.1 × 10(−2) to 1.0, in accordance with IAEA values. Additionally, the most popularly consumed tea brands available in the Bangladeshi market were also analyzed and, with the exception of (40)K, were found to have similar concentrations to the fresh tea leaves collected from the UTE. The committed effective dose via the consumption of tea was estimated to be low in comparison with the United Nations Scientific Committee on the Effects of Atomic Radiation (UNSCEAR) reference ingestion dose limit of 290 μSv/y. Current indicative tea consumption of 4 g/day/person shows an insignificant radiological risk to public health, while cumulative dietary exposures may not be entirely negligible, because the UNSCEAR reference dose limit is derived from total dietary exposures. This study suggests a periodic monitoring of radiation levels in tea leaves in seeking to ensure the safety of human health. MDPI 2021-03-27 /pmc/articles/PMC8066812/ /pubmed/33801699 http://dx.doi.org/10.3390/life11040282 Text en © 2021 by the authors. https://creativecommons.org/licenses/by/4.0/Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (http://creativecommons.org/licenses/by/4.0/ (https://creativecommons.org/licenses/by/4.0/) ). |
spellingShingle | Article Absar, Nurul Abedin, Jainal Rahman, Md. Mashiur Miah, Moazzem Hossain Siddique, Naziba Kamal, Masud Chowdhury, Mantazul Islam Sulieman, Abdelmoneim Adam Mohamed Faruque, Mohammad Rashed Iqbal Khandaker, Mayeen Uddin Bradley, David Andrew Alsubaie, Abdullah Radionuclides Transfer from Soil to Tea Leaves and Estimation of Committed Effective Dose to the Bangladesh Populace |
title | Radionuclides Transfer from Soil to Tea Leaves and Estimation of Committed Effective Dose to the Bangladesh Populace |
title_full | Radionuclides Transfer from Soil to Tea Leaves and Estimation of Committed Effective Dose to the Bangladesh Populace |
title_fullStr | Radionuclides Transfer from Soil to Tea Leaves and Estimation of Committed Effective Dose to the Bangladesh Populace |
title_full_unstemmed | Radionuclides Transfer from Soil to Tea Leaves and Estimation of Committed Effective Dose to the Bangladesh Populace |
title_short | Radionuclides Transfer from Soil to Tea Leaves and Estimation of Committed Effective Dose to the Bangladesh Populace |
title_sort | radionuclides transfer from soil to tea leaves and estimation of committed effective dose to the bangladesh populace |
topic | Article |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8066812/ https://www.ncbi.nlm.nih.gov/pubmed/33801699 http://dx.doi.org/10.3390/life11040282 |
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