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Akhi SZ, Khan R, Basir MS, Habib MA, Islam MA, Naher K, Idris AM, Khan MHR, Aldawood S, Roy DK. Exploring the alteration of environmental radioactivity in terms of compositional elements of heavy minerals in an anthropogenically affected urban river: Radiological and ecological risks assessment. MARINE POLLUTION BULLETIN 2024; 206:116694. [PMID: 39002213 DOI: 10.1016/j.marpolbul.2024.116694] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/17/2024] [Revised: 07/02/2024] [Accepted: 07/03/2024] [Indexed: 07/15/2024]
Abstract
This study explored the alteration of naturally occurring radioactive materials (NORMs: 226Ra (≈238U), 232Th, 40K) in an anthropogenically disrupted urban river-basin (Turag, Bangladesh) in terms of constitutional substances (Sc, Ti, V, Fe, La, Ce, Sm, Eu, Tb, Dy, Ho, Yb, Lu, Hf, Ta, W, Th, U) of heavy-minerals. Average activity concentrations of 226Ra (≈238U), 232Th, and 40K were 41.5 ± 12.9, 72.1 ± 27.1, and 639 ± 100 Bqkg-1, respectively which were relatively higher compared to crustal origin. ∑REEs, Ta, W, Th, and U were ~2 times higher compared to crustal values with Ce and Eu-anomalies. APCS-MLR and PMF receptor models were used to determine the various anthropogenic and/or geogenic sources of NORMs and elements. Layer-wise variations of NORMs and elements were observed to trace the response of sedimentary processes towards the incoming pollution load. Presence of REEs indicates moderate degree of ecological risk to aquatic biota. However, carcinogenic risk (3.84 × 10-4 Sv-1) were significantly higher than threshold limit.
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Affiliation(s)
- Sayma Zahan Akhi
- Institute of Nuclear Science & Technology, Bangladesh Atomic Energy Commission (BAEC), Savar, Dhaka 1349, Bangladesh; Department of Environmental Science, Bangladesh University of Professionals (BUP), Mirpur-12, Cantonment, Dhaka 1216, Bangladesh
| | - Rahat Khan
- Institute of Nuclear Science & Technology, Bangladesh Atomic Energy Commission (BAEC), Savar, Dhaka 1349, Bangladesh.
| | - Md Samium Basir
- Institute of Nuclear Science & Technology, Bangladesh Atomic Energy Commission (BAEC), Savar, Dhaka 1349, Bangladesh; Department of Environmental Science, Bangladesh University of Professionals (BUP), Mirpur-12, Cantonment, Dhaka 1216, Bangladesh
| | - Md Ahosan Habib
- Geological Survey of Bangladesh, Segunbaghicha, Dhaka 1000, Bangladesh
| | - Mohammad Amirul Islam
- Institute of Nuclear Science & Technology, Bangladesh Atomic Energy Commission (BAEC), Savar, Dhaka 1349, Bangladesh
| | - Kamrun Naher
- Institute of Nuclear Science & Technology, Bangladesh Atomic Energy Commission (BAEC), Savar, Dhaka 1349, Bangladesh
| | - Abubakr M Idris
- Department of Chemistry, College of Science, King Khalid University, Abha 62529, Saudi Arabia
| | | | - Saad Aldawood
- Department of Physics and Astronomy, College of Science, P.O. BOX 2455, King Saud University, Riyadh 11451, Saudi Arabia
| | - Dhiman Kumer Roy
- Department of Geology and Mining, University of Barishal, Barishal 8254, Bangladesh
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Moniakowska A, Strumińska-Parulska D. Assessment of cancer risk and radiological effects from 210Po and 210Pb with consumption of wild medicinal herbal plants. J Trace Elem Med Biol 2024; 84:127452. [PMID: 38626651 DOI: 10.1016/j.jtemb.2024.127452] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/12/2024] [Revised: 03/15/2024] [Accepted: 04/12/2024] [Indexed: 04/18/2024]
Abstract
BACKGROUND Plants' raw materials can accumulate chemical elements, including radioisotopes, to some extent and reflect the region they grow in. Due to their high environmental content and toxicity, natural radionuclides - polonium 210Po and lead 210Pb are the most dangerous radioisotopes for human health. METHODS 70 raw medicinal herbal materials from 54 popular wild-growing medicinal plant species, most of them included in the European Pharmacopoeia, were collected across three regions. In 210 samples, the activity concentrations of 210Po and 210Pb were determined, and their radiotoxicity and cancer risk were calculated. RESULTS The results of 210Po and 210Pb activities measured in herbal raw material were from 0.12 mBq g-1 dry weight in the fruits of the common chestnut (Aesculus hippocastanum) to 19.7 mBq g-1 dw in herb of ground elder (Aegopodium podagraria) for 210Po, while for 210Pb ranged from 0.16 mBq g-1 dw to 34.3 mBq g-1 dw in the same plants. There were statistically significant differences between 210Po and 210Pb content in leaves, herbs, flowers, and fruit. The studies indicated that the estimated annual effective radiation dose from Polish medicinal herbs consumption was low, ranging 0.03-105 µSv from 210Po and 0.02-98.2 µSv from 210Pb, while the risk of cancer morbidity and mortality ranged from 10-5 to 10-9. CONCLUSIONS Consumption of the tested medicinal herbs is safe from the radiological point of view and, based on the predictions related to the calculated risk of cancer, should not increase the probability of its occurrence.
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Affiliation(s)
- Aleksandra Moniakowska
- Environmental Chemistry and Radiochemistry Department, Faculty of Chemistry, University of Gdańsk, Wita Stwosza 63, Gdańsk 80-308, Poland
| | - Dagmara Strumińska-Parulska
- Environmental Chemistry and Radiochemistry Department, Faculty of Chemistry, University of Gdańsk, Wita Stwosza 63, Gdańsk 80-308, Poland.
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Younis H, Ahmad MA, Azeem U, Shaik MR, Al-Warthan A, Shaik B, Jagnandan A, Jagnandan S, Ajaz M. Comprehensive Analysis of Contaminants in Powdered Milk Samples Using an HPGe for γ Radiation. ACS OMEGA 2024; 9:21089-21096. [PMID: 38764634 PMCID: PMC11097170 DOI: 10.1021/acsomega.4c00648] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 01/23/2024] [Revised: 04/18/2024] [Accepted: 04/25/2024] [Indexed: 05/21/2024]
Abstract
Aims: This study aimed to assess the activity concentrations and cancer risk assessments of 232Th and 40K in powdered milk samples collected from various suppliers in Pakistan, considering the increasing concern about cancer risks associated with environmental radiological effects related to food consumption. Subjects and Methods: Specific activity concentrations were determined using a high-resolution, high-purity germanium γ-spectroscopy system. Results: The specific activity levels of 40K and 232Th in the analyzed powdered milk samples were found to be 230.86 and 6.87 Bq/kg, respectively, well within the safe limits recommended by the United Nations Scientific Committee on the Effects of Atomic Radiation (UNSCEAR). The hazard index (0.074 Bq/kg) and radium equivalent (27.58 Bq/kg) were calculated as indicators of radiation hazard, along with absorbed dose (26.26 nGy/h), annual effective dose (0.13 nGy/h), and excess lifetime cancer risk (0.45). These parameters provide insights into the potential health risks associated with powdered milk consumption. Conclusions: The findings collectively affirm the radiological safety of the analyzed powdered milk samples, providing valuable insights into the potential health risks associated with their consumption.
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Affiliation(s)
- Hannan Younis
- Radiation
Physics Lab, Department of Physics, COMSATS
University Islamabad, 45550 Islamabad, Pakistan
| | - Mohammad Ayaz Ahmad
- Department
of Mathematics, Physics and Statistics, Faculty of Natural Sciences, University of Guyana, Georgetown, Guyanan 101110, South America
| | - Umair Azeem
- Radiation
Physics Lab, Department of Physics, COMSATS
University Islamabad, 45550 Islamabad, Pakistan
| | - Mohammed Rafi Shaik
- Department
of Chemistry, College of Science, King Saud
University, P.O. Box 2455, Riyadh 11451, Saudi Arabia
| | - Abdulrahman Al-Warthan
- Department
of Chemistry, College of Science, King Saud
University, P.O. Box 2455, Riyadh 11451, Saudi Arabia
| | - Baji Shaik
- School
of Chemical Engineering, Yeungnam University, Gyeongsan 38541, Republic of Korea
| | - Antalov Jagnandan
- Department
of Mathematics, Physics and Statistics, Faculty of Natural Sciences, University of Guyana, Georgetown, Guyanan 101110, South America
| | - Shawn Jagnandan
- Department
of Mathematics, Physics and Statistics, Faculty of Natural Sciences, University of Guyana, Georgetown, Guyanan 101110, South America
| | - Muhammad Ajaz
- Department
of Physics, Abdul Wali Khan University Mardan, Mardan 23200, Pakistan
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Kamislioglu M, Kocak I, Buyuk B, Eke C, Ozaydin Ozkara R, Temiz U. Investigation of natural and artificial radioactivity levels in travertines of the Cappadocia region in Turkey. ENVIRONMENTAL GEOCHEMISTRY AND HEALTH 2024; 46:181. [PMID: 38695964 PMCID: PMC11065933 DOI: 10.1007/s10653-024-01963-y] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/16/2023] [Accepted: 03/19/2024] [Indexed: 05/05/2024]
Abstract
This study determined natural and artificial radionuclide concentrations to evaluate natural radioactivity and health risk levels of nine travertines in the Yaprakhisar and Balkayası regions in Turkey. The samples coded B1-M, B2, B5, B7, B8, and B10 represent waste derived from the Yaprakhisar travertines, as well as samples T5-M, T12, and Z1 travertines derived from Balkayası. The levels of natural and artificial radionuclide concentrations (232Th, 40K, and 137Cs) were measured using a high-purity germanium (HpGe) detector system. The travertine activity ranged from 2.09 to 12.07 Bq kg-1 for 232Th, 4.21 to 13.41 Bq kg-1 for 40K, and 0.42-3.26 Bq kg-1 for 137Cs. The results showed that the activity concentration values for 232Th, 40K, and 137Cs were coherent with the travertine analysis results in the UNSCEAR, 2000; 2008 publications. The values obtained were lower than the average values in the UNSEAR reports. The radiological hazard parameters calculated in this study were absorbed gamma dose rate (D), radium equivalent activity (Raeq), annual gonadal dose equivalent (AGDE), exposure dose (ER), total annual effective dose (AEDEtotal), excess lifetime cancer risk (ELCRtotal), gamma representative level (GRL), internal hazard index (Hin) and external hazard index (Hex).
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Affiliation(s)
- M Kamislioglu
- Department of Medical Imaging, Vocational School of Health Services, Bandirma Onyedi Eylul University, 10200, Balikesir, Turkey
- Boron Technologies Application and Research Center, Bandirma Onyedi Eylul University, 10200, Balikesir, Turkey
| | - I Kocak
- Boron Technologies Application and Research Center, Bandirma Onyedi Eylul University, 10200, Balikesir, Turkey.
- Department of Engineering Science, Faculty of Engineering and Natural Sciences, Bandirma Onyedi Eylul University, 10200, Balikesir, Turkey.
| | - B Buyuk
- Boron Technologies Application and Research Center, Bandirma Onyedi Eylul University, 10200, Balikesir, Turkey
- Department of Engineering Science, Faculty of Engineering and Natural Sciences, Bandirma Onyedi Eylul University, 10200, Balikesir, Turkey
| | - C Eke
- Department of Mathematics and Science Education, Faculty of Education, Akdeniz University, 07058, Antalya, Turkey
| | - R Ozaydin Ozkara
- Nuclear Technology and Radiation Safety, Vocational School of Technical Sciences, Akdeniz University, 07058, Antalya, Turkey
| | - U Temiz
- Geological Engineering Department, Engineering and Architectural Faculty, Yozgat Bozok University, 66100, Yozgat, Turkey
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de Souza Pereira W, Kelecom A, Lopes JM, Charles-Pierre M, do Carmo AS, Paiva AK, Pelegrinelli SQ, Filho WSS, Silva LF, da Silva AX. Internal dose rate due to intake of uranium and thorium by fish from a dam reservoir associated with a uranium mine in Brazil. RADIATION AND ENVIRONMENTAL BIOPHYSICS 2024; 63:97-107. [PMID: 38197922 DOI: 10.1007/s00411-023-01051-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/24/2023] [Accepted: 11/18/2023] [Indexed: 01/11/2024]
Abstract
Uranium mining can cause environmental impacts on non-human biota around mine sites. Because of this, the reduction in non-human biota exposure becomes an important issue. Environmental radioprotection results from the evolution of human radioprotection; it is based on dose rate to non-human biota and uses, as a biological target, and has harmful effects on populations. In the present study, a flooded impoundment created following dam construction in a uranium mine plant undergoing decommissioning was investigated. Internal dose rates due to activity concentration of natural uranium (Unat) and 232Th in omnivorous, phytophagous, and carnivorous fish species were estimated. Radionuclide activity concentrations were obtained by spectrophotometry with arsenazo III in the visible range. The dose rate contribution of 232Th was lower than that of Unat. There were no differences between the internal dose rates to studied fish species due to 232Th, but there were differences for Unat. A dose rate of 2.30·10-2 µGy∙d-1 was found due to the two studied radionuclides. Although this value falls below the benchmark for harmful effects, it is important to acknowledge that the assessment did not account for other critical radionuclides from uranium mining, which also contribute to the internal dose. Moreover, the study did not assess external doses. As a result, the possibility cannot be excluded that dose rates at the study area overcome the established benchmarks for harmful effects.
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Upadhyay DR, Koirala G, Shah BR, Tajudin SM, Khanal R. Assessing radioactive contaminants in Kathmandu soils: measurement and risk analysis. ENVIRONMENTAL MONITORING AND ASSESSMENT 2024; 196:190. [PMID: 38261087 DOI: 10.1007/s10661-023-12284-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/25/2023] [Accepted: 12/29/2023] [Indexed: 01/24/2024]
Abstract
Soil samples from vegetable farmland in densely populated wards of Nepal were analyzed for natural radionuclide levels, employing a NaI(Tl) 3" [Formula: see text] 3" gamma detector. The study aimed to evaluate the causes of radiation risk, attributing it to soil contamination resulting from the rapid urbanization and concretization that followed the earthquake in 2015. The activity concentration of radium-226, thorium-232, and potassium-40 and the ranges observed are 2.080±0.084-33.675±1.356 Bq kg[Formula: see text], 17.222±0.198-119.949±1.379 Bq kg[Formula: see text], and 11.203 ± 0.325-748.828±21.716 Bq kg[Formula: see text], respectively. The average values obtained for hazard indices are as follows: radium equivalent activity (82.779 Bq kg[Formula: see text]), absorbed dose rate (36.394 nGy h[Formula: see text]), annual effective dose equivalent (0.045 mSv yearr[Formula: see text]), gamma index (0.291), external hazard index (0.224), internal hazard index (0.253), excess lifetime cancer risk (0.159), annual gonadal dose equivalent (243.278 mSv year[Formula: see text]), alpha index (0.054), and activity utilization index (0.716). However, in most places, thorium-232 concentration is greater than those of the world average and recommended values. In specific locations such as Ward 4 in Baluwatar, the soil was found to have concentrations of Ra[Formula: see text] and K[Formula: see text] exceeding recommended limits. Despite this localized concern, the overall analysis of hazard indices across the studied areas revealed that most values were within permissible limits. This suggests that, on a broader scale, radiation exposure may not be a significant concern in the investigated regions. Nonetheless, the study recommends regular monitoring in additional locations to ensure a comprehensive and ongoing assessment of radiation levels.
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Affiliation(s)
- Devendra Raj Upadhyay
- Central Department of Physics, Tribhuvan University, Kathmandu, 44600, Bagmati, Nepal.
- Department of Physics, Amrit Campus, Tribhuvan University, Kathmandu, 44600, Bagmati, Nepal.
| | - Gaurab Koirala
- Department of Physics, Amrit Campus, Tribhuvan University, Kathmandu, 44600, Bagmati, Nepal
| | - Buddha Ram Shah
- Nepal Academy of Science and Technology, Lalitpur, 3323, Bagmati, Nepal
| | - Suffian Mohamad Tajudin
- Faculty of Health Sciences, Sultan Zainal Abidin University, 21300, Terengganu, Kuala Terengganu, Malaysia
| | - Raju Khanal
- Central Department of Physics, Tribhuvan University, Kathmandu, 44600, Bagmati, Nepal
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7
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Gawad AEA, Eliwa H, Masoud MS, Khandaker MU, Hanfi MY. Assessment of the potential radiation hazards posed by Nubian sandstone, Egypt. Sci Rep 2023; 13:21202. [PMID: 38040723 PMCID: PMC10692078 DOI: 10.1038/s41598-023-47150-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/19/2023] [Accepted: 11/09/2023] [Indexed: 12/03/2023] Open
Abstract
The study found that the activity concentrations of the radionuclides 238U, 232Th and 40K in the sandstone are 32 ± 13, 29.6 ± 12.2, and 132.6 ± 86.4 Bq kg-1, respectively. These values are lower than the reported worldwide limits of 33, 45, and 412 Bq kg-1. According to the present study, the absorbed dose rate (Dair), the annual effective dose, and the excess life time cancer were all found to be below the worldwide mean. Pearson correlation, PCA, and HCA were used to analyze the data and identify patterns in the relationship between radionuclides and radiological hazards. A statistical analysis of the sandstones showed that the radioactive elements 238U, 232Th and 40K are the main contributors to the radioactive risk. The study suggests that the sandstone is safe to use. The levels of radioactivity are not high enough to pose a risk to human health.
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Affiliation(s)
| | - Hassan Eliwa
- Geology Department, Faculty of Science, Minufiya University, Shebin El Kom, Egypt
| | - Masoud S Masoud
- Nuclear Materials Authority, P.O. Box 530, El-Maadi, Cairo, Egypt
| | - Mayeen Uddin Khandaker
- Centre for Applied Physics and Radiation Technologies, School of Engineering and Technology, Sunway University, 47500, Bandar Sunway, Selangor, Malaysia
- Faculty of Graduate Studies, Daffodil International University, Daffodil Smart City, Birulia, Savar, Dhaka, 1216, Bangladesh
| | - Mohamed Y Hanfi
- Nuclear Materials Authority, P.O. Box 530, El-Maadi, Cairo, Egypt.
- Ural Federal University, St. Mira, 19, Yekaterinburg, Russia, 620002.
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Khan R, Basir MS, Akhi SZ, Anik AH, Hossain S, Islam HMT, Islam ARMT, Idris AM, Khan MHR, Aldawood S, Tareq SM. Radiation exposure and health concerns associated with the environmental geochemistry of relatively higher radioactivity in a fresh water basin. MARINE POLLUTION BULLETIN 2023; 196:115588. [PMID: 37806014 DOI: 10.1016/j.marpolbul.2023.115588] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/11/2023] [Revised: 09/19/2023] [Accepted: 09/23/2023] [Indexed: 10/10/2023]
Abstract
This study was carried out on a negligible anthropogenically impacted Indo-Bangla transboundary river basin (Atrai, Bangladesh) to elicit radionuclides' and elemental distributions. Thirty sediment samples were collected from the Bangladesh portion of the river, and instrumental neutron activation analysis and HPGe γ-Spectrometry techniques were used to determine environmental radionuclides (e.g., 232Th, 226Ra, 40K) and associated elemental concentrations, respectively. Metal concentrations (Sc, V, Fe, Eu, Sm, La, Yb, Ce, Lu, Ta, Hf) were determined to comprehend the genesis of greater radioactivity. Recognizing the mean concentration of absorbed gamma dose rate (158.7 hGyh-1) is 2.88-times more than the recommended value (55 hGyh-1) that describes ionizing radiation concerns regarding potential health risks to the surrounding communities and the houses of native residents, which are constructed by Atrai river sediment. This work will assist relevant policymakers in exploring valuable heavy minerals and provide information regarding radiological health risks from a fluvial system.
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Affiliation(s)
- Rahat Khan
- Institute of Nuclear Science & Technology, Bangladesh Atomic Energy Commission (BAEC), Savar, Dhaka 1349, Bangladesh.
| | - Md Samium Basir
- Department of Environmental Science, Bangladesh University of Professionals (BUP), Mirpur-12, Cantonment, Dhaka 1216, Bangladesh
| | - Sayma Zahan Akhi
- Department of Environmental Science, Bangladesh University of Professionals (BUP), Mirpur-12, Cantonment, Dhaka 1216, Bangladesh
| | - Amit Hasan Anik
- Department of Environmental Science, Bangladesh University of Professionals (BUP), Mirpur-12, Cantonment, Dhaka 1216, Bangladesh
| | - Shabiha Hossain
- Department of Environmental Science, Bangladesh University of Professionals (BUP), Mirpur-12, Cantonment, Dhaka 1216, Bangladesh
| | - H M Touhidul Islam
- Department of Disaster Management, Begum Rokeya University, Rangpur 5400, Bangladesh
| | - A R M Towfiqul Islam
- Department of Disaster Management, Begum Rokeya University, Rangpur 5400, Bangladesh; Department of Development Studies, Daffodil Internaitonal University, Dhaka 1216, Bangladesh
| | - Abubakr M Idris
- Department of Chemistry, College of Science, King Khalid University, Abha 62529, Saudi Arabia
| | | | - Saad Aldawood
- Department of Physics and Astronomy, College of Science, P.O. BOX 2455, King Saud University, Riyadh 11451, Saudi Arabia
| | - Shafi M Tareq
- Hydrobiogeochemistry and Pollution Control Laboratory, Department of Environmental Sciences, Jahangirnagar University, Dhaka 1342, Bangladesh
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Duong VH, Duong DT, Bui LV, Kim TT, Bui HM, Tran TD, Phan TT, Nguyen TD. Radiological Hazard Assessment of High-Level Natural Radionuclides in Surface Sediments Along Red River, Vietnam. ARCHIVES OF ENVIRONMENTAL CONTAMINATION AND TOXICOLOGY 2023; 85:302-313. [PMID: 37233742 DOI: 10.1007/s00244-023-01003-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/31/2022] [Accepted: 04/29/2023] [Indexed: 05/27/2023]
Abstract
The Red River is one of the largest rivers that plays an important role in the economic development of North Vietnam. There are many radionuclides bearing rare earth, uranium ore mines, mining industrial zones and magma intrusive formations along this river. The contamination and accumulation of radionuclides could exist at high concentration in surface sediments of this river. Thus, the present investigation aims to study the activity concentrations of 226Ra, 232Th (228Ra), 40K, and 137Cs in Red River surface sediments. Thirty sediment samples were collected, and their activity concentration was calculated using high-purity germanium gamma-ray detector. The observed results ranged from 51.0 ± 2.1 to 73.6 ± 3.7 for 226Ra, 71.4 ± 3.6 to 103 ± 5.2 for 232Th, 507 ± 24.0 to 846 ± 42.3 for 40K, and ND (not detected) to 1.33 ± 0.06 Bq/kg for 137Cs, respectively. In general, the natural radionuclides concentration of 226Ra, 232Th (228Ra), and 40K is higher than the average world average values. This indicated that the natural radionuclides could contribute from similar and principal sources surrounding the upstream of Lao Cai where distributed uranium ore mines, radionuclide bearing rare earth mines, mining industrial zones and intrusive formations. Regarding the radiological hazard assessment, results of the indices computed such as absorbed gamma dose rate (D), the excess lifetime cancer risk (ELCR), and the annual effective dose equivalent (AEDE) were nearly two times higher than world average values.
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Affiliation(s)
- Van-Hao Duong
- VNU School of Interdisciplinary Studies, Vietnam National University, Hanoi, Vietnam.
| | - Duc-Thang Duong
- Institute for Nuclear Science and Technology, Vinatom, 179 Hoang Quoc Viet, Cau Giay, Hanoi, 100000, Vietnam
| | - Loat Van Bui
- Faculty of Physics, University of Science, Vietnam National University, 334 Nguyen Trai, Hanoi, 100000, Vietnam.
| | - Thanh Tien Kim
- Centre of Nuclear Physics, Institute of Physics, Vietnam Academy of Science and Technology, 18 Hoang Quoc Viet, Cau Giay, Hanoi, 100000, Vietnam
| | - Hue Minh Bui
- Centre of Nuclear Physics, Institute of Physics, Vietnam Academy of Science and Technology, 18 Hoang Quoc Viet, Cau Giay, Hanoi, 100000, Vietnam
| | - Trong Dinh Tran
- Centre of Nuclear Physics, Institute of Physics, Vietnam Academy of Science and Technology, 18 Hoang Quoc Viet, Cau Giay, Hanoi, 100000, Vietnam
| | - Trinh Trong Phan
- Institute of Geological Sciences, Vietnam Academy of Science and Technology, Hanoi, Vietnam
| | - Thanh-Duong Nguyen
- Hanoi University of Mining and Geology (HUMG), 18 Vien, Duc Thang, Bac Tu Liem, Hanoi, 100000, Vietnam
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Yu Y, Zhou P, Men W. Impact of long-term operation of nuclear power plants on the marine ecosystem of Daya Bay. MARINE POLLUTION BULLETIN 2023; 193:115146. [PMID: 37356129 DOI: 10.1016/j.marpolbul.2023.115146] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/06/2023] [Revised: 05/29/2023] [Accepted: 06/03/2023] [Indexed: 06/27/2023]
Abstract
Based on the monitoring data of Daya Bay in 2011-2017, the impact of long-term operation of nuclear power plants (NPPs) on the marine ecosystem was accessed. 137Cs and 90Sr in seawater and sediment of Daya Bay decreased with time. The environmental half-lives of 137Cs and 90Sr in seawater, 137Cs in sediment were 7.1 a, 11.7 a and 13.9 a, respectively. The total dose rates of the marine organisms ranged from 230.5 to 853.9 nGy/h, lower than the ERICA screening benchmark (10 μGy/h). 210Po, 226Ra and 232Th were the main dose contributors. 137Cs and 90Sr contributed to ~0.01 %-~0.06 % of the total radiation. 137Cs contributed to <0.6 ‰ of the committed effective dose for humans. There were almost no radiation effects on the marine ecosystem of Daya Bay from NPPs before 2017. In the future, there will be no radiation risk for the long-term discharge of low-level radioactive waste to Daya Bay.
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Affiliation(s)
- Yue Yu
- School of Marine Sciences, Nanjing University of Information Science and Technology, Nanjing, PR China
| | - Peng Zhou
- Key Laboratory of Marine Environmental Survey Technology and Application, Ministry of Natural Resources, PR China
| | - Wu Men
- School of Marine Sciences, Nanjing University of Information Science and Technology, Nanjing, PR China.
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Jibiri NN, Ugbechie A, Sowunmi AA, Akomolafe IR. Radionuclide contents in sediment and seafood from Makoko Lagoon, Lagos State, Nigeria. MARINE POLLUTION BULLETIN 2023; 192:114992. [PMID: 37182242 DOI: 10.1016/j.marpolbul.2023.114992] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/14/2023] [Revised: 04/08/2023] [Accepted: 04/22/2023] [Indexed: 05/16/2023]
Abstract
Sediment and seafood samples were collected from Makoko Lagoon, Lagos state, Nigeria. Gamma-ray spectrometry was used to determine the activity concentrations of 40K, 226Ra and 232Th in the samples. The average activity concentrations of 40K, 226Ra and 232Th in the sediment were 41.04 ± 6.41, 10.15 ± 3.19 and 4.39 ± 2.10 Bq kg-1, respectively, while the annual effective dose was 0.01 mSv/year. In seafood, the average activity concentrations of 40K, 226Ra and 232Th were 15.66 ± 8.07, 1.72 ± 1.51 and 1.93 ± 0.30 Bq kg-1, respectively. The cumulative effective ingestion dose obtained ranged from 0.016 μSv/year (giant prawn) to 1.08 μSv/year (Parrotgrunt). The mean activity concentrations and absorbed dose rate in sediment were below the worldwide average values. The cumulative dose from the ingestion of seafood was also significantly low. Sediment and seafood from the lagoon in Makoko pose no health risk from a radiological point of view to the population.
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Affiliation(s)
- Nnamdi Norbert Jibiri
- Department of Physics, Radiation and Health Physics Research Laboratory, University of Ibadan, Ibadan, Nigeria
| | - Andrew Ugbechie
- Department of Physics, Radiation and Health Physics Research Laboratory, University of Ibadan, Ibadan, Nigeria
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12
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Influences of COVID-19 pandemic lockdown on excess lifetime cancer risk value of natural radiation. J Radioanal Nucl Chem 2021; 329:1399-1406. [PMID: 34334862 PMCID: PMC8315501 DOI: 10.1007/s10967-021-07910-w] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/21/2021] [Accepted: 07/14/2021] [Indexed: 11/27/2022]
Abstract
Abstract This study focuses on the consequences of the COVID-19 pandemic on annual effective doses and excess lifetime cancer risk values due to ionizing radiation and radon which has been reported UNSCEAR 2000. The random data collection questionnaire method was applied to assess the indoor and outdoor occupancy factor for three age groups during the epidemic in Turkey. The results indicated age group C (Age > 65 y) has more influence from pandemic indoor and outdoor occupancy factor. As compared to before pandemic data in study area and global average exposure to natural radioactive sources. Graphic abstract ![]()
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13
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Natural radioactivity levels and radiological implications in the high natural radiation area of Wadi El Reddah, Egypt. J Radioanal Nucl Chem 2021. [DOI: 10.1007/s10967-020-07554-2] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
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