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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] [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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Basir MS, Khan R, Akhi SZ, Ullah AKMA, Islam MA, Naher K, Idris AM, Khan MHR, Aldawood S, Saha N. Source specific sedimentary response towards the differential anthropogenic impacts in terms of potentially toxic elements in an urban river. MARINE POLLUTION BULLETIN 2024; 203:116425. [PMID: 38705004 DOI: 10.1016/j.marpolbul.2024.116425] [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: 03/25/2024] [Revised: 04/17/2024] [Accepted: 04/24/2024] [Indexed: 05/07/2024]
Abstract
To investigate the interplay between varying anthropogenic activities and sediment dynamics in an urban river (Turag, Bangladesh), this study involved 37-sediment samples from 11 different sections of the river. Neutron activation analysis and atomic absorption spectrometry were utilized to quantify the concentrations of 14 metal(oid)s (Al, Ti, Co, Fe, As, Cd, Cr, Cu, Fe, Hg, Mn, Ni, Pb, Zn). This study revealed significant toxic metal trends, with Principal coordinate analysis explaining 62.91 % of the variance from upstream to downstream. The largest RSDs for Zn(287 %), Mn(120 %), and Cd(323 %) implies an irregular regional distribution throughout the river. The UNMIX-model and PMF-model were utilized to identify potential sources of metal(oid)s in sediments. ∼63.65-66.7 % of metal(oid)s in sediments originated from anthropogenic sources, while remaining attributed to natural sources in both models. Strikingly, all measured metal(oid)s' concentrations surpassed the threshold effect level, with Zn and Ni exceeding probable effect levels when compared to SQGs.
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Affiliation(s)
- 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
| | - Rahat Khan
- Institute of Nuclear Science & Technology, Bangladesh Atomic Energy Commission (BAEC), Savar, Dhaka 1349, Bangladesh.
| | - 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
| | - A K M Atique Ullah
- Chemistry Division, Atomic Energy Centre, Bangladesh Atomic Energy Commission, Ramna, 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
| | - Narottam Saha
- Center for Mined Land Rehabilitation, Sustainable Minerals Institute, The University of Queensland, Saint Lucia, QLD 4072, Australia
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Habib MA, Akhi SZ, Khan R, Phoungthong K, Basir MS, Anik AH, Islam ARMT, Idris AM. Elevated levels of environmental radioactivity in fluvial sediment: origin and health risk assessment. ENVIRONMENTAL SCIENCE. PROCESSES & IMPACTS 2024; 26:555-581. [PMID: 38305448 DOI: 10.1039/d3em00455d] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/03/2024]
Abstract
To study the geogenic processes of naturally occurring radioactive materials' (NORMs') distribution, a transboundary Himalayan river (Punarbhaba) is chosen due to its trivial anthropogenic impacts. In explaining the genesis of radionuclides, transition elements (Sc, Ti, V, and Fe), rare-earth-elements (REEs: La, Eu, Ce, Yb, Sm, and Lu), Ta, Hf, Th, and U were analysed in 30 riverbed sediments collected from the Bangladeshi portion of the river. Elemental abundances and NORMs' activity were measured by neutron activation analysis and HPGe-gamma-spectrometry, respectively. Averagen=30 radioactivity concentrations of 226Ra (68.4 Bq kg-1), 232Th (85.7 Bq kg-1), and 40K (918 Bq kg-1) were 2.0-2.3-fold higher, which show elevated results compared to the corresponding world mean values. Additionally, mean-REE abundances were 1.02-1.38-times higher than those of crustal origin. Elevated (relative to earth-crust) ratios of Th/U (=3.95 ± 1.84) and 232Th/40K and statistical demonstrations invoke Th-dominant heavy minerals, indicating the role of kaolinite clay mineral abundance/granitic presence. However, Th/Yb, La/V, Hf/Sc, and Th/Sc ratios reveal the presence of felsic abundances, hydrodynamic sorting, and recycling of sedimentary minerals. Geo-environmental indices demonstrated the enrichment of chemical elements in heavy minerals, whereas radiological indices presented ionizing radiation concerns, e.g., the average absorbed-gamma-dose rate (123.1 nGy h-1) was 2.24-fold higher compared to the threshold value which might cause chronic health impacts depending on the degree of exposure. The mean excess lifetime cancer risk value for carcinogen exposure was 5.29 × 10-4 S v-1, which is ∼2-times greater than the suggested threshold. Therefore, plausible extraction of heavy minerals and using residues as building materials can alleviate the two-reconciling problems: (1) radiological risk management and (2) fluvial navigability.
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Affiliation(s)
- Md Ahosan Habib
- Faculty of Environmental Management, Prince of Songkla University, Songkhla 90112, Thailand.
- Geological Survey of Bangladesh, Segunbaghicha, Dhaka 1000, Bangladesh
| | - 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.
| | - Khamphe Phoungthong
- Faculty of Environmental Management, Prince of Songkla University, Songkhla 90112, Thailand.
| | - 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
| | - Amit Hasan Anik
- 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
| | - A R M Towfiqul Islam
- Department of Disaster Management, Begum Rokeya University, Rangpur 5400, Bangladesh
| | - Abubakr M Idris
- Department of Chemistry, College of Science, King Khalid University, Abha 62529, Saudi Arabia
- Research Center for Advanced Materials Science (RCAMS), King Khalid University, Abha 62529, Saudi Arabia
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