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El-Qassas RAY. Evaluation of the environmental and structural impacts on urban expansion using airborne geophysical data at Hurghada city, Northern Eastern Desert, Egypt. RADIATION PROTECTION DOSIMETRY 2024; 200:862-879. [PMID: 38836607 DOI: 10.1093/rpd/ncae135] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/28/2023] [Revised: 04/17/2024] [Accepted: 05/17/2024] [Indexed: 06/06/2024]
Abstract
Airborne gamma-ray spectrometric and magnetic data were processed and interpreted aiming to evaluate the environmental and structural impacts on urban expansion, Hurghada City, Northern Eastern Desert, Egypt. The eastern (coastal area), northern, and southeastern parts of the study area possess the lowest level of absorbed dose rate (ADR) and annual effective dose equivalent (AEDE), which were estimated from the airborne gamma-ray spectral data of this area. Consequently, these parts are considered as suitable sites for urban expansion from the radioactivity point of view. The relatively high level of ADR and AEDE is associated with granitic rocks, some parts of Gabir formation and recent Wadi sediments, situated at southwestern, central, and eastern parts of the study area. The ADR and AEDE of these parts are considered harmful to individuals. Airborne magnetic data were also used to detect major structures that may affect various construction projects in the study area in the future. The NNW-SSE, NW-SE, N-S, and NE-SW trends represent the common structures in the study area. The obtained results of airborne gamma-ray spectrometric and magnetic data illustrated that the urban expansion should not be constructed to the west of the ring road. However, site investigations must be carried out on this part of the study area before starting any construction projects there. The present study proved the important role of airborne gamma-ray spectrometric and magnetic surveys as useful tools to delineate the environmental and structural impacts on urban expansion.
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Mitra P, Mishra MK, Reddy GP, Srivastava S, Salunkhe SS, Kumari A, Gavas SG, Ninawe PR, Thekkinkattil M, Garg S, Kumar AV. Countrywide monitoring of absorbed dose rate in air due to outdoor natural gamma radiation in India. RADIATION PROTECTION DOSIMETRY 2023:ncad185. [PMID: 37366153 DOI: 10.1093/rpd/ncad185] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/26/2023] [Revised: 05/12/2023] [Accepted: 06/01/2023] [Indexed: 06/28/2023]
Abstract
The Indian Environmental Radiation Monitoring Network continuously monitors, throughout India, the absorbed dose rate in air due to outdoor natural gamma radiation, by using Geiger-Mueller detector-based standalone environmental radiation monitors. The network consists of 546 monitors spread across 91 monitoring locations distributed all over the country. In this paper, the countrywide long-term monitoring results are summarised. The measured mean dose rate of the monitoring locations followed a log-normal distribution and ranged from 50 to 535 nGy.h-1 with a median value of 91 nGy.h-1. Due to outdoor natural gamma radiation, the average annual effective dose was estimated to be 0.11 mSv.y-1.
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Affiliation(s)
- Pratip Mitra
- Environmental Monitoring and Assessment Division, Bhabha Atomic Research Centre, Mumbai 400085, India
| | - Manish K Mishra
- Environmental Monitoring and Assessment Division, Bhabha Atomic Research Centre, Mumbai 400085, India
| | - Gade Priyanka Reddy
- Environmental Monitoring and Assessment Division, Bhabha Atomic Research Centre, Mumbai 400085, India
| | - Saurabh Srivastava
- Environmental Monitoring and Assessment Division, Bhabha Atomic Research Centre, Mumbai 400085, India
- Homi Bhabha National Institute, Mumbai 400094, India
| | - Sandip S Salunkhe
- Environmental Monitoring and Assessment Division, Bhabha Atomic Research Centre, Mumbai 400085, India
| | - Anisha Kumari
- Environmental Monitoring and Assessment Division, Bhabha Atomic Research Centre, Mumbai 400085, India
| | - Sanjay G Gavas
- Environmental Monitoring and Assessment Division, Bhabha Atomic Research Centre, Mumbai 400085, India
| | - Pruthviraj R Ninawe
- Environmental Monitoring and Assessment Division, Bhabha Atomic Research Centre, Mumbai 400085, India
| | - Mukundan Thekkinkattil
- Environmental Monitoring and Assessment Division, Bhabha Atomic Research Centre, Mumbai 400085, India
| | - Saurabh Garg
- Environmental Monitoring and Assessment Division, Bhabha Atomic Research Centre, Mumbai 400085, India
| | - Aerattukkara Vinod Kumar
- Environmental Monitoring and Assessment Division, Bhabha Atomic Research Centre, Mumbai 400085, India
- Homi Bhabha National Institute, Mumbai 400094, India
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Pereira WS, Kelecom A, Lopes JM, Charles-Pierre M, Campelo ELC, Carmo AS, Filho LGP, Paiva AKS, Silva AX. Application of radiological assessment as water quality criterion for effluent release in a Brazilian uranium mine. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2023; 30:65379-65391. [PMID: 37084045 DOI: 10.1007/s11356-023-26964-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/29/2022] [Accepted: 04/08/2023] [Indexed: 05/03/2023]
Abstract
Uranium mining causes several radiological impacts on the surrounding environment, notably in the water bodies, mainly due to the release of long half-life radionuclides from the 238U and 232Th series. The Ore Treatment Unit, an old uranium mine undergoing decommissioning, has three points of liquid effluent release (#014, #025, and #076). For current study, 78 samples of water were collected at #014, 33 samples at #025, and 63 samples at #076. The radionuclides were analyzed by gross alpha count, gross beta count, and by arsenazo spectrophotometry. Analyses were carried out using the radiological water quality criterion established by World Health Organization and other organizations, together with the Brazilian legislation, to assess if the released effluents may be used unrestrictedly by the individuals of the public. At #014, the mean values of activity concentration (AC), in Bq·L-1, were as follows: Unat = 0.107, 226Ra = 0.035, 210Pb = 0.031, 232Th = 0.007, and 228Ra = 0.049. At #025 the mean values of AC, in Bq·L-1, were as follows: Unat = 0.086, 226Ra = 0.015, 210Pb = 0.028, 232Th = 0.006, and 228Ra = 0.032. Finally, at point #076, the mean AC values, in Bq·L-1, were as follows: Unat = 3.624, 226Ra = 0.074, 210Pb = 0.054, 232Th = 0.013, and 228Ra = 0.069. The current study showed that natural radionuclides were not in secular equilibrium. Despite uranium presented its values outside the limits of guidance levels, it can be state that the unrestricted use of effluents released in the three water bodies is authorized from the radiological point of view. In terms of dose rate, the releases at three points were within the radiological limits of potability. On the other hand, in an additional analysis, #76 presented chemical toxicity above the authorized value, pointing the need of restricted use of water from the point of view of chemical toxicity.
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Affiliation(s)
- Wagner S Pereira
- Indústrias Nucleares do Brasil S/A - INB, 27.555-000, Resende, RJ, Brasil.
- Programa de Engenharia Nuclear, Universidade Federal do Rio de Janeiro - UFRJ, 21.941-972, Rio de Janeiro, Brasil.
| | - Alphonse Kelecom
- Instituto de Biologia, Universidade Federal Fluminense - UFF, 24.001-970, Niterói, Brasil
| | - José M Lopes
- Departamento de Física da Terra e do Meio Ambiente, Instituto de Física, Universidade Federal da Bahia - UFBA, 40.170-115, Salvador, Brasil
- Programa de Pós-Graduação em Geoquímica (POSPETRO), Universidade Federal da Bahia - UFBA, 40.170-110, Salvador, Brasil
| | - Maxime Charles-Pierre
- Programa de Engenharia Nuclear, Universidade Federal do Rio de Janeiro - UFRJ, 21.941-972, Rio de Janeiro, Brasil
| | | | - Alessander S Carmo
- Setor de Criogenia, Centro Brasileiro de Pesquisas Físicas - CBPF, 22290-180, Rio de Janeiro, Brasil
| | - Lucas G Padilha Filho
- Departamento de Radiologia, Hospital Universitário Clementino Fraga Filho, Universidade Federal do Rio de Janeiro - UFRJ, 21941-617, Rio de Janeiro, Brasil
- Fundação Técnico Educacional Souza Marques - FTESM, 21310-310, Rio de Janeiro, Brasil
| | - Alexandre K S Paiva
- Programa de Engenharia Nuclear, Universidade Federal do Rio de Janeiro - UFRJ, 21.941-972, Rio de Janeiro, Brasil
| | - Ademir X Silva
- Programa de Engenharia Nuclear, Universidade Federal do Rio de Janeiro - UFRJ, 21.941-972, Rio de Janeiro, Brasil
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Pandit P, Mangala P, Saini A, Bangotra P, Kumar V, Mehra R, Ghosh D. Radiological and pollution risk assessments of terrestrial radionuclides and heavy metals in a mineralized zone of the siwalik region (India). CHEMOSPHERE 2020; 254:126857. [PMID: 32353810 DOI: 10.1016/j.chemosphere.2020.126857] [Citation(s) in RCA: 20] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/09/2019] [Revised: 04/08/2020] [Accepted: 04/19/2020] [Indexed: 06/11/2023]
Abstract
The present study reveals the distribution of terrestrial radionuclides (226Ra, 232Th and 40K) and heavy metals (Cr, Ni, Cu, Zn, Pb, Co) from soil samples of Una, Hamirpur and Kangra districts of Himachal Pradesh (India). The 226Ra, 232Th, 40K activity concentration in the studied region has been varied from 8 to 3593 Bq kg-1; 21-370 Bq kg-116; 62-7130 Bq kg-1 respectively. High disequilibrium factor (238U/226Ra) depicts that uranium constantly migrates from clay oxidizing zone and getting precipitated with enrichment towards south. An attempt has been made to correlate the distribution of these radionuclides and heavy metals with geology and rock type formation of Siwalik region. The concentration of Pb, Zn and Co was found higher than Indian average background value. Multiple radiological and pollution indices have been estimated for proper risk analysis in the studied region. The annual effective dose in studied region is lower than the recommended limit of 1.0 mSv a-1. The obtained geo-accumulation index and enrichment factor indicated that the sites located in the Hamirpur and Kangra regions were moderately contaminated with Pb and Co. The Nemerow pollution index and contamination security index suggested that almost 45% sites were slightly to moderately polluted. The non-carcinogenic and carcinogenic risks for both children and adults were within acceptable limits.
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Affiliation(s)
- Pragya Pandit
- Atomic Minerals Directorate for Exploration and Research, New Delhi, 110066, India.
| | - Preeti Mangala
- Atomic Minerals Directorate for Exploration and Research, New Delhi, 110066, India
| | - Atul Saini
- Department of Geography, Delhi School of Economics, University of Delhi, Delhi, 110007, India
| | - Pargin Bangotra
- Material Research Laboratory, Deptt of Physics, SBSR, Sharda University, Greater Noida, 201310, India
| | - Vinod Kumar
- Department of Botany, Government Degree College, Ramban, 182144, India
| | - Rohit Mehra
- B. R. Ambedkar National Institute of Technology, Jalandhar, 144011, India
| | - Dibakar Ghosh
- Atomic Minerals Directorate for Exploration and Research, New Delhi, 110066, India
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Wu H, Liu Y, Liu Y, Wei Q, Yang B. Efficiency calibration of airborne γ-ray spectrometer using sourceless efficiency calibration method. J Radioanal Nucl Chem 2019. [DOI: 10.1007/s10967-019-06717-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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