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Kurnaz A, Turhan Ş, Metin O, Altıkulaç A, Duran C. Evaluation of terrestrial radionuclide levels and concomitant radiological risks of bentonites used in many industries. INTERNATIONAL JOURNAL OF ENVIRONMENTAL HEALTH RESEARCH 2023; 33:1706-1715. [PMID: 36062411 DOI: 10.1080/09603123.2022.2120190] [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: 07/21/2022] [Accepted: 08/26/2022] [Indexed: 06/15/2023]
Abstract
Bentonite is a soft, porous, easily shaped, and absorbent material rich in aluminum, sodium, and potassium. Bentonite is a mineral widely utilized as drilling mud, ore pelletizing, absorbent/adsorbent, bleaching agent, water impedance, coating, and raw material in various industries. In this study, radiometric measurements of 90 bentonite samples collected from 21 quarries in Turkey were performed using gamma-ray spectrometry. The radiological hazards caused by indoor exposure to adults due to the utilization of bentonites as raw materials in the construction industry and outdoor external exposures to quarry workers were evaluated by estimating the activity concentration index, annual effective doses, and lifetime cancer risk. The average activity concentrations of 226Ra, 232Th and 40K measured in bentonite samples were found as (50 ± 5) Bq/kg, (76 ± 4) Bq/kg and (373 ± 19) Bq/kg, respectively. The evaluation results reveal that the bentonites examined could be safely utilized as raw materials.
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Affiliation(s)
- Aslı Kurnaz
- Department of Physics, Faculty of Science and Letters, University of Kastamonu, Kastamonu, Turkey
| | - Şeref Turhan
- Department of Physics, Faculty of Science and Letters, University of Kastamonu, Kastamonu, Turkey
| | - Onur Metin
- Taşköprü Vocational School, Kastomunu University, Kastamonu, Turkey
| | - Aydan Altıkulaç
- Ula Ali Koçman Vocational School, Muğla Sıtkı Koçman University, Ula, Turkey
| | - Celalettin Duran
- Department of Geography, Science and Letters Faculty, Kastamonu University, Kastamonu, Turkey
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Olaoye MA, Mostafa MYA, Elegba D, Ademola AK, Kesinro RO, Khalaf H. Assessment of natural radiation in contaminated automobile workshop soils. Appl Radiat Isot 2023; 196:110769. [PMID: 36921431 DOI: 10.1016/j.apradiso.2023.110769] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/20/2022] [Revised: 02/09/2023] [Accepted: 03/06/2023] [Indexed: 03/11/2023]
Abstract
The presented study aims to identify and quantify the natural radionuclides activity concentrations on the top and sub-soils around mechanic workshops in Ojo and Ijegun, Lagos, Nigeria. Based on these measured radionuclides activity concentrations, radiological hazard indices are assessed. Twenty oil-contaminated soil samples were collected, and the levels of natural radionuclides activity are measured by applying gamma spectrometry The measured radionuclides with authoritative regularity are linked with the natural decay series of 238U (226Ra) and 232Th as well as the series of non-decay 40K. The obtained results show that the mean radionuclides activity concentrations in the collected oil-contaminated soils samples are 14 ± 4 Bq kg-1, 105 ± 55 Bq kg-1, and 90 ± 33 Bq kg-1, for 226Ra, 232Th, and 40K respectively. It was founded that the 226Ra radionuclide is the lower present in the oil-contaminated soils samples. The radiological assessments were evaluated in terms internal hazard index (0.54), and external hazard index (0.55) both of which are below the UNSCEAR-2000 standard limit. Consequently, the radiological assessment indicated that long-time exposure to those radionuclide's strength confuses integral hazards.
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Affiliation(s)
- M A Olaoye
- Department of Physics, Faculty of Science, Lagos State University, Ojo, Lagos State, Nigeria
| | | | - D Elegba
- Department of Physics, Faculty of Science, Lagos State University, Ojo, Lagos State, Nigeria
| | - A K Ademola
- Department of Physical Sciences, College of Natural Science, Bells University of Technology, Ota, Ogun State, Nigeria
| | - R O Kesinro
- Department of Physics, Faculty of Science, Lagos State University, Ojo, Lagos State, Nigeria
| | - Hyam Khalaf
- Department of Physics, Faculty of Science, Minia University, 61519, Egypt.
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Evaluation of lifetime cancer risk arising from natural radioactivity in foods frequently consumed by people in Eastern of Turkey. J Radioanal Nucl Chem 2022. [DOI: 10.1007/s10967-022-08248-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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Abed NS, Monsif MA, Zakaly HMH, Awad HA, Hessien MM, Yap CK. Assessing the Radiological Risks Associated with High Natural Radioactivity of Microgranitic Rocks: A Case Study in a Northeastern Desert of Egypt. INTERNATIONAL JOURNAL OF ENVIRONMENTAL RESEARCH AND PUBLIC HEALTH 2022; 19:ijerph19010473. [PMID: 35010735 PMCID: PMC8744596 DOI: 10.3390/ijerph19010473] [Citation(s) in RCA: 9] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 08/18/2021] [Revised: 09/20/2021] [Accepted: 09/30/2021] [Indexed: 11/25/2022]
Abstract
This study aimed to evaluate the radiological hazards of uranium (238U), thorium (232Th), and potassium (40K) in microgranitic rocks from the southeastern part of Wadi Baroud, a northeastern desert of Egypt. The activity concentrations of the measured radionuclides were determined by using a gamma-ray spectrometer (NaI-Tl-activated detector). The mean (238U), (232Th), and (40K) concentrations in the studied rocks were found to be 3680.3, 3635.2, and 822.76 Bq/kg, respectively. The contents in these rocks were elevated, reaching up to 6.3 wt%. This indicated the alkaline nature of these rocks. The high ratios of Th/U in the mineralized rocks could be related to late magmatic mineralization, suggesting the ascent of late magmatic fluids through weak planes such as faults and the contact of these rocks with older granites. The present data were higher than those of the United Nations Scientific Committee on the Effects of Atomic Radiation (UNSCEAR) guideline limits. All the radiological hazard results indicated high human health risks. This confirmed that this area is not radiologically safe, and care must be taken when working in this area. This study showed that the area under investigation had high U content suitable for uranium extraction that could be used in the nuclear fuel cycle.
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Affiliation(s)
- Neveen S. Abed
- Geochemical Exploration Department, Nuclear Materials Authority, El-Maadi, Cairo P.O. Box 530, Egypt; (N.S.A.); (M.A.M.)
| | - Mohamed Abdel Monsif
- Geochemical Exploration Department, Nuclear Materials Authority, El-Maadi, Cairo P.O. Box 530, Egypt; (N.S.A.); (M.A.M.)
| | - Hesham M. H. Zakaly
- Institute of Physics and Technology, Ural Federal University, 620002 Yekaterinburg, Russia
- Physics Department, Faculty of Science, Al-Azhar University, Assiut Branch, Assiut 71524, Egypt
- Correspondence: or (H.M.H.Z.); or (C.K.Y.)
| | - Hamdy A. Awad
- Institute of Earth Sciences, Southern Federal University, Zorge St., 40, 344090 Rostov-on-Don, Russia;
- Geology Department, Faculty of Science, Al-Azhar University, Assuit Branch, Assuit 71524, Egypt
| | - Mahmoud M. Hessien
- Department of Chemistry, College of Science, Taif University, P.O. Box 11099, Taif 21974, Saudi Arabia;
| | - Chee Kong Yap
- Department of Biology, Faculty of Science, Universiti Putra Malaysia (UPM), Serdang 43400, Malaysia
- Correspondence: or (H.M.H.Z.); or (C.K.Y.)
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Gezer F, Turhan Ş, Ufuktepe Y. Radiometric analysis of micas used in many industries and evaluation of radiological hazards. RADIOCHIM ACTA 2021. [DOI: 10.1515/ract-2021-1019] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Abstract
Abstract
Mica group minerals have been utilized in various industries such as paint, cement, rubber, plastic, paper, automotive, cosmetics, textile, etc. due to their unique electrical, thermal, and mechanical properties. In this study, the radiometric properties of 58 mica samples collected from three quarries operated commercially in Turkey were investigated using gamma-ray spectroscopy with an HPGe detector. The average activity concentrations of 226Ra, 232Th, and 40K analyzed in mica samples were found as 12, 44, and 2763 Bq kg−1, respectively. The radon emanation coefficient and radon mass exhalation rate of mica samples varied from 4 to 22% with an average of 10% and 0.4–5.9 µBq kg−1 s−1 with an average of 2.6 µBq kg−1 s−1, respectively. The radiological hazard caused by the utilization of mica samples as raw materials in the cement and concrete industry was evaluated for adults by calculating the gamma index and annual effective dose due to external exposure indoor. The study results revealed that there are no significant radiological hazards associated with the utilization of mica samples as building raw materials.
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Affiliation(s)
- Ferhat Gezer
- Department of Physics , Faculty of Science and Letters, Cukurova University , 01330 Adana , Turkey
| | - Şeref Turhan
- Department of Physics , Faculty of Science and Letters, Kastomunu University , 37150 Kastamonu , Turkey
| | - Yüksel Ufuktepe
- Department of Physics , Faculty of Science and Letters, Cukurova University , 01330 Adana , Turkey
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Hanfi MY, Masoud MS, Ambrosino F, Mostafa MY. Natural radiological characterization at the Gabal El Seila region (Egypt). Appl Radiat Isot 2021; 173:109705. [DOI: 10.1016/j.apradiso.2021.109705] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/04/2021] [Revised: 03/09/2021] [Accepted: 03/22/2021] [Indexed: 11/28/2022]
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Okoro EE, Okolie AG, Sanni SE, Joel ES, Agboola O, Omeje M. Assessment of naturally occurring radiation in lithofacies of oil field in Niger Delta region and its possible health implications. JOURNAL OF ENVIRONMENTAL MANAGEMENT 2020; 264:110498. [PMID: 32250916 DOI: 10.1016/j.jenvman.2020.110498] [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: 01/10/2020] [Revised: 03/23/2020] [Accepted: 03/24/2020] [Indexed: 06/11/2023]
Abstract
The accumulation and increase in radionuclide activities of NORMs beyond permissible levels, will lead to health hazards and environmental damages if proper measures are not taken to control their occurrence as well as protect the lives of drillers and the environment. Therefore, evaluations and risk assessments of subsurface lithofacies is inevitable in order to protect people and the environment. Lack of existing Federal environmental regulations to address the presence of NORMs in oil and gas exploration activities in Nigeria, gives credence to this study. However, before these regulations can be developed, adequate research knowledge is needed to better understand the occurrence and distribution of Norms in subsurface lithofacies, as well as quantify the hazards posed by these NORMs to the people in the environment. This study then investigates the occurrence of natural radiation in lithofacies of an oil field region in Niger-Delta area using Hyper Germanium (HPGe) detector. Six (6) samples of different subsurface layers of lithofacies were collected during drilling, and analyzed. The results showed that the measured activity concentration of 238U decreased as the depth increased; the activity concentration of 232Th ranged between 11.8 ± 9.29 Bq/kg and 23.1 ± 8.43 Bq/kg, while the activity concentration of 4 K ranged from 161.8 Bq/kg to 245.4 Bq/kg. The estimated radiological risks such as absorbed dose rates, annual effective dose rates, radium equivalent index, external hazard index and internal hazard index were determined. The mean values for the estimated radiological parameters were 12.32 nGyh-1, 15.1049 Svy-1, 44.7720 Bqkg-1, 0.1209 and 0.1318 respectively. The gamma index estimated for the samples used were within the standard values recommended by Unscear, 2000. Significantly, this study reveals a distinctive decrease in 232Th activity with depth within the area under consideration. Based on the compared results, the measured radioactive concentrations and estimated radiological risks were below international reference values.
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Affiliation(s)
- Emmanuel E Okoro
- Petroleum Engineering Department, Covenant University Ota, Nigeria.
| | | | - Samuel E Sanni
- Chemical Engineering Department, Covenant University Ota, Nigeria
| | | | - Oluranti Agboola
- Chemical Engineering Department, Covenant University Ota, Nigeria
| | - Maxwell Omeje
- Physics Department, Covenant University Ota, Nigeria
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Kurnaz A, Turhan Ş, Hançerlioğulları A, Gören E, Karataşlı M, Altıkulaç A, Erer AM, Metin O. Natural radioactivity, radon emanating power and mass exhalation rate of environmental soil samples from Karabük province, Turkey. RADIOCHIM ACTA 2019. [DOI: 10.1515/ract-2019-3188] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Abstract
Abstract
In this study, content of natural radionuclides (226Ra, 232Th and 40K) and radon emanating power and radon mass exhalation rate of surface soil samples collected around industrial province Karabük in which the first iron steel plant was built in 1937 were determined by high-resolution γ-ray spectrometry with a high purity germanium detector. The average activity concentration of 226Ra, 232Th and 40K in soil samples were measured as 30 ± 2, 28 ± 2 and 251 ± 20 Bq kg−1, respectively. The average value of radon emanating power and mass exhalation rate of soil samples were found as 31 % and 19 μBq kg−l s−l, respectively. Assessment of possible radiation hazards to the people due to external exposure was done by estimating the outdoor absorbed gamma dose rate in the air at 1 m above the soil, the corresponding annual effective dose, and the excess lifetime cancer risk. The average outdoor gamma dose rate, annual effective dose, and lifetime cancer risk were estimated as 41 nGy h−1, 51 μSv y−1 and 2.0 × 10−4, respectively. A comparison of the activity and radiological results obtained for the studied samples with the corresponding worldwide average values indicates that the results are below the world average values.
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Affiliation(s)
- Aslı Kurnaz
- Department of Physics, Faculty of Science and Letters , Kastamonu University , 37150 Kastamonu , Turkey
| | - Şeref Turhan
- Department of Physics, Faculty of Science and Letters , Kastamonu University , 37150 Kastamonu , Turkey , Phone: +90 366 280 19 40, Fax: +90 366 215 49 69
| | - Aybaba Hançerlioğulları
- Department of Physics, Faculty of Science and Letters , Kastamonu University , 37150 Kastamonu , Turkey
| | - Elif Gören
- Department of Physics, Faculty of Science and Letters , Cukurova University , 01330 , Adana , Turkey
| | - Muhammet Karataşlı
- Beykent University, Faculty of Engineering and Architecture , Department of Electronics and Communication Engineering , Sarıyer, İstanbul , Turkey
| | - Aydan Altıkulaç
- Muğla Sıtkı Koçman University , Ula Ali Koçman Vocational School 48640 Ula , Muğla , Turkey
| | - Ahmet M. Erer
- Department of Physics, Faculty of Science , Karabük University , 78050 Karabük , Turkey
| | - Onur Metin
- Taşköprü Vocational School , Kastamonu University , Taşköprü , Kastamonu , Turkey
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