1
|
de Barros Correia FL, Dos Santos Júnior JA, Vieira JW, Dos Santos Amaral R, Brayner Cavalcante Freire Bezerra M, Herrero Fernández Z, Santos JMDN, Dos Santos YM, Barbosa da Silva KR, da Silva LM. Radioanalytical models applied to the investigation of caesium signatures in sugar samples. Food Addit Contam Part A Chem Anal Control Expo Risk Assess 2023; 40:404-414. [PMID: 36662517 DOI: 10.1080/19440049.2023.2169360] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/21/2023]
Abstract
The presence of anthropogenic radioisotopes in the environment may be due to inappropriate discards, nuclear tests and accidents, which requires and justifies constant monitoring to ensure the safety of nuclear applications. The radiometric analysis is a necessary condition for exporting sugar for world consumption. The investigation of 134Cs and 137Cs in a sugar matrix is required to predict radiometric anomalies. This work aimed to standardise a semi-empirical radiometric model to characterise and quantify caesium isotopes in sugar. The research was carried out with high-resolution gamma spectrometry, a non-destructive method. The results were applied to the analysis of different types of sugar for export. The models allowed us to determine with excellent resolution the minimum quantifiable activities of 0.74 Bq kg-1 and 0.48 Bq kg-1 for 134Cs and 137Cs, respectively, which are lower than 600 Bq kg-1, reference values adopted by the EU for isotopes in food.
Collapse
Affiliation(s)
- Filipe Lopes de Barros Correia
- Radioecology Group, Department of Nuclear Energy, Center of Technology and Geosciences, Federal University of Pernambuco, Avenida Professor Luiz Freire, Recife, Brazil
| | - José Araújo Dos Santos Júnior
- Radioecology Group, Department of Nuclear Energy, Center of Technology and Geosciences, Federal University of Pernambuco, Avenida Professor Luiz Freire, Recife, Brazil
| | - José Wilson Vieira
- Radioecology Group, Department of Nuclear Energy, Center of Technology and Geosciences, Federal University of Pernambuco, Avenida Professor Luiz Freire, Recife, Brazil.,Numerical Dosimetry Group, Federal Institute of Education, Science and Technology of Pernambuco, Recife, Brazil
| | - Romilton Dos Santos Amaral
- Radioecology Group, Department of Nuclear Energy, Center of Technology and Geosciences, Federal University of Pernambuco, Avenida Professor Luiz Freire, Recife, Brazil
| | - Mariana Brayner Cavalcante Freire Bezerra
- Radioecology Group, Department of Nuclear Energy, Center of Technology and Geosciences, Federal University of Pernambuco, Avenida Professor Luiz Freire, Recife, Brazil
| | - Zahily Herrero Fernández
- Radioecology Group, Department of Nuclear Energy, Center of Technology and Geosciences, Federal University of Pernambuco, Avenida Professor Luiz Freire, Recife, Brazil.,Academic Center of the Agreste, Technology Center, Federal University of Pernambuco, Avenida Marielle Franco, Caruaru, Brazil
| | - Josineide Marques do Nascimento Santos
- Radioecology Group, Department of Nuclear Energy, Center of Technology and Geosciences, Federal University of Pernambuco, Avenida Professor Luiz Freire, Recife, Brazil.,Academic Center of the Agreste, Technology Center, Federal University of Pernambuco, Avenida Marielle Franco, Caruaru, Brazil
| | - Yasmin Marques Dos Santos
- Radioecology Group, Department of Nuclear Energy, Center of Technology and Geosciences, Federal University of Pernambuco, Avenida Professor Luiz Freire, Recife, Brazil
| | - Keyth Roslyn Barbosa da Silva
- Radioecology Group, Department of Nuclear Energy, Center of Technology and Geosciences, Federal University of Pernambuco, Avenida Professor Luiz Freire, Recife, Brazil
| | - Leandro Moreira da Silva
- Radioecology Group, Department of Nuclear Energy, Center of Technology and Geosciences, Federal University of Pernambuco, Avenida Professor Luiz Freire, Recife, Brazil
| |
Collapse
|
2
|
Bıyık R, Bingöldağ N, Ataksor B, Duhan F. RADIOLOGICAL ASSESSMENT OF NATURAL RADIOACTIVITY IN A URANIUM DEPOSIT AREA: KÖPRÜBAŞI, TÜRKIYE. RADIATION PROTECTION DOSIMETRY 2023; 199:134-145. [PMID: 36484650 DOI: 10.1093/rpd/ncac232] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/22/2022] [Revised: 10/05/2022] [Accepted: 10/03/2022] [Indexed: 06/17/2023]
Abstract
In this study, the results of environmental radioactivity studies conducted in Köprübaşı, Manisa district, where Türkiye's uranium mineral exploration and processing studies were carried out, are shared. Because this is a populated area, there is a need for radio ecological dosimetry assessment to investigate the possible risk to the population. The region where radiological monitoring is carried out is discussed in two parts as the areas where uranium mineral exploration is performed and the settlements close to these areas. It was observed that 714-4714 nGy/h values were obtained in the outdoor absorbed dose rate in air measurements taken in the areas where mineral exploration was performed and this value reached up to 22 857 nGy/h in open field mining areas. In the residential areas, it was recorded that the outdoor absorbed dose rate in air values ranged between 142 and 242 nGy/h and the indoor values ranged between 171 and 400 nGy/h. The world absorbed dose rate in air average values is 57 nGy/h (outdoor) and 75 nGy/h (indoor). The high 226Ra values in the radioactivity analyses of the soil samples draw attention. The mean values of the activity concentrations of the radionuclides 226Ra, 232Th and 40K in the soil samples are 3169, 55 and 802 Bq/kg and the world averages of these values are 35, 30 and 400 Bq/kg, respectively. It was determined that high 226Ra value in the soil in the areas close to the open field uranium mining area was passed on to the agricultural products. Radioactivity measurement results of drinking water samples did not exceed World Health Organization guidelines. According to the radon gas measurement results of 44 houses in Köprübaşı villages, the average radon concentrations in winter, spring, summer and autumn seasons were 72, 61, 50 and 55 Bq/m3, and the annual average value was 60 Bq/m3, respectively. Although these values are greater than the world average of 46 Bq/m3, they are below the recommended limit value (100 Bq/m3). By evaluating the data obtained, the total annual effective equivalent dose values (originating from outdoor-indoor absorbed dose in air, drinking water and indoor radon gas concentration) to which the people in the region are exposed were calculated as a 3.12 mSv.
Collapse
Affiliation(s)
- Recep Bıyık
- Turkish Energy, Nuclear and Mineral Research Agency, Nuclear Energy Research Institute, Istanbul, Türkiye
| | - Nesli Bingöldağ
- Turkish Energy, Nuclear and Mineral Research Agency, Nuclear Energy Research Institute, Istanbul, Türkiye
| | - Berna Ataksor
- Turkish Energy, Nuclear and Mineral Research Agency, Nuclear Energy Research Institute, Istanbul, Türkiye
| | - Fatma Duhan
- Turkish Energy, Nuclear and Mineral Research Agency, Nuclear Energy Research Institute, Istanbul, Türkiye
| |
Collapse
|
3
|
Morais VHT, de Luna Filho RLC, Dos Santos Júnior JA, Siqueira WN, Pereira DR, Lima MV, Fagundes Silva HAM, Joacir de França E, Amaral RDS, de Albuquerque Melo AMM. Use of Biomphalaria glabrata as a bioindicator of groundwater quality under the influence of NORM. JOURNAL OF ENVIRONMENTAL RADIOACTIVITY 2022; 242:106791. [PMID: 34894453 DOI: 10.1016/j.jenvrad.2021.106791] [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: 01/21/2021] [Revised: 10/26/2021] [Accepted: 12/06/2021] [Indexed: 06/14/2023]
Abstract
The Brazilian northeast is known to have sedimentary areas that contain minerals with anomalous concentrations of naturally occurring radioactive material (NORM). This characteristic can contribute to the elevation of natural radiation in the air, soil, and groundwater. Due to the inefficiency of drinking water distribution in this region, the use of water from wells has become essential for the population. Therefore, the objective of this research was to monitor the concentration of 238U and 232Th associated with biomonitoring with the species of mollusc Biomphalaria glabrata in waters of residential artesian wells, used for domestic consumption, in the municipalities of Abreu e Lima and São José do Sabugi, Brazil. To check the concentration of 238U and 232Th, ICP-MS was used. For biomonitoring, ecotoxicity techniques such as embryotoxicity and genotoxicity were used. The monitoring results confirmed high concentrations of natural uranium in one of the residential artesian wells, the data being above the limit allowed by the Ministry of Health of Brazil, whose study reference is the World Health Organization (WHO). The results of the bioassays showed embryotoxicity, with malformations and deaths in the exposed organisms being observed. The comet assay showed that groundwater caused changes in the mollusc's DNA, indicating genotoxicity. The bioassays suggest that embryotoxicity and genotoxicity were caused mainly by the high concentration of natural uranium. Therefore, the bioindicator B. glabrata was shown to be sensitive to the toxic effects of anomalous concentrations of NORM present in groundwater.
Collapse
Affiliation(s)
- Vinícius Henrique T Morais
- Department of Nuclear Energy, Center for Technology and Geosciences, Federal University of Pernambuco, 1000 Avenue Professor Luiz Freire, 50740-540, Recife, PE, Brazil.
| | - Ricardo Luiz C de Luna Filho
- Department of Nuclear Energy, Center for Technology and Geosciences, Federal University of Pernambuco, 1000 Avenue Professor Luiz Freire, 50740-540, Recife, PE, Brazil.
| | - José A Dos Santos Júnior
- Department of Nuclear Energy, Center for Technology and Geosciences, Federal University of Pernambuco, 1000 Avenue Professor Luiz Freire, 50740-540, Recife, PE, Brazil.
| | - Williams N Siqueira
- Department of Nuclear Energy, Center for Technology and Geosciences, Federal University of Pernambuco, 1000 Avenue Professor Luiz Freire, 50740-540, Recife, PE, Brazil; Departament of Biophysics and Radiobiology, Health Sciences Center, Federal University of Pernambuco, Avenue da Engenharia, 50670-420, Recife, PE, Brazil.
| | - Dewson R Pereira
- Departament of Biophysics and Radiobiology, Health Sciences Center, Federal University of Pernambuco, Avenue da Engenharia, 50670-420, Recife, PE, Brazil.
| | - Maíra V Lima
- Department of Nuclear Energy, Center for Technology and Geosciences, Federal University of Pernambuco, 1000 Avenue Professor Luiz Freire, 50740-540, Recife, PE, Brazil; Departament of Biophysics and Radiobiology, Health Sciences Center, Federal University of Pernambuco, Avenue da Engenharia, 50670-420, Recife, PE, Brazil.
| | - Hianna A M Fagundes Silva
- Departament of Biophysics and Radiobiology, Health Sciences Center, Federal University of Pernambuco, Avenue da Engenharia, 50670-420, Recife, PE, Brazil.
| | - Elvis Joacir de França
- Department of Nuclear Energy, Center for Technology and Geosciences, Federal University of Pernambuco, 1000 Avenue Professor Luiz Freire, 50740-540, Recife, PE, Brazil; Environmental Analysis Service (SEAMB), Northeast Regional Nuclear Science Center, 200 Avenue Professor Luiz Freire, 50.740-545, Recife, PE, Brazil.
| | - Romilton Dos S Amaral
- Department of Nuclear Energy, Center for Technology and Geosciences, Federal University of Pernambuco, 1000 Avenue Professor Luiz Freire, 50740-540, Recife, PE, Brazil.
| | - Ana Maria M de Albuquerque Melo
- Departament of Biophysics and Radiobiology, Health Sciences Center, Federal University of Pernambuco, Avenue da Engenharia, 50670-420, Recife, PE, Brazil.
| |
Collapse
|
4
|
α Espec-222 as a variant to the radon monitoring method using a solid state nuclear track. Appl Radiat Isot 2021; 178:109948. [PMID: 34536831 DOI: 10.1016/j.apradiso.2021.109948] [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: 12/04/2020] [Revised: 07/25/2021] [Accepted: 09/10/2021] [Indexed: 11/22/2022]
Abstract
Radon is important in indoor radiometry, where radiological impact is relevant. The improvement of low-cost methods makes it possible to maximize the monitored areas. Thus, a simple and robust monitoring device based on SSNTD CR-39 was designed. Detector conditions were standardized to reduce operational errors and increase productivity. The calibration factor by the slope method allowed efficiency greater than 93%. The monitoring system is satisfactory in terms of operation and performance, suitable for a wide range of radon monitoring situations.
Collapse
|
5
|
Kuz'micheva GM, Ivleva LI, Kaurova IA, Khramov EV, Dunaeva EE, Svetogorov RD, Rybakov VB. Local structural features and composition of the Bi 4Ge 3O 12:Dy 3+ crystals: effect of doping concentration. CrystEngComm 2020. [DOI: 10.1039/d0ce00729c] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Dy3+-doped Bi4Ge3O12 crystals possess different actual compositions and structural behavior of Dy3+ and Bi3+ ions depending on the initial Dy2O3 content.
Collapse
Affiliation(s)
| | - Liudmila I. Ivleva
- Prokhorov General Physics Institute, Russian Academy of Sciences
- Moscow 119991
- Russia
| | | | | | - Elizaveta E. Dunaeva
- Prokhorov General Physics Institute, Russian Academy of Sciences
- Moscow 119991
- Russia
| | | | | |
Collapse
|
6
|
Dos Santos Júnior JA, Dos Santos Amaral R, do Nascimento Santos JM, da Silva ANC, Rojas LAV, Milan MO, de Almeida Maciel Neto J, Bezerra JD, Araújo EEND. RADIOACTIVE DISEQUILIBRIUM AND DYNAMIC OF NATURAL RADIONUCLIDES IN SOILS IN THE STATE OF PERNAMBUCO-BRAZIL. RADIATION PROTECTION DOSIMETRY 2018; 182:448-458. [PMID: 29912424 DOI: 10.1093/rpd/ncy101] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/04/2018] [Accepted: 05/28/2018] [Indexed: 06/08/2023]
Abstract
Environmental radioactivity studies have been allowed establishing radiometric patterns in several area of the earth's crust. The work was conducted through radiometric analyses of regions with high levels of radionuclides and others with no history of anomalies. The research allowed establishing the radiometric profile of soils in the state of Pernambuco, Brazil, using a gamma spectrometry system. The specific activities ranged from 16.5 to 287.5 Bq kg-1 for 238U, 2.0 to 191.7 Bq kg-1 for 226Ra, 1.3 to 281.4 Bq kg-1 for 232Th and from 5.0 to 2600.9 Bq kg-1 for 40K. The results showed areas with low levels of ionizing radiation. However, for 40K some points presented high values, although non-representative of the number of samples investigated. The 226Ra/238U and 232Th/238U ratios allowed to determine the radioactive imbalance condition and to obtain information about aspects of soil availability providing an assessment of the dynamics of these radionuclides.
Collapse
Affiliation(s)
- José Araújo Dos Santos Júnior
- Grupo de Radioecologia, Departamento de Energia Nuclear do Centro de Tecnologia e Geociências da Universidade Federal de Pernambuco. Avenida Professor Luiz Freire, 1000, Cidade Universitária, Recife/PE, Brazil
| | - Romilton Dos Santos Amaral
- Grupo de Radioecologia, Departamento de Energia Nuclear do Centro de Tecnologia e Geociências da Universidade Federal de Pernambuco. Avenida Professor Luiz Freire, 1000, Cidade Universitária, Recife/PE, Brazil
| | - Josineide Marques do Nascimento Santos
- Grupo de Radioecologia, Departamento de Energia Nuclear do Centro de Tecnologia e Geociências da Universidade Federal de Pernambuco. Avenida Professor Luiz Freire, 1000, Cidade Universitária, Recife/PE, Brazil
| | - Arykerne Nascimento Casado da Silva
- Grupo de Radioecologia, Departamento de Energia Nuclear do Centro de Tecnologia e Geociências da Universidade Federal de Pernambuco. Avenida Professor Luiz Freire, 1000, Cidade Universitária, Recife/PE, Brazil
| | - Lino Angel Valcárcel Rojas
- Grupo de Radioecologia, Departamento de Energia Nuclear do Centro de Tecnologia e Geociências da Universidade Federal de Pernambuco. Avenida Professor Luiz Freire, 1000, Cidade Universitária, Recife/PE, Brazil
- Centro de Aplicaciones Tecnológicas y Desarrollo Nuclear (CEADEN) Calle 30 # 502, La Habana, Cuba
| | - Marvic Ortueta Milan
- Grupo de Radioecologia, Departamento de Energia Nuclear do Centro de Tecnologia e Geociências da Universidade Federal de Pernambuco. Avenida Professor Luiz Freire, 1000, Cidade Universitária, Recife/PE, Brazil
- Instituto Superior de Tecnologías y Ciencias Aplicadas (InSTEC), Ave. Salvador Allende # 1100 entre Infanta y Rancho Boyeros, Plaza de la Revolución, La Habana, Cuba
| | - José de Almeida Maciel Neto
- Grupo de Radioecologia, Departamento de Energia Nuclear do Centro de Tecnologia e Geociências da Universidade Federal de Pernambuco. Avenida Professor Luiz Freire, 1000, Cidade Universitária, Recife/PE, Brazil
| | - Jairo Dias Bezerra
- Grupo de Radioecologia, Departamento de Energia Nuclear do Centro de Tecnologia e Geociências da Universidade Federal de Pernambuco. Avenida Professor Luiz Freire, 1000, Cidade Universitária, Recife/PE, Brazil
| | - Eduardo Eudes Nóbrega de Araújo
- Grupo de Radioecologia, Departamento de Energia Nuclear do Centro de Tecnologia e Geociências da Universidade Federal de Pernambuco. Avenida Professor Luiz Freire, 1000, Cidade Universitária, Recife/PE, Brazil
| |
Collapse
|
7
|
Kuz'micheva G, Kaurova I, Ivleva L, Khramov E, Eistrikh-Geller P, Rybakov V, Chukhlovina T, Firstov S. Structure and composition peculiarities and spectral-luminescent properties of colorless and pink Bi4Ge3O12 scintillation crystals. ARAB J CHEM 2018. [DOI: 10.1016/j.arabjc.2017.07.015] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022] Open
|