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Makumbi T, Breustedt B, Raskob W. Parameter uncertainty analysis of the equivalent lung dose coefficient for the intake of radon in mines: A review. JOURNAL OF ENVIRONMENTAL RADIOACTIVITY 2024; 276:107446. [PMID: 38733660 DOI: 10.1016/j.jenvrad.2024.107446] [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: 01/16/2024] [Revised: 04/14/2024] [Accepted: 05/03/2024] [Indexed: 05/13/2024]
Abstract
Radon presents significant health risks due to its short-lived progeny. The evaluation of the equivalent lung dose coefficient is crucial for assessing the potential health effects of radon exposure. This review focuses on the uncertainty analysis of the parameters associated with the calculation of the equivalent lung dose coefficient attributed to radon inhalation in mines. This analysis is complex due to various factors, such as geological conditions, ventilation rates, and occupational practices. The literature review systematically examines the sources of radon and its health effects among underground miners. It also discusses the human respiratory tract model used to calculate the equivalent lung dose coefficient and the associated parameters leading to uncertainties in the calculated lung dose. Additionally, the review covers the different methodologies employed for uncertainty quantification and their implications on dose assessment. The text discusses challenges and limitations in current research practices and provides recommendations for future studies. Accurate risk assessment and effective safety measures in mining environments require understanding and mitigating parameter uncertainties.
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Affiliation(s)
- Thomas Makumbi
- Institute for Thermal Energy Technology and Safety, Karlsruhe Institute of Technology, Hermann-von-Helmholtz Platz 1, 76344, Eggenstein-Leopoldshafen, Germany.
| | - Bastian Breustedt
- Institute of Biomedical Engineering, Karlsruhe Institute of Technology, Fritz-Haber-Weg 1, D-76131, Karlsruhe, Germany
| | - Wolfgang Raskob
- Institute for Thermal Energy Technology and Safety, Karlsruhe Institute of Technology, Hermann-von-Helmholtz Platz 1, 76344, Eggenstein-Leopoldshafen, Germany
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Gázquez MJ, Paz Gómez DC, Alonso JJ, Pérez-Moreno SM, Ramos-Lerate I, Ruiz MC, Bolívar JP. A new methodology based on TRU resin to measure U-, Th-isotopes and 210Po by alpha-particle spectrometry. Talanta 2023; 253:123972. [PMID: 36208560 DOI: 10.1016/j.talanta.2022.123972] [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: 07/29/2022] [Revised: 09/23/2022] [Accepted: 09/24/2022] [Indexed: 12/13/2022]
Abstract
This report presents a new methodology to isolate and measure 210Po, as well as uranium and thorium isotopes. This new methodology reduces the standard time of operation, the minimum amount of chemical reagents and the quantity of resin used in comparison with other standard and well-established procedures for alpha spectrometry. Thus, the amount of chemicals reagent was lower than the amount used in other standard radiochemical processes: only 6 mL of 1 M HCl was used for the thorium elution, and 2 mL of H2O and 1 mL of Ammonium Oxalate (0.05 M) (3 mL in total) for the uranium elution. Likewise, many samples of various activities and materials (liquids and solids) were used to validate the method.
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Affiliation(s)
- Manuel Jesús Gázquez
- Department of Applied Physics, Marine Research Institute (INMAR), University of Cádiz, Cádiz, 11510, Spain.
| | - Daniela Carolina Paz Gómez
- Department of Integrated Sciences, Research Centre for Natural Resources, Health and Environment (RENSMA), University of Huelva, Huelva, 21007, Spain
| | - José Juan Alonso
- Department of Applied Physics, Marine Research Institute (INMAR), University of Cádiz, Cádiz, 11510, Spain
| | - Silvia María Pérez-Moreno
- Department of Integrated Sciences, Research Centre for Natural Resources, Health and Environment (RENSMA), University of Huelva, Huelva, 21007, Spain
| | - Inmaculada Ramos-Lerate
- Department of Applied Physics, Marine Research Institute (INMAR), University of Cádiz, Cádiz, 11510, Spain
| | - Melquiades Casas- Ruiz
- Department of Applied Physics, Marine Research Institute (INMAR), University of Cádiz, Cádiz, 11510, Spain
| | - Juan Pedro Bolívar
- Department of Integrated Sciences, Research Centre for Natural Resources, Health and Environment (RENSMA), University of Huelva, Huelva, 21007, Spain
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Sun C, Wang Y, Zhang L, Wang H, Guo Q, Xiao D, Liang J, Wang S. FIELD MEASUREMENT OF THE UNATTACHED FRACTION AND ACTIVITY CONCENTRATION RATIO OF RADON PROGENY IN TYPICAL DWELLINGS. RADIATION PROTECTION DOSIMETRY 2021; 197:125-134. [PMID: 34850219 DOI: 10.1093/rpd/ncab166] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/03/2021] [Revised: 10/18/2021] [Accepted: 10/25/2021] [Indexed: 06/13/2023]
Abstract
The unattached fraction (fp) and activity concentration ratio of radon progeny (${\boldsymbol C}_{{}{}^{\bf 218}\bf{Po}}:{\boldsymbol C}_{{}{}^{\bf 214}\bf{Pb}}:{\boldsymbol C}_{{}{}^{\bf 214}\bf{Bi}}$) are important for radon exposure dose evaluation. For getting these characteristic parameters in dwellings, a series of field measurement was carried out. For comparison, a semi-continuous measurement was carried out in an office room and outdoors. Results show that the average fp is 4.5% ± 2.2% and 3.8% ± 1.7% in city dwellings and in rural dwellings, respectively. The average activity concentration ratios are 1:0.94:0.70 for radon progeny and 1:0.07:0.06 for unattached radon progeny in city dwellings, while those in rural dwellings are 1:0.88:0.66 and 1:0.09:0.07. The average values of fp are 5.1% ± 0.9% and 5.4% ± 3.1% in the office room and in outdoors without significant difference. The average activity concentration ratios are 1:0.88:0.77 for radon progeny and 1:0.11:0.11 for unattached radon progeny in outdoors.
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