RT Journal Article
T1 Behavior of 222Rn, 220Rn and their progenies along a daily cycle for different meteorological situations: Implications on atmospheric aerosol residence times and Rn daughters' equilibrium factors
A1 Barba Lobo, Alejandro
A1 Gutiérrez-Alvarez, Isidoro
A1 Adame Carnero, José Antonio
A1 Gutiérrez de San Miguel Herrera, Enrique
A1 Bolívar Raya, Juan Pedro
AB The correct assessment of the radiological hazard from radon and daughters, external and internal doses, residence times and equilibrium factors, implies the need to properly determine 222Rn (radon), 220Rn (thoron) and their respective short-lived progenies (214Pb and 214Bi, and 212Pb and 212Bi, respectively), where the precise measurements of both progenies are quite complex due to their very short half-lives. In addition, it is important to study the temporal behavior of all these radionuclides along daily cycles. Therefore, the aim of this study was to analyze the temporal evolution of radon, thoron and their progenies, and of their activity ratios along daily cycles for two different meteorological situations (synoptic and mesoscale processes). Radon and thoron were measured using a radon monitoring system, while their respective progenies were collected onto atmospheric filters using an ASS-500 sampler, and then measured by gamma-ray spectrometry. Furthermore, the different relationships between the concentrations of radionuclides and the different meteorological variables of interest (temperature, ABL height, and speed and direction of the wind) were found. Finally, the atmospheric aerosol residence times and Rn daughters’ equilibrium factors were estimated for each sampling carried out along the two daily cycles, finding results consistent with previous studies.
PB Elsevier
SN 0304-3894
SN 1873-3336 (electrónico)
YR 2023
FD 2023-11
LK https://hdl.handle.net/10272/23935
UL https://hdl.handle.net/10272/23935
LA eng
NO Barba-Lobo, A., Gutiérrez-Álvarez, I., Adame, J. A., San Miguel, E. G., & Bolívar, J. P. (2024). Behavior of 222Rn, 220Rn and their progenies along a daily cycle for different meteorological situations: Implications on atmospheric aerosol residence times and Rn daughters’ equilibrium factors. In Journal of Hazardous Materials (Vol. 464, p. 132998). Elsevier BV. https://doi.org/10.1016/j.jhazmat.2023.132998
NO This research was partially funded by the University of Huelva andthe Operative FEDER Program-Andalusia 2014–2020 (Refs.: UHU-1255876, and UHU-202020), the European Regional Development Fundthrough the Research State Agency (Ref.: PID2020-116461RB-C21), theAndalusian Government (Ref.: PY20_00096), and the CSN (NuclearSafety Council) projects with Refs.: SUBV-4/2022 (CLIMATOR) andSUBV-4/2021 (EXRADON).
DS Repositorio Institucional de la Universidad de Huelva
RD 31 may 2026