Bertin Pérez
Current Organizations / Institutes
The organizations/institutes from the scholar's latest article
Research Subjects
Bertin Pérez has a total of 24 co-authors. Here are the top co-authors by number of shared publications:
- Daniel Palacios
Pontificia Universidad Católica del Perú
6 shared publications - María Elena López Herrera
Departamento de Ciencias, Seccion Física, Pontificia Universidad Católica del Peru, San Miguel 15088, Peru
5 shared publications - Patrizia Pereyra
Departamento de Ciencias, Sección Física, Pontificia Universidad Católica del Perú, Lima 15088, Peru
4 shared publications - Jhonny Rojas
Facultad de Ciencias e Ingeniería, Departamento de Ciencias Exactas, Universidad Peruana Cayetano Heredia, Lima, Peru
2 shared publications - Laszlo Sajo-Bohus
Laboratorio de Física Nuclear, Universidad Simón Bolívar, Caracas 1080 A, Venezuela
2 shared publications - Alessandro Paola
Vigili del Fuoco, Corpo Nazionale dei Vigili del Fuoco, 10095 Torino, Italy
1 shared publication
Latest Publications
- Open Access
- 1 July 2025
- Published by Springer Nature in Scientific Reports
- Vol. 15 (1) , 1-20
Edaphic and meteorological parameters as determinants of radon exhalation and its environmental implication in Peruvian agroecosystems
Radon exhalation is a natural process by which atoms of the radioactive gas radon diffuse in the soil and then exhale to an indoor and/or outdoor environment. High radon concentration levels, possibly from high radon exhalation rate levels, can generate an impact on public health and environmental safety, particularly in agricultural areas where prolonged exposure may affect nearby populations. While studies have examined radon exhalation, few have focused on modeling its behavior in agricultural settings or identifying key environmental and soil parameters that influence its variation. This study addresses this gap by applying Artificial Neural Network (ANN) models and Monte Carlo methods. Three distinct approaches were developed based on radon exhalation measurements from four Peruvian agricultural regions, incorporating meteorological and soil physicochemical data. First, the ANN model determined environmental factors affecting radon exhalation, achieving \(\hbox {R}^{2}\) values of 0.7949 (training) and 0.7656 (validation). Second, simulations analyzed radon diffusion under varying wind conditions, assessing dispersion risks. Third, gamma radiation measurements quantified radon progeny contributions (\(2.82 \times 10^{-4} \pm 1.15 \times 10^{-5}\) efficiency) for soil moisture detection. This integrated methodology advances understanding of agricultural radon dynamics, supporting improved radiological safety protocols and soil monitoring techniques.- 1 July 2025
- Published by Springer Nature in Scientific Reports
- Vol. 15 (1) , 1-20
Open AccessEdaphic and meteorological parameters as determinants of radon exhalation and its environmental implication in Peruvian agroecosystems
Radon exhalation is a natural process by which atoms of the radioactive gas radon diffuse in the soil and then exhale to an indoor and/or outdoor environment. High radon concentration levels, possibly from high radon exhalation rate levels, can generate an impact on public health and environmental safety, particularly in agricultural areas where prolonged exposure may affect nearby populations. While studies have examined radon exhalation, few have focused on modeling its behavior in agricultural settings or identifying key environmental and soil parameters that influence its variation. This study addresses this gap by applying Artificial Neural Network (ANN) models and Monte Carlo methods. Three distinct approaches were developed based on radon exhalation measurements from four Peruvian agricultural regions, incorporating meteorological and soil physicochemical data. First, the ANN model determined environmental factors affecting radon exhalation, achieving \(\hbox {R}^{2}\) values of 0.7949 (training) and 0.7656 (validation). Second, simulations analyzed radon diffusion under varying wind conditions, assessing dispersion risks. Third, gamma radiation measurements quantified radon progeny contributions (\(2.82 \times 10^{-4} \pm 1.15 \times 10^{-5}\) efficiency) for soil moisture detection. This integrated methodology advances understanding of agricultural radon dynamics, supporting improved radiological safety protocols and soil monitoring techniques. - Open Access
- 2 April 2024
- Published by MDPI AG in Pollutants
- Vol. 4 (2) , 174-186
Mapping the Spatial Distribution of Natural Gamma Dose Rates as a Baseline Study in the Province of Asti, Italy
Natural background gamma rays and their effects on human health are essential components of both radiation protection and public concern. In the frame of these aspects, the mapping of the natural gamma dose rate values of the Province of Asti is given. The Asti Fire Brigade Command approved a project relating to the mapping of gamma radiation from the natural background in the territory of Asti. The project engaged both the Nuclear, Biological, Chemical, and Radiological (NBCR) and Topography Applied to Rescue (TAS) components of the Asti Command. Skilled personnel, comprising level 1 TAS operators for data collection and level 2 TAS operators for cartographic analysis, were deployed across the six working days. The methodology involved the use of two digital handheld radiation G-M detectors, in conjunction with a portable GPS unit, including the Global Mapper software. One of the significant findings of this study is the observation that the natural gamma dose rate levels were 201.25% higher in the streets of the city center compared to other areas, predominantly because the building materials in these locations contain a higher amount of natural radionuclides. The results indicated that the level of natural gamma dose rates in the studied region is close to the global average value.
- 2 April 2024
- Published by MDPI AG in Pollutants
- Vol. 4 (2) , 174-186
Open AccessMapping the Spatial Distribution of Natural Gamma Dose Rates as a Baseline Study in the Province of Asti, Italy
Natural background gamma rays and their effects on human health are essential components of both radiation protection and public concern. In the frame of these aspects, the mapping of the natural gamma dose rate values of the Province of Asti is given. The Asti Fire Brigade Command approved a project relating to the mapping of gamma radiation from the natural background in the territory of Asti. The project engaged both the Nuclear, Biological, Chemical, and Radiological (NBCR) and Topography Applied to Rescue (TAS) components of the Asti Command. Skilled personnel, comprising level 1 TAS operators for data collection and level 2 TAS operators for cartographic analysis, were deployed across the six working days. The methodology involved the use of two digital handheld radiation G-M detectors, in conjunction with a portable GPS unit, including the Global Mapper software. One of the significant findings of this study is the observation that the natural gamma dose rate levels were 201.25% higher in the streets of the city center compared to other areas, predominantly because the building materials in these locations contain a higher amount of natural radionuclides. The results indicated that the level of natural gamma dose rates in the studied region is close to the global average value.
- Open Access
- 30 May 2023
- Published by MDPI AG in Atmosphere
- Vol. 14 (6) , 952
Estimation of Indoor 222Rn Concentration in Lima, Peru Using LR-115 Nuclear Track Detectors Exposed in Different Modes
Radon is the main source of natural radioactivity, and its measurement is considered extremely important in radioprotection, given its relationship with the occurrence of lung cancer. In the last two years, measurements of this radioactive gas were carried out in Lima considering a grid of 5 km and the population density to determine the number of measurements to be carried out. Cellulose nitrate nuclear track detectors exposed in bare mode and diffusion chamber mode were used to estimate Rn concentrations. In diffusion chamber mode, non-commercial monitors and commercial monitors were used. The monitoring results are presented for 43 districts of the Lima Province whose population is approximately ten million inhabitants occupying a total area of 2655.15 km. Measurements were made obtaining an average concentration of 49 Bq·m using bare detectors and 66 Bq·m using non-commercial diffusion chambers. Average concentrations obtained by both detector exposure modes were below the maximum concentration recommended by the WHO. A radon (Rn) map was also obtained as a visual representation of the Rn levels in the Lima province using inverse distance weighting (IDW) interpolation.- 30 May 2023
- Published by MDPI AG in Atmosphere
- Vol. 14 (6) , 952
Open AccessEstimation of Indoor 222Rn Concentration in Lima, Peru Using LR-115 Nuclear Track Detectors Exposed in Different Modes
Radon is the main source of natural radioactivity, and its measurement is considered extremely important in radioprotection, given its relationship with the occurrence of lung cancer. In the last two years, measurements of this radioactive gas were carried out in Lima considering a grid of 5 km and the population density to determine the number of measurements to be carried out. Cellulose nitrate nuclear track detectors exposed in bare mode and diffusion chamber mode were used to estimate Rn concentrations. In diffusion chamber mode, non-commercial monitors and commercial monitors were used. The monitoring results are presented for 43 districts of the Lima Province whose population is approximately ten million inhabitants occupying a total area of 2655.15 km. Measurements were made obtaining an average concentration of 49 Bq·m using bare detectors and 66 Bq·m using non-commercial diffusion chambers. Average concentrations obtained by both detector exposure modes were below the maximum concentration recommended by the WHO. A radon (Rn) map was also obtained as a visual representation of the Rn levels in the Lima province using inverse distance weighting (IDW) interpolation. - 14 February 2023
- Published by Elsevier in Radiation Physics and Chemistry
- Vol. 207
Preliminary applications carried out in a new-build radon chamber using CR-39 detectors inside non-commercial diffusion chambers
- 14 February 2023
- Published by Elsevier in Radiation Physics and Chemistry
- Vol. 207
Preliminary applications carried out in a new-build radon chamber using CR-39 detectors inside non-commercial diffusion chambers
- 1 June 2020
- Published by Elsevier in Applied Radiation and Isotopes
- Vol. 160, 109112
Theoretical and experimental study of the LR-115 detector response in a non-commercial radon monitor
- 1 June 2020
- Published by Elsevier in Applied Radiation and Isotopes
- Vol. 160, 109112
Theoretical and experimental study of the LR-115 detector response in a non-commercial radon monitor
- 23 March 2020
- Published by Springer Nature in Journal of Radioanalytical and Nuclear Chemistry
- Vol. 324 (2) , 609-614
Nuclear track detector response to energetic heavy ions: study case
- 23 March 2020
- Published by Springer Nature in Journal of Radioanalytical and Nuclear Chemistry
- Vol. 324 (2) , 609-614
Nuclear track detector response to energetic heavy ions: study case
- Open Access
- 1 July 2019
- Published by Universidad Nacional de Colombia in Earth Sciences Research Journal
- Vol. 23 (3) , 171-183
Measurement of radon in soils of Lima City - Peru during the period 2016-2017
Lima City is situated on alluvial fan deposits of rivers flowing through geological formations that contain different levels of uranium. In this paper, a study is made on the average spatial and temporal behavior of radon gas in soils of Lima City. Radon concentration was determined using the LR-115 type 2 track detector during 36 periods, of 14 days each, in twenty holes distributed in the fifteen districts of Lima City. Radon concentration in soil pores ranged from 0.1 to 64.3 kBq/m3 with an average value of 5.6 kBq/m3. The average radon concentration in soil gas was about two times lower in winter than in the other seasons. High radon values during October/November 2017 were related to the earthquakes perceived in Lima City in that period. The highest radon concentrations were found in areas of alluvial deposits whose parental material has been removed from the Quilmaná and Huarangal volcanics by the Chillón and Huaycoloro Rivers. Soil gas radon concentrations were even higher in areas closer to volcanic and less distant from rivers. During the period of maximum flooding of the Chillón, Rímac and Lurín rivers, due to the natural phenomenon “El Niño Costero”, anomalous high soil radon concentrations were observed in most of the measurement sites located near rivers. These high radon values were associated with ground vibrations caused by rock and debris avalanches in rivers and creeks.
- 1 July 2019
- Published by Universidad Nacional de Colombia in Earth Sciences Research Journal
- Vol. 23 (3) , 171-183
Open AccessMeasurement of radon in soils of Lima City - Peru during the period 2016-2017
Lima City is situated on alluvial fan deposits of rivers flowing through geological formations that contain different levels of uranium. In this paper, a study is made on the average spatial and temporal behavior of radon gas in soils of Lima City. Radon concentration was determined using the LR-115 type 2 track detector during 36 periods, of 14 days each, in twenty holes distributed in the fifteen districts of Lima City. Radon concentration in soil pores ranged from 0.1 to 64.3 kBq/m3 with an average value of 5.6 kBq/m3. The average radon concentration in soil gas was about two times lower in winter than in the other seasons. High radon values during October/November 2017 were related to the earthquakes perceived in Lima City in that period. The highest radon concentrations were found in areas of alluvial deposits whose parental material has been removed from the Quilmaná and Huarangal volcanics by the Chillón and Huaycoloro Rivers. Soil gas radon concentrations were even higher in areas closer to volcanic and less distant from rivers. During the period of maximum flooding of the Chillón, Rímac and Lurín rivers, due to the natural phenomenon “El Niño Costero”, anomalous high soil radon concentrations were observed in most of the measurement sites located near rivers. These high radon values were associated with ground vibrations caused by rock and debris avalanches in rivers and creeks.
- 1 November 2018
- Published by Elsevier in Radiation Measurements
- Vol. 118, 36-42
A semi-empirical approach to estimate the parameters determining the LR-115 detector response in radon measurements
- 1 November 2018
- Published by Elsevier in Radiation Measurements
- Vol. 118, 36-42
A semi-empirical approach to estimate the parameters determining the LR-115 detector response in radon measurements