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Browsing by Author "Gutiérrez Álvarez, Isidoro"
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A simple and precise methodology to determine particulate matter mass in atmospheric filters; validation and application cases
Barba Lobo, Alejandro; Gutiérrez Álvarez, Isidoro; Adame Carnero, José Antonio
; Bolívar Raya, Juan Pedro (Elsevier, 2022-11-01)
In the past decades, particulate matter (PM) measurements have been used extensively in atmospheric sciences, as it allows studying the evolution of tracers for different atmospheric processes and the effects of atmospheric ... -
Behaviour of heavy metals and natural radionuclides in the mixing of phosphogypsum leachates with seawater
Guerrero Márquez, José Luis; Pérez Moreno, Silvia María; Gutiérrez Álvarez, Isidoro; Gázquez González, Manuel Jesús; Bolívar Raya, Juan Pedro (Elsevier, 2021-01)
Phosphogypsum (PG) is disposed worldwide in large stacks usually placed in coastal zones, as in the case of Huelva (SW of Spain), where around 100 Mt of PG are stored on the salt marshes of the Tinto River estuary covering ... -
Influence of the accumulation chamber insertion depth to measure surface radon exhalation rates
Gutiérrez Álvarez, Isidoro; Guerrero Márquez, José Luis; Martín Domínguez, José Enrique; Adame Carnero, José Antonio; Bolívar Raya, Juan Pedro (Elsevier, 2020)
A common method to measure radon exhalation rates relies on the accumulation chamber technique. Usually, this approach only considers one-dimensional gas transport within the soil that neglects lateral diffusion. However, ... -
Radon transport events associated with the impact of a NORM repository in the SW of Europe
Gutiérrez Álvarez, Isidoro; Guerrero Márquez, José Luis; Martín Domínguez, José Enrique; Adame Carnero, José Antonio; Vargas, A.; Bolívar Raya, Juan Pedro (Elsevier, 2021)
Two radon measurement stations located to the north and south of a NORM (Naturally Occurring Radioactive Materials) repository of phosphogypsum (southwest of Europe) were used to monitor radon behavior during 2018. The ... -
Seasonal evolution of natural radionuclides in two rivers affected by acid mine drainage and phosphogypsum pollution
Guerrero Márquez, José Luis; Gutiérrez Álvarez, Isidoro; Hierro Gutiérrez, Almudena; Pérez Moreno, Silvia María; Olías Álvarez, Manuel; Bolívar Raya, Juan Pedro (Elsevier, 2021-02)
The Odiel and Tinto rivers show singular characteristics due to the significant acid mine drainage (AMD) generated in the first section of their basins and the phosphogypsum (PG) stacks located on their common estuary. AMD ... -
Study of radon exhalation rates and its influence on ambient radon concentrations in the city of Huelva
(Universidad de Huelva, 2020)According to United Nations Committee on Ionizing Radiation (UNSCEAR), radon gas is responsible for 42 % of the dose from natural radiation sources. The most common radon isotope, 222Rn, is emitted from materials with ... -
Use of a fuzzy qualitative model to reanalyze radon relationship with atmospheric variables in a coastal area near a NORM repository
Gutiérrez Álvarez, Isidoro; Aroba Páez, Javier; Martín Domínguez, José Enrique; Adame Carnero, José Antonio; Bolívar Raya, Juan Pedro (Elsevier, 2022-11)
A soft computing methodology, PreFuRGe (Predictive Fuzzy Rules Generator), was applied to study atmospheric radon in relation to other meteorological variables. This algorithm is based on fuzzy clustering and generates a ...
