Sergio Cañete

University of Malaga | UMA · Central Research Services (SCAI)

The monthly depositional fluxes of 7 Be, 210 Pb and 40 K were measured at Malaga, (Southern Spain) from 2005 to 2018. In this work, the depositional fluxes of these radionuclides are investigated and their relations with several atmospheric variables have been studied by applying two popular machine learning methods: Random Forest and Neural Networ...

The present study focuses on the simultaneous analysis of metallic species and radionuclide data from January 2009 to December 2011 in the dust deposited on filters in Málaga (Spain). Some metallic elements (Ca, Fe, K, Mg, Na, Zn, Pb, Cu, Ni) and radionuclides (7 Be and 210 Pb) have been determined by inductively coupled plasma-mass spectroscopy an...

CAÑETE, S.; GORDO, E.; IÑIGUEZ, C.; PÉREZ, M.; PASTOR, J. M.; DUEÑAS, M. C. & RUIZ-CRUCES, R. Diagnosis and remediation measures for high concentrations of radon in single-family house in southern Spain. J. health med. sci., 5(3):161-166, 2019. ABSTRACT: For years there has been an important concern and interest in the scientific community due to e...

The information systems departments of European health services have the challenge of creating a dose record and reporting system of doses from medical procedures for its inclusion in the patient's medical history, in compliance with Directive 2013/59 Euratom, which determines the obligation to manage the measurement and evaluation of the doses as...

The vadose air in the surrounding of Nerja cave presents high CO2-contents (up to 60,000 ppm). The gas injection tests let to identify connections between points within a heterogeneous karst network. In this work, it has been confirmed the connection between wells in an experimental site, and established a mean 222Rn value in the vadose zone that i...

GORDO, E; IÑIGUEZ, C; CAÑETE, S; DUEÑAS, C.; FERNÁNDEZ, M. C.; JIMÉNEZ, C.; LÓPEZ GORDILLO, F. J.; CARMONA, R.; PASTOR, J. M.; PÉREZ, M. & RUIZ-CRUCES, R. Radionuclides in arctic marine macroalgae from Svalbard achipelago. J. health med. sci., 4(3):207-210, 2018. ABSTRACT: Seaweeds are known to be useful environmental bioindicators since they bioac...

Variations of gross alpha and beta atmospheric radioactivity have been analyzed in Málaga (Spain) focusing on the influence of local meteorology and air mass origin during 2012–2015. Air mass origin and their features, as well as the airborne particulate levels play a critical role in atmospheric radioactive aerosol concentrations. African air mass...

Objectives To propose national diagnostic reference levels (DRLs) for interventional radiology and to evaluate the impact of the procedural complexity on patient doses. Methods Eight interventional radiology units from Spanish hospitals were involved in this project. The participants agreed to undergo common quality control procedures for X-ray sys...

The present study uses a back-trajectory analysis at multiple heights for better interpretation of the impact of the African dust outbreaks in the coastal Mediterranean city of Málaga (Spain), the southernmost large city in Europe. Throughout a 3-year period, 363 days were identified as dusty days by atmospheric transport models. During these event...

Concentrations of both gamma radionuclides as well as major ions in bulk deposition samples were measured monthly from January 2005–December 2013 and January 2007–December 2013 respectively. The gamma radionuclides present are 7Be, 210Pb and 40K (50 % of the samples), while ions in bulk deposition were dominated by Ca2+, Cl−, \({\text{SO}}_{4}^{2 -...

En el año 2011 se firmó un acuerdo específico entre el Consejo de Seguridad Nuclear y la Universidad de Málaga para la realización de una prospección sobre los procedimientos de radiodiagnóstico utilizados en los centros sanitarios españoles, su frecuencia y las dosis recibidas por los pacientes. Denominado Proyecto DOPOES (DOsis a la POblación por...

The relationship between the particulate matter in the atmosphere of Malaga and the origin of air masses with special attention to African intrusions was analyzed. The concentrations of PM10 and the activities of some radionuclides (7Be and 210Pb) as tracers of these intrusions are discussed. The origin of these radiotracers is completely different...

During a 4-year period (January 2009–December 2012), the 7Be, 210Pb, and 40K activity concentrations in airborne particulate matter were weekly determined at the Málaga (Spain) located in the southern Iberian Peninsula. Totally 209 polypropylene filters were analyzed in the mentioned period. In 100 % of the filters, 7Be and 40K activity concentrati...

Atmospheric 7Be activity concentrations were measured in Málaga (South Spain) during the period 1997–2007. Monthly concentrations of 7Be ranged between 2.47 and 8.12 mBq m-3 showing seasonal trend withmaxima in spring–summer time. Influence of solar activity, cosmic rays and aerosol optical depth on airborne 7Be was analyzed. Weak negative correlat...

Diffusive transport of neutral and charged solutes across a nanoporous alumina membrane (NPAM) with a pore size of 24 nm and interpore distance of 65 nm obtained by the two-step anodization method in sulphuric acid solution (Sf/NPAM sample) is studied. Diffusion experiments were performed with tritiated water (neutral solute) to demonstrate frictio...

Estimation of population doses in Spain from diagnostic procedures in radiology and nuclear medicine. In recent years, there has been a significant increase in the number of medical examinations performed using ionising radiations. For this reason the European Commission took the initiative of estimating the dose to the population as a result of th...

Studies of radionuclide activities in aerosol particles provide a means for evaluating the integrated effects of transport and meteorology on the atmospheric loadings of substances with different sources. Measurements of aerosol mass concentration and specific activities of 7Be and 210Pb in aerosols at Málaga (36° 43′ 40″ N; 4° 28′ 8″ W) for the pe...

The radiometric composition of bulk deposition samples, collected monthly in a 5 year period (1 January 2005 until 31 December 2009) at a site located 30m a.s.l in Málaga (4°28′ 8″W; 36° 43′40″N), are analysed in this paper. Measurement of gross alpha, gross beta, artificial and natural radionuclide activity concentrations were carried out in 60 bu...

The activity concentrations of 226Ra, 232Th and 40K have been measured by gamma spectroscopy in samples of soil collected from the different zones of around Huelva (Spain). The average activity concentrations of 226Ra (Bqkg−1) in the active phosphogypsum (PG) stacks, unrestored and restored zones were 647, 573 and 83 respectively. The corresponding...

Concentration of 7Be and 210Pb in air were continuously monitored, using a high-volume air sampler and a high-resolution gamma-ray spectrometer, at the University of Málaga 36.7° N, 4.5° W from 2000 to 2006. The average monthly concentrations of 7Be ground level air were in the range of 0.36–14.9 mBq/m3 and exhibited one or two maxims in sprig and...

The bulk gross alpha, gross beta and (7)Be depositional fluxes were measured in Málaga (36.7 degrees N, 4.5 degrees W), a coastal Mediterranean station in the south of Spain for one whole year. In order to quantify the local variation of deposition rates, we have analysed the monthly results from two deposition collectors: a "pot "collector with a...

The measurements of radioactivity in drinking water enable us to determine the exposure of the population to radiation through their usual consumption of water. An intensive study of the water supply in the city of Malaga has been carried out to determine both the gross alpha-and gross beta-activity concentrations. Gamma spectrometry was used in or...

Phosphogypsum (PG) is a waste product of the phosphoric acid production process and contains, generally, high activity concentrations of uranium series radionuclides. It is stored in piles formed over the last 40 years close to the town of Huelva (Southwest of Spain). The very broad expanse of the PG piles (about 1200 ha) produces a local, but unam...

Stochastic models that estimate the ground-level ozone concentrations in air at an urban and rural sampling points in South-eastern Spain have been developed. Studies of temporal series of data, spectral analyses of temporal series and ARIMA models have been used. The ARIMA model (1,0,0) x (1,0,1)24 satisfactorily predicts hourly ozone concentratio...

The activity concentrations in air of 7Be and 210Pb have been investigated at Málaga (South-East Spain) from 1992 to 1999. In this period, the measurements yielded an average 7Be activity concentrations at ground level of 4.16 • 10-3 Bq m-3 and an average of 0.54 •10-3 Bq m-3 for 210Pb. The variation of the data with time was studied by time series...

The activity concentrations of 7Be and 210Pb were measured in Málaga, Southeastern Spain (36°43′40″N; 4°28′8″W) in aerosols, precipitation and dry fallout continuously and systematically for 8 years. At the same sampling point, aerosols were collected weekly on filters and monthly precipitation sampling was carried out to study deposition. The air...

222Rn concentrations in the air in one sampling point located in Nerja Cave (Spain) (3∘52′35″W36∘43′50″N) have been measured over one year, since July 2003–June 2004. 222Rn levels were continuously monitored using Alpha-Guard (Genitron instruments) equipment, model PQ2000PRO. Firstly, the aim of this study was to perceive the daily, monthly and sea...

Ozone concentrations were measured at two (urban and a rural) sites near the city of Málaga (Spain). The aim of this study was to determine the daily, monthly and seasonal variation patterns of ozone concentrations at both sites and to study the possible regional influences. The daily variations mostly have the usual features with the afternoon max...

During a 6 years period, the atmospheric activity concentrations of the long-lived 222Rn daughters and 7Be concentrations were measured at Málaga (36° 43′40″ N; 4° 28′8″ W). The concentration data of long-lived radon daughters and 7Be together with meteorological variables were used for a comprehensive regression analysis of weekly variation of rad...

Measurements of 7Be and 210Pb in atmospheric air (1 m above the ground) have been carried out each week over one and a half year period. The method used to determine 7Be and 210Pb activities is based on the total amount of radioactive aerosols filtered from the air. The activities of 7Be and 210Pb were determined by a hyper-pure germanium detector...

After the end of atmospheric nuclear weapons tests and after the Chernobyl accident, the deposition characteristics of radionuclides changed from a predominant wet deposition to the present resuspension mechanism characterised by predominant dry deposition. To study the deposition, monthly deposition data from a collector located at a coastal stati...

Ozone concentrations are valuable indicators of possible health and environmental impacts. However, they are also used to monitor changes and trends in the sources of both ozone and its precursors. For this purpose, the influence of meteorological variables is a confusing factor. This study presents an analysis of a year of ozone concentrations mea...

Measurements of gross-alpha and gross-beta activities were made every week during the years 1992-1997 for airborne particulate samples collected using air filters at a clear site. The data are sufficiently numerous to allow the examination of variations in time and by these measurements to establish several features that should be important in unde...

Measurements of gross-α and gross-β activities were made every week during the years 1992–1997 for airborne particulate samples collected using air filters at a clear site. The data are sufficiently numerous to allow the examination of variations in time and by these measurements to establish several features that should be important in understandi...

Concentrations of 226Ra and 222Rn have been analysed in most of the bottled waters commercially available in Spain. Concentrations up to about 600mBql-1 with a geometric mean of 12mBql-1 were observed for 226Ra. For 222Rn, a geometric mean of 1.2Bql-1 with values ranging from 0.22 to 52Bql-1 were measured. These values are compared with concentrati...

222Rn concentrations in the air in Nerja Cave (Spain) have been measured over 4yr and at four sampling points. Concentrations average 168Bqm-3 in the spring–summer when the temperature lapse rate provides a stable cave atmosphere. In the autumn–winter, the radon levels decrease to 48Bqm-3. 222Rn flux has also been measured for soils in the cave, wi...