Stella Moreno‐Grau

Universidad Politécnica de Cartagena

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J. Moreno

Universidad Politécnica de Cartagena

Belén Elvira‐Rendueles

Universidad Politécnica de Cartagena

J. Moreno-Clavel

University of Cartagena

L. Negral

Universidad Politécnica de Cartagena

A. García‐Sánchez

Instituto de Recursos Naturales y Agrobiología de Salamanca

Javier Bayo

Universidad Politécnica de Cartagena

Maria José Martínez-García

Sociedad Española de Medicina Interna

José M. Angosto

Universidad Politécnica de Cartagena

Alberto M. Torres‐Cantero

Instituto de Salud Carlos III

Jaime Mendiola

Universidad de Murcia

Cooperative Institutions

Universidad Politécnica de Cartagena

Universidad de Murcia

Consejo Superior de Investigaciones Científicas

Instituto de Salud Carlos III

University of Cartagena

Universidad Complutense de Madrid

Institute of Environmental Assessment and Water Research

University of Córdoba

Universidad de Granada

Universitat de Barcelona

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El saneamiento de la ciudad de Cartagena de Levante

DOAJ (DOAJ: Directory of Open Access Journals) (2020)

Stella Moreno‐Grau Sofía García-Moreno António Lafuente Juan Atenza Fernández

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Wind classification through cluster analysis for the development of predictive statistical models on atmospheric pollution

José M. Angosto Belén Elvira‐Rendueles Javier Bayo J. Moreno N. Vergara

This paper presents the results obtained after the use of a two-stage clustering analysis to get a classification scheme of surface winds. For this purpose, we have studied data from four meteorological towers within the city of Cartagena, a Mediterranean city located at Southeast of Spain', with a complex topography for wind circulation. Semi-hourly data for wind parameter have been used through different hours of the day, representing the daily wind behaviour. These values, projected on a X-Y axis have been processed thorough a factor analysis in order to avoid colineality. After the factor scores were calculated from the factorial matrix, a two-step cluster analysis procedure, using both hierarchical (average linkage) and non-hierarchical techniques (k-means) was performed. This classification scheme identified five distinct wind flows, which were represented for each meteorological station using wind roses. An homogeneous behaviour for each cluster within each meteorological station was determined. Once different wind flows were identified for this area, total daily pollen concentrations were studied, associated to each cluster situation. In this sense, statistically significant differences were determined. This analysis will be further used to develop refined regression models of pollen concentrations, in order to get better results than those obtained with the whole data.

Hierarchical clustering

Cold front

Factorial analysis

10.2495/air020631

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Factors Controlling The Variability Of TotalSuspended Particulate Matter And Heavy MetalsConcentrations In The Atmosphere Of Cartagena(Spain)

WIT Transactions on Ecology and the Environment (1997)

Stella Moreno‐Grau A. Perez Tornell José M. Angosto Javier Bayo J. Moreno

10.2495/air970621

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Electroanalytical Determination of Cadmium and Lead in Deciduous Teeth after Microwave Oven Digestion

Journal of AOAC International (2001)

Javier Bayo Stella Moreno‐Grau M José Martínez J. Moreno José M. Angosto

A method using differential pulse anodic stripping voltammetry after microwave oven digestion was developed for the simultaneous determination of Cd(II) and Pb(II) in the deciduous teeth of children. Each tooth was weighed; deposited in a 120 mL capped Teflon vessel with 5 mL 65% nitric acid, Suprapur analytical grade; and digested in a 2-step microwave oven for 15 min. The detection limits for Cd(II) and Pb(II) in the final solution were 0.078 and 0.323 microg/L, and the quantitation limits 0.394 and 1.613 microg/L, respectively, with a linearity range of 2 microg/L for Cd(II) and 23.3 microg/L for Pb(II). The sensitivity was 2.51 nA/microg-L and 1.37 nA/microg-L, for Cd(II) and Pb(II). The main advantages of this technique are a complete and satisfactory dissolution of the tooth material with the proposed microwave oven digestion procedure, without sample pretreatments, such as drying, ashing, or powdering. The voltammetric procedure proved to be well designed because of significant goodness of fit to a linear model, and the accuracy of the method was established as compared with standard reference material. The methodology has enabled us to study Cd(II) and Pb(II) in 371 deciduous teeth from school children in Cartagena, Spain.

Microwave oven

Ashing

Nitric acid

Microwave digestion

Standard addition

Digestion

Anodic Stripping Voltammetry

10.1093/jaoac/84.1.111

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Cannabis, an Emerging Aeroallergen in Southeastern Spain (Region of Murcia)

SSRN Electronic Journal (2022)

J. Moreno F. Aznar L. Negral Stella Moreno‐Grau Belén Elvira‐Rendueles

The evolution of the behaviour of the Cannabis taxon in the cities of Cartagena (1993-2020), Murcia (2010-2020) and Lorca (2010-2020) has been analysed. An attempt has been made to establish the origin of Cannabis pollen in the Region of Murcia to determine whether it is transported locally or from long distances based on air mass origins. Cannabis is an herbaceous, normally dioecious and anemophilous plant, which produces large quantities of pollen grains. It has been widely used for fibre (hemp), bird food (hempseed), essential oils and narcotics. The origin of Cannabis pollen grains has been established by calculating back trajectories at the altitudes of: 750, 1,500 and 2,500 m above mean sea level (m amsl); 350, 500 and 650 m amsl; and 10, 100 and 250 m amsl, using the HYSPLIT model. Considering this data, 29 days when Cannabis pollen potentially originated in Africa were identified in Cartagena, 19 days in Murcia and 15 days in Lorca. Of the remaining days, the air mass back trajectories showed local or regional pollen origins a total of 83 days in Cartagena, 61 days in Murcia and 57 days in Lorca. The presence of Cannabis in the bioaerosol of the Region of Murcia has been irregular, and it is considered a minority pollen type. However, from 2017 to 2020, concentrations increased, with a positive and significant trend of 90% in the Annual Pollen Index (API). The pollen season can be defined between June and August. This increase in the concentration of Cannabis pollen grains during this period coincides with an increase in local transport, suggesting the possibility of greater Cannabis cultivation in the study area.

Aeroallergen

10.2139/ssrn.4012469

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Aplicación del análisis de retrotrayectorias en Aerobiología

DOAJ (DOAJ: Directory of Open Access Journals) (2017)

L. Negral Belén Elvira‐Rendueles José M. Moreno Antonio-Javier García-Sánchez Stella Moreno‐Grau

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Effects of public health interventions on industrial emissions and ambient air in Cartagena, Spain

Environmental Science and Pollution Research (2008)

Lluís Cirera Miguel Rodríguez‐Barranco Joaquín Giménez Enrique Jiménez Marc Sáez

Criteria air contaminants

Factory (object-oriented programming)

10.1007/s11356-008-0091-3

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Citations (24)

Water Air & Soil Pollution (1997)

Stella Moreno‐Grau

Air filter

10.1023/a:1026442109576

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Aerobiologia (2000)

Stella Moreno‐Grau José M. Angosto Belén Elvira‐Rendueles Javier Bayo J. Moreno

Olea

Chenopodiaceae

Amaranthaceae

Aerobiology

10.1023/a:1007645307076

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¿Cuantificación de aeroalérgenos polínicos o recuentos de granos de polen?

DOAJ (DOAJ: Directory of Open Access Journals) (2017)

Stella Moreno‐Grau Belén Elvira‐Rendueles José M. Moreno

Existe un consenso generalizado sobre la necesidad de conocer la aeropalinologia local para poder comprender de modo adecuado la polinosis y realizar un diagnostico etiologico correcto. Por otro lado, los datos aerobiologicos suministrados por las redes de vigilancia permiten implantar medidas eficaces para evitar la exposicion. La caracterizacion aeropalinologica del aerosol atmosferico se realiza tradicionalmente mediante el muestreo volumetrico de las particulas en suspension en la atmosfera y posterior recuento de los tipos polinicos y fungicos presentes en las muestras. Uno de los metodos de muestreo mas utilizado se basa en el propuesto por Hirst en 1952. La correcta identificacion de los tipos polinicos y fungicos en las muestras requiere una formacion altamente especializada, para poder reconocer las caracteristicas morfologicas que permiten la adecuada adscripcion a un tipo polinico o fungico. A lo largo de las ultimas decadas del siglo XX fueron apareciendo en publicaciones cientificas datos que dirigieron el interes de los investigadores hacia la cuantificacion de los alergenos polinicos. Ademas, se ha senalado la falta de relacion encontrada entre los recuentos de granos de polen y los sintomas de la polinosis (rinitis, conjuntivitis y el asma). Por otro lado, existe una controversia alrededor del tamano de los granos de polen y su posibilidad de penetrar profundamente en las vias respiratorias. Este conjunto de evidencias propiciaron la introduccion del concepto de carga alergenica y la necesidad de su cuantificacion en el aerosol atmosferico. Son muchos los esfuerzos que se han realizado en este sentido, en este trabajo complementaremos nuestra experiencia en el tema con una revision de la bibliografia publicada, tratando de examinar si se puede contestar a la pregunta formulada por Beggs ya en 1998; ?que hay que considerar el polen o los alergenos polinicos?. El analisis del tema permite evidenciar que no siempre hay una correlacion estrecha entre los recuentos de granos de polen y la carga alergenica, en algunos casos este comportamiento es facilmente justificable y era previsible, en otros casos las razones no son tan evidentes. Sin embargo, hasta el momento no todos los aeroalergenos han podido ser cuantificados en el bioaerosol, por lo que todavia no nos encontramos en condiciones de sustituir los recuentos aeropalinologicos tradicionales y se requiere seguir investigando en este campo para poder desarrollar una metodologia de toma de muestras y cuantificacion de aeroalergenos que pueda ser implementada en las redes de vigilancia aerobiologica de la atmosfera. Siguiendo con la revision bibliografica realizada se apuntan otras opciones posibles para los estudios aerobiologicos y se recoge la opinion de los autores sobre sus posibilidades de futuro.

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