The relationship between indoor and outdoor levels of PM10 and its chemical composition at schools in a coastal region in Spain
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Otros documentos de la autoría: Pallarés Porcar, Susana; Gómez, Eva T.; Martínez, África; Jordán Vidal, Manuel Miguel
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INVESTIGACIONMetadatos
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The relationship between indoor and outdoor levels of PM10 and its chemical composition at schools in a coastal region in SpainFecha de publicación
2019-08Editor
ElsevierCita bibliográfica
PALLARÉS, Susana, et al. The relationship between indoor and outdoor levels of PM10 and its chemical composition at schools in a coastal region in Spain. Heliyon, 2019, vol. 5, no 8, p. e02270.Tipo de documento
info:eu-repo/semantics/articleVersión de la editorial
https://www.sciencedirect.com/science/article/pii/S2405844019359304Versión
info:eu-repo/semantics/publishedVersionPalabras clave / Materias
Resumen
PM10 levels and its chemical composition were studied inside and outdoor of seven primary schools (3 in urban
environment, 3 in industrial environment, 1 in rural environment) located in the Mediterranean coast in ... [+]
PM10 levels and its chemical composition were studied inside and outdoor of seven primary schools (3 in urban
environment, 3 in industrial environment, 1 in rural environment) located in the Mediterranean coast in an area
with an important industrial nucleus dedicated to the treatment of raw mineral materials. The main objective of
this work is a comparison between these levels obtained inside and outside schools and also asses the influence of
various natural and anthropogenic emission sources on particles concentrations found inside. The indoor airborne
samples were collected using RespiCon TM. In the three outdoor sampling stations was used a minivol air sampler
type 3.1 LVS of Derenda. PM10 Chemical composition was obtained by ICP-MS (elements) and ion chromatography
The ratio I/O (indoor/outdoor) has been calculated taking into account only the samples taken in the same
conditions. In all schools the ratio I/O for PM10 was greater than unity (between 1.3 and 7.8), indicating that
existed significant indoor sources of these particles. In the three schools located in the industrial environment
were collected PM10 samples inside and outside in non-teaching periods. Comparing the values of I/O when the
classrooms were unoccupied with respect to the average value of these same schools when the classrooms are
occupied, the behaviour is different depending on the location. On the other hand, a sample in an industrial
school was obtained when some infrastructure works were being carried out outside of school. This caused a
significant increase in the concentration of particles in the interior (I/O ¼ 19.9). From the levels of As, Ni, Cd, Pb,
Al, B, Zn, Mg, Sb, F , ClO2-, NO3- and SO4
2- in PM10 inside and outside of each school, also the ratios I/O were
calculated. These chemical ratios I/O were higher than unity in all cases and generally higher than those recorded
in the case of PM10. Finally, Pearson correlation coefficients (r) between the elements and anions and the PM10,
and between the different elements and anions were calculated for the purpose of establishing the existence of
common emission sources. [-]
Publicado en
Heliyon, 2019, v. 5, issue 8Proyecto de investigación
Jaume I University, project "Pla de Promoció de la Investigació-Fundació Caixa Castelló-Bancaixa (P1⋅1B2005-18).Derechos de acceso
info:eu-repo/semantics/openAccess
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