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Thesis studies atmospheric PM contaminant in the Basque Autonomous Community
Date:10/1/2010

ked to contamination) is boosted, thus favouring the transport of contaminants from one place to another.

Ms Inza also observed that the PM10 levels studied in the CAV-EAE are generally inferior to those obtained at other stations on the Iberian Peninsula in similar environments. The researcher also showed that, as stipulated in the 2008/50/CE European Directive, the limit value of 40 g/m3 of PM10 annually was not passed in the four years in which these twelve Basque monitoring stations were studied. As regards the norm fixing 35 as the maximum number of times the limit value of 50 g/m3 of PM10 can be passed, it was observed that this has not always been complied with at some urban stations, probably due to the traffic factor. In any case, Ms Inza also explained that the same occurs in similar zones in the Iberian Peninsula and Europe.

Chemical composition, in order to know the sources of emission

An experimental phase was also effected during the research, carried out at a number of locations with different features in the CAV-EAE. In this various techniques were combined which enabled obtaining data about the chemical composition of the PM. Thanks to this information, Ms Inza was able to characterise the main sources of PM10 emission in these notable locations. For example, at the Molinao wharf (Pasaia) it was established that the unloading of scrap metal, mineral material (crustal), marine aerosol, road traffic and secondary regional origin traffic contributed to the PM10 mass. The same ocurred at the Sondika station with industrial 1 source (zinc and lead), industrial 2 source (steelmaking), crustal source, the marine factor, road traffic and regional sulphate.


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Contact: Amaia Portugal
a.portugal@elhuyar.com
34-943-363-040
Elhuyar Fundazioa
Source:Eurekalert

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