Please use this identifier to cite or link to this item: https://www.um.edu.mt/library/oar/handle/123456789/91187
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dc.contributor.authorVella, Alfred J.-
dc.contributor.authorCallus, Joe-
dc.contributor.authorGalea, Herman-
dc.contributor.authorVella, Daniel A.-
dc.date.accessioned2022-03-11T14:04:54Z-
dc.date.available2022-03-11T14:04:54Z-
dc.date.issued2002-
dc.identifier.citationVella, A. J., Callus, J., Galea, H., & Vella, A. D. (2002). Air quality. In Axiak, V., Gauci, V., Mallia, A., Mallia, E., Schembri, P. J., Vella, A. J., & Vella, L. (Eds.), State of the Environment Report for Malta 2002 (pp. 525-559). Ministry for Home Affairs and the Environment, Malta.en_GB
dc.identifier.urihttps://www.um.edu.mt/library/oar/handle/123456789/91187-
dc.description.abstractSince the writing of the first State of Environment Report in 1998, significant progress has been made in the generation of detailed knowledge regarding urban air quality in Malta. This was mainly due to the fact that, in 1999, the Environment Protection Department (EPD) initiated a National Air Monitoring Programme with the aims of providing an assessment of air quality based on scientific criteria and enabling urban air pollution mapping in the Maltese Islands.en_GB
dc.description.abstractThe monitoring programme addressed both the determination of the spatial distribution of air pollutants as well as their temporal variation (i.e. to establish how pollutant levels or concentrations changed with time in any given place). For spatial distribution mapping, diffusion tubes are used that are exposed for a period in selected areas in Malta and Gozo.en_GB
dc.description.abstractThirty-one sites, including four in Gozo were selected for such monitoring as shown in Table 9.1 and Figure 9.1. Four streets in each locality were chosen and the average value of the pollutant concentrations in each of these was taken as representative of the area. The air pollutants measured by this technique were sulphur dioxide, nitrogen dioxide, ozone and the hydrocarbons benzene, toluene, ethylbenzene and xylenes (BTEX). The diffusion tube samplers are exposed at the sites for a measured period and are then collected and sent to an analytical laboratory for chemical work up. This technique provides average concentrations over the measurement period. For temporal variation measurements, a mobile air pollution station was used equipped with apparatus that allows measurement of the following pollutants: sulphur dioxide, nitrogen monoxide and nitrogen dioxide (collectively referred to as NOx), ozone, carbon monoxide and also airborne particulate matter with aerodynamic diameter less than 10 micrometres (PM10). The mobile station is placed in a particular street for a period of one week where it collects readings of the five pollutants continuously for the duration of the period. The station is then moved to another street and more data is similarly collected. The mobile station was used to measure pollutants in similar localities to those involved in the diffusion tube measurements.en_GB
dc.language.isoenen_GB
dc.publisherMinistry for Home Affairs and the Environment, Maltaen_GB
dc.rightsinfo:eu-repo/semantics/openAccessen_GB
dc.subjectAir -- Pollutionen_GB
dc.subjectAir quality -- Maltaen_GB
dc.subjectPollution -- Maltaen_GB
dc.subjectEnvironmental economics -- Maltaen_GB
dc.subjectEnvironmental management -- Maltaen_GB
dc.subjectEnvironmental protection -- Planningen_GB
dc.subjectEnvironmental responsibility -- Maltaen_GB
dc.titleAir qualityen_GB
dc.title.alternativeState of the Environment Report for Malta 2002en_GB
dc.typereporten_GB
dc.rights.holderThe copyright of this work belongs to the author(s)/publisher. The rights of this work are as defined by the appropriate Copyright Legislation or as modified by any successive legislation. Users may access this work and can make use of the information contained in accordance with the Copyright Legislation provided that the author must be properly acknowledged. Further distribution or reproduction in any format is prohibited without the prior permission of the copyright holder.en_GB
dc.description.reviewedpeer-revieweden_GB
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