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DC Field | Value | Language |
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dc.contributor.author | Scerri, Mark M. | - |
dc.contributor.author | Weinbruch, Stephan | - |
dc.contributor.author | Delmaire, Gilles | - |
dc.contributor.author | Mercieca, Nadine | - |
dc.contributor.author | Nolle, Michael | - |
dc.contributor.author | Prati, Paolo | - |
dc.contributor.author | Massabo`, Dario | - |
dc.date.accessioned | 2022-11-10T16:48:17Z | - |
dc.date.available | 2022-11-10T16:48:17Z | - |
dc.date.issued | 2022 | - |
dc.identifier.citation | Scerri, M. M., Weinbruch, S., Delmaire, G., Mercieca, N., Nolle, M., Prati, P., & Massabò, D. (2022). Exhaust and non-exhaust contributions from road transport to PM10 at a Southern European traffic site. Environmental Pollution, 316(1), 120569. | en_GB |
dc.identifier.uri | https://www.um.edu.mt/library/oar/handle/123456789/103580 | - |
dc.description.abstract | It is a well – established fact that road traffic is one of the main contributors to ambient levels of airborne particulate matter (APM). This study was carried out at a traffic site in which the PM10 levels are monitored all year round. A trend analysis of these levels revealed that over a decade there was no discernible trend, with the PM10 concentrations normally hovering around the EU limit values. In 2018, one of these limit values was exceeded. The contribution of traffic at the site was therefore investigated through a chemical speciation of 209 PM10 samples collected throughout this year. The speciation data were used in a source apportionment exercise in which the output of the PMF model was further refined using the lesser–known, constraint weighted non – negative matrix factorization (CW – NMF) model. This technique enabled the isolation of two factors clearly related to traffic, which were labelled as “exhaust contribution” (responsible for 3.4% of the PM10), “tire/brake wear contribution” (contributing 17% of the PM10). Additionally, a factor including both traffic resuspended dust and crustal material was also isolated and labelled “road dust/crustal” factor. The two contributors to the factor jointly contribute 18% to the PM10 and the contribution of the traffic resuspended dust was estimated at 7.3%. The traffic resuspended component of this factor together with the “tire/brake wear contribution” jointly make up the non-exhaust contribution of traffic – derived dust. Consonant with what has been known for quite some time, the exhaust fraction is the minor component of traffic PM10. It is therefore, clear that policies aimed at controlling traffic derived PM10 pollution at the receptor will have a minimal effect unless the non – exhaust emissions are adequately controlled. | en_GB |
dc.language.iso | en | en_GB |
dc.publisher | Elsevier Ltd. | en_GB |
dc.rights | info:eu-repo/semantics/restrictedAccess | en_GB |
dc.subject | Matrix analytic methods | en_GB |
dc.subject | Theory of constraints (Management) -- Case studies | en_GB |
dc.subject | Communication and traffic | en_GB |
dc.subject | Aerosols -- Environmental aspects | en_GB |
dc.subject | Waste gases | en_GB |
dc.subject | Roads -- Dust control -- Environmental aspects | en_GB |
dc.title | Exhaust and non-exhaust contributions from road transport to PM10 at a Southern European traffic site | en_GB |
dc.type | article | en_GB |
dc.rights.holder | The 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.reviewed | peer-reviewed | en_GB |
dc.identifier.doi | 10.1016/j.envpol.2022.120569 | - |
dc.publication.title | Environmental Pollution | en_GB |
Appears in Collections: | Scholarly Works - InsESEMP |
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Exhaust_and_non_exhaust_contributions_from_road_transport_to_PM10_at_a_Southern_European_traffic_site.pdf Restricted Access | 4.16 MB | Adobe PDF | View/Open Request a copy |
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