Title
Road dust emission sources and assessment of street washing effect
Author
Karanasiou, A.
Amato, F.
Moreno, T.
Lumbreras, J.
Borge, R.
Linares, C.
Boldo, E.
Alastuey, A.
Querol, X.
Publication year
2014
Abstract
Although previous studies report on the effect of street washing on ambient particulate matter levels, there is a lack of studies investigating the results of street washing on the emission strength of road dust. A sampling campaign was conducted in Madrid urban area during July 2009 where road dust samples were collected in two sites, namely Reference site (where the road surface was not washed) and Pelayo site (where street washing was performed daily during night). Following the chemical characterization of the road dust particles the emission sources were resolved by means of Positive Matrix Factorization, PMF (Multilinear Engine scripting) and the mass contribution of each source was calculated for the two sites. Mineral dust, brake wear, tire wear, carbonaceous emissions and construction dust were the main sources of road dust with mineral and construction dust being the major contributors to inhalable road dust load. To evaluate the effectiveness of street washing on the emission sources, the sources mass contributions between the two sites were compared. Although brake wear and tire wear had lower concentrations at the site where street washing was performed, these mass differences were not statistically significant and the temporal variation did not show the expected build-up after dust removal. It was concluded that the washing activities resulted merely in a road dust moistening, without effective removal and that mobilization of particles took place in a few hours between washing and sampling. The results also indicated that it is worth paying attention to the dust dispersed from the construction sites as they affect the emission strength in nearby streets. ©Taiwan Association for Aerosol Research.
Subject
Earth / Environmental
CAS - Climate, Air and Sustainability
ELSS - Earth, Life and Social Sciences
Urban Development
Emission
Built Environment
Madrid
Non-exhaust emissions
Resuspension
Road dust
Source apportionment
Spain
Air pollution
Brakes
Dust
Washing
Madrid
Re-suspension
Road dusts
Source apportionment
Spain
Roads and streets
air sampling
anthropogenic source
atmospheric pollution
dust
emission inventory
mobilization
resuspension
street canyon
urban atmosphere
Madrid [Spain]
Spain
To reference this document use:
http://resolver.tudelft.nl/uuid:dea189b1-a884-4129-a47e-c17cbbbc5ec1
DOI
https://doi.org/10.4209/aaqr.2013.03.0074
TNO identifier
500211
Publisher
AAGR Aerosol and Air Quality Research
ISSN
2071-1409
Source
Aerosol and Air Quality Research, 14 (3), 734-743
Document type
article