Por favor, use este identificador para citar o enlazar a este item:
http://hdl.handle.net/10261/132937
COMPARTIR / EXPORTAR:
SHARE CORE BASE | |
Visualizar otros formatos: MARC | Dublin Core | RDF | ORE | MODS | METS | DIDL | DATACITE | |
Título: | Evaporation of traffic-generated nanoparticles during advection from source |
Autor: | Harrison, Roy M.; Jones, Alan M.; Beddows, David C. S.; Dall'Osto, Manuel CSIC ORCID CVN ; Nikolova, Irina | Palabras clave: | Nanoparticles Ultrafine particles Evaporation Particle size Semi-volatile |
Fecha de publicación: | ene-2016 | Editor: | Elsevier | Citación: | Atmospheric Environment 125 Part A: 1-7 (2016) | Resumen: | Earlier work has demonstrated the potential for volatilisation of nanoparticles emitted by road traffic as these are advected downwind from the source of emissions, but there have been few studies and the processes have yet to be elucidated in detail. Using a dataset collected at paired sampling sites located respectively in a street canyon and in a nearby park, an in depth analysis of particle number size distributions has been conducted in order to better understand the size reduction of the semi-volatile nanoparticles. By sorting the size distributions according to wind direction and fitting log normal modes, it can be seen that the mode peaking at around 22 nm at the street canyon site is on average shrinking to 6.2 nm diameter at the park site which indicates a mean shrinkage rate for these particles of 0.13 nm s with temperatures within the range 12-18 °C. The diurnal variation of the shrunken mode in the park reflects the diurnal pattern of particle concentrations at the street canyon site taken as the main source area. An analysis of peak diameter for the smallest mode at the downwind park site shows an inverse relationship to wind speed suggesting that dilution rather than travel time is the main determinant of the particle shrinkage rate. An evaluation of previously collected C to C n-alkane data from a different urban location shows a good fit to Pankow partitioning theory reflecting the semi-volatility of compounds believed to be representative of the composition of diesel exhaust nanoparticles, hence confirming the feasibility of an evaporative mechanism for particle shrinkage. | Descripción: | 7 pages, 6 figures, 1 table, supplementary data https://dx.doi.org/10.1016/j.atmosenv.2015.10.077 | Versión del editor: | https://dx.doi.org/10.1016/j.atmosenv.2015.10.077 | URI: | http://hdl.handle.net/10261/132937 | DOI: | 10.1016/j.atmosenv.2015.10.077 | Identificadores: | doi: 10.1016/j.atmosenv.2015.10.077 issn: 1352-2310 e-issn: 1873-2844 |
Aparece en las colecciones: | (ICM) Artículos |
Ficheros en este ítem:
Fichero | Descripción | Tamaño | Formato | |
---|---|---|---|---|
Harrison_et_al_2016.pdf | 418,25 kB | Adobe PDF | Visualizar/Abrir |
CORE Recommender
SCOPUSTM
Citations
26
checked on 06-abr-2024
WEB OF SCIENCETM
Citations
25
checked on 25-feb-2024
Page view(s)
275
checked on 23-abr-2024
Download(s)
122
checked on 23-abr-2024
Google ScholarTM
Check
Altmetric
Altmetric
NOTA: Los ítems de Digital.CSIC están protegidos por copyright, con todos los derechos reservados, a menos que se indique lo contrario.