Single particle characterization using the soot particle aerosol mass spectrometer (SP-AMS)

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dc.contributor.author Lee, Alex K. Y.
dc.contributor.author Willis, Megan D.
dc.contributor.author Healy, Robert M.
dc.contributor.author Onasch, Timothy B.
dc.contributor.author Abbatt, Jonathan P. D.
dc.date.accessioned 2016-07-27T12:56:02Z
dc.date.available 2016-07-27T12:56:02Z
dc.date.issued 2014-06-12
dc.identifier.citation Lee, A.K.Y., Willis, M.D., Healy, R.M., Onasch, T.B. and Abbatt, J.P.D. (2014) 'Single particle characterization using the soot particle aerosol mass spectrometer (SP-AMS)', Atmospheric Chemistry and Physics Discussions, 14, pp. 15323–15361. doi:10.5194/acpd-14-15323-2014 en
dc.identifier.volume 14 en
dc.identifier.startpage 15323 en
dc.identifier.endpage 15361 en
dc.identifier.issn 1680-7367
dc.identifier.uri http://hdl.handle.net/10468/2943
dc.identifier.doi 10.5194/acpd-14-15323-2014
dc.description.abstract Understanding the impact of atmospheric black carbon (BC) containing particles on human health and radiative forcing requires knowledge of the mixing state of BC, including the characteristics of the materials with which it is internally mixed. In this study, we demonstrate for the first time the capabilities of the Aerodyne Soot-Particle Aerosol Mass Spectrometer equipped with a light scattering module (LS-SP-AMS) to examine the mixing state of refractory BC (rBC) and other aerosol components in an urban environment (downtown Toronto). K-means clustering analysis was used to classify single particle mass spectra into chemically distinct groups. One resultant cluster is dominated by rBC mass spectral signals (C+1 to C+5) while the organic signals fall into a few major clusters, identified as hydrocarbon-like organic aerosol (HOA), oxygenated organic aerosol (OOA), and cooking emission organic aerosol (COA). A nearly external mixing is observed with small BC particles only thinly coated by HOA ( 28% by mass on average), while over 90% of the HOA-rich particles did not contain detectable amounts of rBC. Most of the particles classified into other inorganic and organic clusters were not significantly associated with BC. The single particle results also suggest that HOA and COA emitted from anthropogenic sources were likely major contributors to organic-rich particles with low to mid-range aerodynamic diameter (dva). The similar temporal profiles and mass spectral features of the organic clusters and the factors from a positive matrix factorization (PMF) analysis of the ensemble aerosol dataset validate the conventional interpretation of the PMF results. en
dc.description.sponsorship European Commission (Marie Curie Action FP7-PEOPLE-IOF-2011, Project: CHEMBC, No. 299755) en
dc.format.mimetype application/pdf en
dc.language.iso en en
dc.publisher Copernicus Publications on behalf of the European Geosciences Union (EGU) en
dc.rights © 2014, the Authors. This work is distributed under the Creative Commons Attribution 3.0 License. en
dc.rights.uri https://creativecommons.org/licenses/by/3.0/ en
dc.subject Aerosol composition en
dc.subject Anthropogenic en
dc.subject Mass spectrometry en
dc.subject Radiative forcing en
dc.subject Black carbon en
dc.title Single particle characterization using the soot particle aerosol mass spectrometer (SP-AMS) en
dc.type Article (peer-reviewed) en
dc.internal.authorcontactother Robert Healy, Chemistry, University College Cork, Cork, Ireland. +353-21-490-3000 Email: robert.healy@ucc.ie en
dc.internal.availability Full text available en
dc.date.updated 2014-06-12T14:04:56Z
dc.description.version Published Version en
dc.internal.rssid 259009699
dc.contributor.funder European Commission
dc.contributor.funder Natural Sciences and Engineering Research Council of Canada
dc.contributor.funder Canada Foundation for Innovation, Canada
dc.description.status Peer reviewed en
dc.identifier.journaltitle Atmospheric Chemistry and Physics Discussions en
dc.internal.copyrightchecked Yes en
dc.internal.licenseacceptance Yes en
dc.internal.IRISemailaddress robert.healy@ucc.ie en


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© 2014, the Authors. This work is distributed under the Creative Commons Attribution 3.0 License. Except where otherwise noted, this item's license is described as © 2014, the Authors. This work is distributed under the Creative Commons Attribution 3.0 License.
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