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Estimation of source-based aerosol optical properties for polydisperse aerosols from receptor models

Title
Estimation of source-based aerosol optical properties for polydisperse aerosols from receptor models
Authors
Jung C.H.Lee J.Y.Um J.Lee S.S.Yoon Y.J.Kim Y.P.
Ewha Authors
김용표이지이
SCOPUS Author ID
김용표scopus
Issue Date
2019
Journal Title
Applied Sciences (Switzerland)
ISSN
2076-3417JCR Link
Citation
Applied Sciences (Switzerland) vol. 9, no. 7
Keywords
Mass extinction efficiencyPolydispersitySize- and source-resolved aerosol optical propertiesSMP receptor model
Publisher
MDPI AG
Indexed
SCIE; SCOPUS scopus
Document Type
Article
Abstract
We estimated source-based aerosol optical properties for polydisperse aerosols according to a chemical-species-resolved mass contribution method based on source apportionment. We investigated the sensitivity of aerosol optical properties based on PM2.5 (particulate matter that have a diameter of less than 2.5 micrometers) monitoring results. These aerosols were composed of ions, metals, elemental carbon, and water-soluble organic carbon which includes humic-like carbon substances and water-soluble organic carbon. We calculated aerosols' extinction coefficients based on the PM2.5 composition data and the results of a multivariate receptor model (Solver for Mixture Problem model, SMP). Based on the mass concentration of chemical composition and nine sources calculated with the SMP receptor model, we estimated the size-resolved mass extinction efficiencies for each aerosol source using a multilinear regression model. Consequently, this study quantitatively determined the size resolved sources contributing to the apportionment-based aerosol optical properties and calculated their respective contributions. The results show that source-resolved mass concentrations and extinction coefficients had varying contributions. This discrepancy between the source-based mass concentration and extinction coefficient was mainly due to differences between the source-dependent aerosol size distribution and the aerosol optical properties from different sources. © 2019 by the authors.
DOI
10.3390/app9071443
Appears in Collections:
엘텍공과대학 > 화학신소재공학전공 > Journal papers
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