Source-Based Size-Resolved Optical Properties of Carbonaceous Aerosols
In this study, the source-based optical properties of polydisperse carbonaceous aerosols were determined from PM<sub>2.5</sub> concentrations measured at a Global Atmospheric Watch station in South Korea. The extinction and absorption coefficients of carbonaceous aerosols were calculated...
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| Format: | Article |
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MDPI AG
2021-02-01
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| Series: | Applied Sciences |
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| Online Access: | https://www.mdpi.com/2076-3417/11/4/1434 |
| _version_ | 1797414677977759744 |
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| author | Chang Hoon Jung Sang Hee Han Ji Yi Lee Yong Pyo Kim |
| author_facet | Chang Hoon Jung Sang Hee Han Ji Yi Lee Yong Pyo Kim |
| author_sort | Chang Hoon Jung |
| collection | DOAJ |
| description | In this study, the source-based optical properties of polydisperse carbonaceous aerosols were determined from PM<sub>2.5</sub> concentrations measured at a Global Atmospheric Watch station in South Korea. The extinction and absorption coefficients of carbonaceous aerosols were calculated using the Mie theory and assuming a lognormal size distribution. Based on the mass concentration from the EPA’s Positive Matrix Factorization (PMF) receptor model, which considers five source identification and apportionment factors (biogenic source, local biomass burning, secondary organic aerosol, transported biomass burning, and mixed sources), the source-based size-resolved mass extinction and absorption efficiencies were estimated for each source using a multilinear regression model. The results show that the source-based optical properties depend on the aerosol size and physicochemical characteristics of the chemical compounds. The long-range transport of biomass burning (LBB) aerosol, which has a mass concentration of 20%, holds a 12.1–23.1% total extinction efficiency—depending on the size and refractive index—in the range of 0.1–0.5 μm in geometric mean diameter and humic-like substances (HULIS) imaginary refractive index of 0.006–0.3. Biogenic sources of aerosols with small diameters have higher mass absorption efficiencies (MAE) than other sources, depending on the size and refractive index. |
| first_indexed | 2024-03-09T05:37:02Z |
| format | Article |
| id | doaj.art-b2683f21e26842aca662b06330f1f7e3 |
| institution | Directory Open Access Journal |
| issn | 2076-3417 |
| language | English |
| last_indexed | 2024-03-09T05:37:02Z |
| publishDate | 2021-02-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Applied Sciences |
| spelling | doaj.art-b2683f21e26842aca662b06330f1f7e32023-12-03T12:28:17ZengMDPI AGApplied Sciences2076-34172021-02-01114143410.3390/app11041434Source-Based Size-Resolved Optical Properties of Carbonaceous AerosolsChang Hoon Jung0Sang Hee Han1Ji Yi Lee2Yong Pyo Kim3Department of Health Management, Kyungin Women’s University, 101 Gesan-gil, Gyeyang-gu, Incheon 21041, KoreaDepartment of Environmental Engineering Science, University of Florida, Gainesville, FL 32611, USADepartment of Environmental Engineering and Science, Ewha Womans University, 52 Ewhayeodae-gil, Seodaemun-gu, Seoul 03760, KoreaDepartment of Chemical Engineering and Materials Science, Ewha Womans University, 52 Ewhayeodae-gil, Seodaemun-gu, Seoul 03760, KoreaIn this study, the source-based optical properties of polydisperse carbonaceous aerosols were determined from PM<sub>2.5</sub> concentrations measured at a Global Atmospheric Watch station in South Korea. The extinction and absorption coefficients of carbonaceous aerosols were calculated using the Mie theory and assuming a lognormal size distribution. Based on the mass concentration from the EPA’s Positive Matrix Factorization (PMF) receptor model, which considers five source identification and apportionment factors (biogenic source, local biomass burning, secondary organic aerosol, transported biomass burning, and mixed sources), the source-based size-resolved mass extinction and absorption efficiencies were estimated for each source using a multilinear regression model. The results show that the source-based optical properties depend on the aerosol size and physicochemical characteristics of the chemical compounds. The long-range transport of biomass burning (LBB) aerosol, which has a mass concentration of 20%, holds a 12.1–23.1% total extinction efficiency—depending on the size and refractive index—in the range of 0.1–0.5 μm in geometric mean diameter and humic-like substances (HULIS) imaginary refractive index of 0.006–0.3. Biogenic sources of aerosols with small diameters have higher mass absorption efficiencies (MAE) than other sources, depending on the size and refractive index.https://www.mdpi.com/2076-3417/11/4/1434aerosol optical propertiescarbonaceous aerosolPMF receptor modelsource contributionpolydisperse aerosol |
| spellingShingle | Chang Hoon Jung Sang Hee Han Ji Yi Lee Yong Pyo Kim Source-Based Size-Resolved Optical Properties of Carbonaceous Aerosols Applied Sciences aerosol optical properties carbonaceous aerosol PMF receptor model source contribution polydisperse aerosol |
| title | Source-Based Size-Resolved Optical Properties of Carbonaceous Aerosols |
| title_full | Source-Based Size-Resolved Optical Properties of Carbonaceous Aerosols |
| title_fullStr | Source-Based Size-Resolved Optical Properties of Carbonaceous Aerosols |
| title_full_unstemmed | Source-Based Size-Resolved Optical Properties of Carbonaceous Aerosols |
| title_short | Source-Based Size-Resolved Optical Properties of Carbonaceous Aerosols |
| title_sort | source based size resolved optical properties of carbonaceous aerosols |
| topic | aerosol optical properties carbonaceous aerosol PMF receptor model source contribution polydisperse aerosol |
| url | https://www.mdpi.com/2076-3417/11/4/1434 |
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