Characteristics and Sources of Organic Aerosol Markers in PM2.5
Abstract To investigate the molecular compositions, sources, and evolution processes of organic aerosols (OAs), PM2.5 samples in wintertime were collected in Jinan, a typically polluted city in the North China Plain (NCP). The concentrations of PM2.5, carbonaceous species, and organic components (e....
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| Format: | Article |
| Language: | English |
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Springer
2021-08-01
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| Series: | Aerosol and Air Quality Research |
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| Online Access: | https://doi.org/10.4209/aaqr.210180 |
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| author | Zheng Li Ruiwen Zhou Yuanyuan Li Min Chen Yachen Wang Tonglin Huang Yanan Yi Zhanfang Hou Jingjing Meng Li Yan |
| author_facet | Zheng Li Ruiwen Zhou Yuanyuan Li Min Chen Yachen Wang Tonglin Huang Yanan Yi Zhanfang Hou Jingjing Meng Li Yan |
| author_sort | Zheng Li |
| collection | DOAJ |
| description | Abstract To investigate the molecular compositions, sources, and evolution processes of organic aerosols (OAs), PM2.5 samples in wintertime were collected in Jinan, a typically polluted city in the North China Plain (NCP). The concentrations of PM2.5, carbonaceous species, and organic components (e.g., sugars, fatty acids, polycyclic aromatic hydrocarbons (PAHs) and oxygenated-PAHs (OPAHs)) in haze episodes were 1.8–2.7 times higher than those in clean episodes. Levoglucosan was the most abundant saccharide, which exhibited significant correlations with carbonaceous species during the whole sampling period, demonstrating that biomass burning has an important effect on the concentrations of carbonaceous species in PM2.5 of Jinan during wintertime. The higher ratios of both secondary OC/OC (SOC/OC) and C18:1/C18:0 was observed during the clean days than those during haze days, implying that OAs during clean periods were more aged. The higher ratio of OPAHs/PAHs in the daytime reflected the more photochemical formation of OPAHs in the daytime. Positive matrix factorization (PMF) model proved that biomass burning was the major source of OAs during the whole sampling period. Potential source contribution function (PSCF) and concentration-weight trajectory (CWT) results indicating that Shandong Province and Beijing-Tianjing-Hebei (BTH) region made important contribution to the levels of PM2.5 in Jinan during the winter. Moreover, the CWT results showed that OAs during haze periods were largely originated from local and surrounding regions. These results confirmed that biomass burning can significantly influence the concentrations and chemical compositions of OAs, thereby they can affect human health and atmospheric chemistry. |
| format | Article |
| id | doaj-art-28c9666130e049f4ac0fcd16c7d4338d |
| institution | Kabale University |
| issn | 1680-8584 2071-1409 |
| language | English |
| publishDate | 2021-08-01 |
| publisher | Springer |
| record_format | Article |
| series | Aerosol and Air Quality Research |
| spelling | doaj-art-28c9666130e049f4ac0fcd16c7d4338d2025-02-09T12:21:31ZengSpringerAerosol and Air Quality Research1680-85842071-14092021-08-0121911710.4209/aaqr.210180Characteristics and Sources of Organic Aerosol Markers in PM2.5Zheng Li0Ruiwen Zhou1Yuanyuan Li2Min Chen3Yachen Wang4Tonglin Huang5Yanan Yi6Zhanfang Hou7Jingjing Meng8Li Yan9School of Geography and the Environment, Liaocheng UniversitySchool of Geography and the Environment, Liaocheng UniversitySchool of Geography and the Environment, Liaocheng UniversitySchool of Geography and the Environment, Liaocheng UniversitySchool of Geography and the Environment, Liaocheng UniversitySchool of Geography and the Environment, Liaocheng UniversitySchool of Geography and the Environment, Liaocheng UniversitySchool of Geography and the Environment, Liaocheng UniversitySchool of Geography and the Environment, Liaocheng UniversityChinese Academy for Environmental PlanningAbstract To investigate the molecular compositions, sources, and evolution processes of organic aerosols (OAs), PM2.5 samples in wintertime were collected in Jinan, a typically polluted city in the North China Plain (NCP). The concentrations of PM2.5, carbonaceous species, and organic components (e.g., sugars, fatty acids, polycyclic aromatic hydrocarbons (PAHs) and oxygenated-PAHs (OPAHs)) in haze episodes were 1.8–2.7 times higher than those in clean episodes. Levoglucosan was the most abundant saccharide, which exhibited significant correlations with carbonaceous species during the whole sampling period, demonstrating that biomass burning has an important effect on the concentrations of carbonaceous species in PM2.5 of Jinan during wintertime. The higher ratios of both secondary OC/OC (SOC/OC) and C18:1/C18:0 was observed during the clean days than those during haze days, implying that OAs during clean periods were more aged. The higher ratio of OPAHs/PAHs in the daytime reflected the more photochemical formation of OPAHs in the daytime. Positive matrix factorization (PMF) model proved that biomass burning was the major source of OAs during the whole sampling period. Potential source contribution function (PSCF) and concentration-weight trajectory (CWT) results indicating that Shandong Province and Beijing-Tianjing-Hebei (BTH) region made important contribution to the levels of PM2.5 in Jinan during the winter. Moreover, the CWT results showed that OAs during haze periods were largely originated from local and surrounding regions. These results confirmed that biomass burning can significantly influence the concentrations and chemical compositions of OAs, thereby they can affect human health and atmospheric chemistry.https://doi.org/10.4209/aaqr.210180Organic aerosolsLevoglucosanBiomass burningPAHsJinan city |
| spellingShingle | Zheng Li Ruiwen Zhou Yuanyuan Li Min Chen Yachen Wang Tonglin Huang Yanan Yi Zhanfang Hou Jingjing Meng Li Yan Characteristics and Sources of Organic Aerosol Markers in PM2.5 Aerosol and Air Quality Research Organic aerosols Levoglucosan Biomass burning PAHs Jinan city |
| title | Characteristics and Sources of Organic Aerosol Markers in PM2.5 |
| title_full | Characteristics and Sources of Organic Aerosol Markers in PM2.5 |
| title_fullStr | Characteristics and Sources of Organic Aerosol Markers in PM2.5 |
| title_full_unstemmed | Characteristics and Sources of Organic Aerosol Markers in PM2.5 |
| title_short | Characteristics and Sources of Organic Aerosol Markers in PM2.5 |
| title_sort | characteristics and sources of organic aerosol markers in pm2 5 |
| topic | Organic aerosols Levoglucosan Biomass burning PAHs Jinan city |
| url | https://doi.org/10.4209/aaqr.210180 |
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