Molecular Characterization of Oxygenated Organic Molecules and Their Dominating Roles in Particle Growth in Hong Kong
Oxygenated organic molecules (OOMs) are critical intermediates linking volatile organic compound oxidation and secondary organic aerosol (SOA) formation. Yet, the understanding of OOM components, formation mechanism, and impacts are still limited, especially for urbanized regions with a cocktail of...
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| Veröffentlicht in: | Environmental science & technology 2023-05, Vol.57 (20), p.7764-7776 |
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| creator | Zheng, Penggang Chen, Yi Wang, Zhe Liu, Yuliang Pu, Wei Yu, Chuan Xia, Men Xu, Yang Guo, Jia Guo, Yishuo Tian, Linhui Qiao, Xiaohui Huang, Dan Dan Yan, Chao Nie, Wei Worsnop, Douglas R. Lee, Shuncheng Wang, Tao |
| description | Oxygenated organic molecules (OOMs) are critical intermediates linking volatile organic compound oxidation and secondary organic aerosol (SOA) formation. Yet, the understanding of OOM components, formation mechanism, and impacts are still limited, especially for urbanized regions with a cocktail of anthropogenic emissions. Herein, ambient measurements of OOMs were conducted at a regional background site in South China in 2018. The molecular characteristics of OOMs revealed dominant nitrogen-containing products, and the influences of different factors on OOM composition and oxidation state were elucidated. Positive matrix factorization analysis resolved the complex OOM species to factors featured with fingerprint species from different oxidation pathways. A new method was developed to identify the key functional groups of OOMs, which successfully classified the majority species into carbonyls (8%), hydroperoxides (7%), nitrates (17%), peroxyl nitrates (10%), dinitrates (13%), aromatic ring-retaining species (6%), and terpenes (7%). The volatility estimation of OOMs was improved based on their identified functional groups and was used to simulate the aerosol growth process contributed by the condensation of those low-volatile OOMs. The results demonstrate the predominant role of OOMs in contributing sub-100 nm particle growth and SOA formation and highlight the importance of dinitrates and anthropogenic products from multistep oxidation. |
| doi_str_mv | 10.1021/acs.est.2c09252 |
| format | Article |
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Yet, the understanding of OOM components, formation mechanism, and impacts are still limited, especially for urbanized regions with a cocktail of anthropogenic emissions. Herein, ambient measurements of OOMs were conducted at a regional background site in South China in 2018. The molecular characteristics of OOMs revealed dominant nitrogen-containing products, and the influences of different factors on OOM composition and oxidation state were elucidated. Positive matrix factorization analysis resolved the complex OOM species to factors featured with fingerprint species from different oxidation pathways. A new method was developed to identify the key functional groups of OOMs, which successfully classified the majority species into carbonyls (8%), hydroperoxides (7%), nitrates (17%), peroxyl nitrates (10%), dinitrates (13%), aromatic ring-retaining species (6%), and terpenes (7%). The volatility estimation of OOMs was improved based on their identified functional groups and was used to simulate the aerosol growth process contributed by the condensation of those low-volatile OOMs. The results demonstrate the predominant role of OOMs in contributing sub-100 nm particle growth and SOA formation and highlight the importance of dinitrates and anthropogenic products from multistep oxidation.</description><identifier>ISSN: 0013-936X</identifier><identifier>EISSN: 1520-5851</identifier><identifier>DOI: 10.1021/acs.est.2c09252</identifier><identifier>PMID: 37155674</identifier><language>eng</language><publisher>United States: American Chemical Society</publisher><subject>Aerosols ; Aerosols - analysis ; Air Pollutants - analysis ; Anthropogenic factors ; Aromatic compounds ; Carbonyl compounds ; Carbonyls ; Condensates ; Dinitrates ; Emission measurements ; Emissions ; Functional groups ; Hong Kong ; Human influences ; Intermediates ; Nitrates ; Occurrence, Fate, and Transport of Contaminants in Indoor Air and Atmosphere ; Organic chemistry ; Organic compounds ; Oxidation ; Oxygenation ; Terpenes ; Valence ; VOCs ; Volatile organic compounds</subject><ispartof>Environmental science & technology, 2023-05, Vol.57 (20), p.7764-7776</ispartof><rights>2023 American Chemical Society</rights><rights>Copyright American Chemical Society May 23, 2023</rights><lds50>peer_reviewed</lds50><woscitedreferencessubscribed>false</woscitedreferencessubscribed><citedby>FETCH-LOGICAL-a361t-be2585f2f21d5f624134c283602dc30a712f8af00603b17ceb0ac9a036da9d903</citedby><cites>FETCH-LOGICAL-a361t-be2585f2f21d5f624134c283602dc30a712f8af00603b17ceb0ac9a036da9d903</cites><orcidid>0000-0002-9695-2465 ; 0000-0002-6048-0515 ; 0000-0002-5627-6562 ; 0000-0003-2878-7469 ; 0000-0002-4765-9377</orcidid></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><linktopdf>$$Uhttps://pubs.acs.org/doi/pdf/10.1021/acs.est.2c09252$$EPDF$$P50$$Gacs$$H</linktopdf><linktohtml>$$Uhttps://pubs.acs.org/doi/10.1021/acs.est.2c09252$$EHTML$$P50$$Gacs$$H</linktohtml><link.rule.ids>314,776,780,2752,27053,27901,27902,56713,56763</link.rule.ids><backlink>$$Uhttps://www.ncbi.nlm.nih.gov/pubmed/37155674$$D View this record in MEDLINE/PubMed$$Hfree_for_read</backlink></links><search><creatorcontrib>Zheng, Penggang</creatorcontrib><creatorcontrib>Chen, Yi</creatorcontrib><creatorcontrib>Wang, Zhe</creatorcontrib><creatorcontrib>Liu, Yuliang</creatorcontrib><creatorcontrib>Pu, Wei</creatorcontrib><creatorcontrib>Yu, Chuan</creatorcontrib><creatorcontrib>Xia, Men</creatorcontrib><creatorcontrib>Xu, Yang</creatorcontrib><creatorcontrib>Guo, Jia</creatorcontrib><creatorcontrib>Guo, Yishuo</creatorcontrib><creatorcontrib>Tian, Linhui</creatorcontrib><creatorcontrib>Qiao, Xiaohui</creatorcontrib><creatorcontrib>Huang, Dan Dan</creatorcontrib><creatorcontrib>Yan, Chao</creatorcontrib><creatorcontrib>Nie, Wei</creatorcontrib><creatorcontrib>Worsnop, Douglas R.</creatorcontrib><creatorcontrib>Lee, Shuncheng</creatorcontrib><creatorcontrib>Wang, Tao</creatorcontrib><title>Molecular Characterization of Oxygenated Organic Molecules and Their Dominating Roles in Particle Growth in Hong Kong</title><title>Environmental science & technology</title><addtitle>Environ. Sci. Technol</addtitle><description>Oxygenated organic molecules (OOMs) are critical intermediates linking volatile organic compound oxidation and secondary organic aerosol (SOA) formation. Yet, the understanding of OOM components, formation mechanism, and impacts are still limited, especially for urbanized regions with a cocktail of anthropogenic emissions. Herein, ambient measurements of OOMs were conducted at a regional background site in South China in 2018. The molecular characteristics of OOMs revealed dominant nitrogen-containing products, and the influences of different factors on OOM composition and oxidation state were elucidated. Positive matrix factorization analysis resolved the complex OOM species to factors featured with fingerprint species from different oxidation pathways. A new method was developed to identify the key functional groups of OOMs, which successfully classified the majority species into carbonyls (8%), hydroperoxides (7%), nitrates (17%), peroxyl nitrates (10%), dinitrates (13%), aromatic ring-retaining species (6%), and terpenes (7%). The volatility estimation of OOMs was improved based on their identified functional groups and was used to simulate the aerosol growth process contributed by the condensation of those low-volatile OOMs. The results demonstrate the predominant role of OOMs in contributing sub-100 nm particle growth and SOA formation and highlight the importance of dinitrates and anthropogenic products from multistep oxidation.</description><subject>Aerosols</subject><subject>Aerosols - analysis</subject><subject>Air Pollutants - analysis</subject><subject>Anthropogenic factors</subject><subject>Aromatic compounds</subject><subject>Carbonyl compounds</subject><subject>Carbonyls</subject><subject>Condensates</subject><subject>Dinitrates</subject><subject>Emission measurements</subject><subject>Emissions</subject><subject>Functional groups</subject><subject>Hong Kong</subject><subject>Human influences</subject><subject>Intermediates</subject><subject>Nitrates</subject><subject>Occurrence, Fate, and Transport of Contaminants in Indoor Air and Atmosphere</subject><subject>Organic chemistry</subject><subject>Organic compounds</subject><subject>Oxidation</subject><subject>Oxygenation</subject><subject>Terpenes</subject><subject>Valence</subject><subject>VOCs</subject><subject>Volatile organic compounds</subject><issn>0013-936X</issn><issn>1520-5851</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2023</creationdate><recordtype>article</recordtype><sourceid>EIF</sourceid><recordid>eNp1kcFLwzAUxoMoOqdnbxLwIkjnS7Jm7VGmbuJkIgreyluabpGumUmLzr_elE0Pgpc8SH7f917eR8gJgx4Dzi5R-Z72dY8rSHnMd0iHxRyiOInZLukAMBGlQr4ekEPv3wCAC0j2yYEYsDiWg36HNA-21Kop0dHhAh2qWjvzhbWxFbUFnX6u57rCWud06uZYGUW3Au0pVjl9Xmjj6LVdmkCZak6fbPtkKvqIrjaq1HTk7Ee9aK_GNgD34TgiewWWXh9va5e83N48D8fRZDq6G15NIhSS1dFM8_CTghec5XEheZ-JvuKJkMBzJQAHjBcJFgASxIwNlJ4BqhRByBzTPAXRJecb35Wz701YVLY0XumyxErbxmc8YSyWadJPAnr2B32zjavCdC2VcMlT0RpebijlrPdOF9nKmSW6dcYgaxPJQiJZq94mEhSnW99mttT5L_8TQQAuNkCr_O35n903VjeWlg</recordid><startdate>20230523</startdate><enddate>20230523</enddate><creator>Zheng, Penggang</creator><creator>Chen, Yi</creator><creator>Wang, Zhe</creator><creator>Liu, Yuliang</creator><creator>Pu, Wei</creator><creator>Yu, Chuan</creator><creator>Xia, Men</creator><creator>Xu, Yang</creator><creator>Guo, Jia</creator><creator>Guo, Yishuo</creator><creator>Tian, Linhui</creator><creator>Qiao, Xiaohui</creator><creator>Huang, Dan Dan</creator><creator>Yan, Chao</creator><creator>Nie, Wei</creator><creator>Worsnop, Douglas R.</creator><creator>Lee, Shuncheng</creator><creator>Wang, Tao</creator><general>American Chemical Society</general><scope>CGR</scope><scope>CUY</scope><scope>CVF</scope><scope>ECM</scope><scope>EIF</scope><scope>NPM</scope><scope>AAYXX</scope><scope>CITATION</scope><scope>7QO</scope><scope>7ST</scope><scope>7T7</scope><scope>7U7</scope><scope>8FD</scope><scope>C1K</scope><scope>FR3</scope><scope>P64</scope><scope>SOI</scope><scope>7X8</scope><orcidid>https://orcid.org/0000-0002-9695-2465</orcidid><orcidid>https://orcid.org/0000-0002-6048-0515</orcidid><orcidid>https://orcid.org/0000-0002-5627-6562</orcidid><orcidid>https://orcid.org/0000-0003-2878-7469</orcidid><orcidid>https://orcid.org/0000-0002-4765-9377</orcidid></search><sort><creationdate>20230523</creationdate><title>Molecular Characterization of Oxygenated Organic Molecules and Their Dominating Roles in Particle Growth in Hong Kong</title><author>Zheng, Penggang ; 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Sci. Technol</addtitle><date>2023-05-23</date><risdate>2023</risdate><volume>57</volume><issue>20</issue><spage>7764</spage><epage>7776</epage><pages>7764-7776</pages><issn>0013-936X</issn><eissn>1520-5851</eissn><abstract>Oxygenated organic molecules (OOMs) are critical intermediates linking volatile organic compound oxidation and secondary organic aerosol (SOA) formation. Yet, the understanding of OOM components, formation mechanism, and impacts are still limited, especially for urbanized regions with a cocktail of anthropogenic emissions. Herein, ambient measurements of OOMs were conducted at a regional background site in South China in 2018. The molecular characteristics of OOMs revealed dominant nitrogen-containing products, and the influences of different factors on OOM composition and oxidation state were elucidated. Positive matrix factorization analysis resolved the complex OOM species to factors featured with fingerprint species from different oxidation pathways. A new method was developed to identify the key functional groups of OOMs, which successfully classified the majority species into carbonyls (8%), hydroperoxides (7%), nitrates (17%), peroxyl nitrates (10%), dinitrates (13%), aromatic ring-retaining species (6%), and terpenes (7%). The volatility estimation of OOMs was improved based on their identified functional groups and was used to simulate the aerosol growth process contributed by the condensation of those low-volatile OOMs. The results demonstrate the predominant role of OOMs in contributing sub-100 nm particle growth and SOA formation and highlight the importance of dinitrates and anthropogenic products from multistep oxidation.</abstract><cop>United States</cop><pub>American Chemical Society</pub><pmid>37155674</pmid><doi>10.1021/acs.est.2c09252</doi><tpages>13</tpages><orcidid>https://orcid.org/0000-0002-9695-2465</orcidid><orcidid>https://orcid.org/0000-0002-6048-0515</orcidid><orcidid>https://orcid.org/0000-0002-5627-6562</orcidid><orcidid>https://orcid.org/0000-0003-2878-7469</orcidid><orcidid>https://orcid.org/0000-0002-4765-9377</orcidid></addata></record> |
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| subjects | Aerosols Aerosols - analysis Air Pollutants - analysis Anthropogenic factors Aromatic compounds Carbonyl compounds Carbonyls Condensates Dinitrates Emission measurements Emissions Functional groups Hong Kong Human influences Intermediates Nitrates Occurrence, Fate, and Transport of Contaminants in Indoor Air and Atmosphere Organic chemistry Organic compounds Oxidation Oxygenation Terpenes Valence VOCs Volatile organic compounds |
| title | Molecular Characterization of Oxygenated Organic Molecules and Their Dominating Roles in Particle Growth in Hong Kong |
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