Water-Insoluble Organics Dominate Brown Carbon in Wintertime Urban Aerosol of China: Chemical Characteristics and Optical Properties
The chromophores responsible for light absorption in atmospheric brown carbon (BrC) are not well characterized, which hinders our understanding of BrC chemistry, the links with optical properties, and accurate model representations of BrC to global climate and atmospheric oxidative capacity. In this...
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| Veröffentlicht in: | Environmental science & technology 2020-07, Vol.54 (13), p.7836-7847 |
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| creator | Huang, Ru-Jin Yang, Lu Shen, Jincan Yuan, Wei Gong, Yuquan Guo, Jie Cao, Wenjuan Duan, Jing Ni, Haiyan Zhu, Chongshu Dai, Wenting Li, Yongjie Chen, Yang Chen, Qi Wu, Yunfei Zhang, Renjian Dusek, Ulrike O’Dowd, Colin Hoffmann, Thorsten |
| description | The chromophores responsible for light absorption in atmospheric brown carbon (BrC) are not well characterized, which hinders our understanding of BrC chemistry, the links with optical properties, and accurate model representations of BrC to global climate and atmospheric oxidative capacity. In this study, the light absorption properties and chromophore composition of three BrC fractions of different polarities were characterized for urban aerosol collected in Xi’an and Beijing in winter 2013–2014. These three BrC fractions show large differences in light absorption and chromophore composition, but the chromophores responsible for light absorption are similar in Xi’an and Beijing. Water-insoluble BrC (WI-BrC) fraction dominates the total BrC absorption at 365 nm in both Xi’an (51 ± 5%) and Beijing (62 ± 13%), followed by a humic-like fraction (HULIS-BrC) and high-polarity water-soluble BrC. The major chromophores identified in HULIS-BrC are nitrophenols and carbonyl oxygenated polycyclic aromatic hydrocarbons (OPAHs) with 2–3 aromatic rings (in total 18 species), accounting for 10% and 14% of the light absorption of HULIS-BrC at 365 nm in Xi’an and Beijing, respectively. In comparison, the major chromophores identified in WI-BrC are PAHs and OPAHs with 4–6 aromatic rings (in total 16 species), contributing 6% and 8% of the light absorption of WI-BrC at 365 nm in Xi’an and Beijing, respectively. |
| doi_str_mv | 10.1021/acs.est.0c01149 |
| format | Article |
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In this study, the light absorption properties and chromophore composition of three BrC fractions of different polarities were characterized for urban aerosol collected in Xi’an and Beijing in winter 2013–2014. These three BrC fractions show large differences in light absorption and chromophore composition, but the chromophores responsible for light absorption are similar in Xi’an and Beijing. Water-insoluble BrC (WI-BrC) fraction dominates the total BrC absorption at 365 nm in both Xi’an (51 ± 5%) and Beijing (62 ± 13%), followed by a humic-like fraction (HULIS-BrC) and high-polarity water-soluble BrC. The major chromophores identified in HULIS-BrC are nitrophenols and carbonyl oxygenated polycyclic aromatic hydrocarbons (OPAHs) with 2–3 aromatic rings (in total 18 species), accounting for 10% and 14% of the light absorption of HULIS-BrC at 365 nm in Xi’an and Beijing, respectively. In comparison, the major chromophores identified in WI-BrC are PAHs and OPAHs with 4–6 aromatic rings (in total 16 species), contributing 6% and 8% of the light absorption of WI-BrC at 365 nm in Xi’an and Beijing, respectively.</description><identifier>ISSN: 0013-936X</identifier><identifier>EISSN: 1520-5851</identifier><identifier>DOI: 10.1021/acs.est.0c01149</identifier><language>eng</language><publisher>Easton: American Chemical Society</publisher><subject>Absorption ; Aerosols ; Anthropogenic Impacts on the Atmosphere ; Aromatic compounds ; Carbon ; Carbonyl compounds ; Carbonyls ; Chromophores ; Composition ; Electromagnetic absorption ; Light ; Optical properties ; Polarity ; Polycyclic aromatic hydrocarbons</subject><ispartof>Environmental science & technology, 2020-07, Vol.54 (13), p.7836-7847</ispartof><rights>Copyright American Chemical Society Jul 7, 2020</rights><lds50>peer_reviewed</lds50><oa>free_for_read</oa><woscitedreferencessubscribed>false</woscitedreferencessubscribed><citedby>FETCH-LOGICAL-a445t-9f6734b976810202a44d120cd4a1f3e01864ddb1181604cb9c61da023dd99e3a3</citedby><cites>FETCH-LOGICAL-a445t-9f6734b976810202a44d120cd4a1f3e01864ddb1181604cb9c61da023dd99e3a3</cites><orcidid>0000-0002-4907-9616</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.0c01149$$EPDF$$P50$$Gacs$$H</linktopdf><linktohtml>$$Uhttps://pubs.acs.org/doi/10.1021/acs.est.0c01149$$EHTML$$P50$$Gacs$$H</linktohtml><link.rule.ids>314,776,780,2752,27053,27901,27902,56713,56763</link.rule.ids></links><search><creatorcontrib>Huang, Ru-Jin</creatorcontrib><creatorcontrib>Yang, Lu</creatorcontrib><creatorcontrib>Shen, Jincan</creatorcontrib><creatorcontrib>Yuan, Wei</creatorcontrib><creatorcontrib>Gong, Yuquan</creatorcontrib><creatorcontrib>Guo, Jie</creatorcontrib><creatorcontrib>Cao, Wenjuan</creatorcontrib><creatorcontrib>Duan, Jing</creatorcontrib><creatorcontrib>Ni, Haiyan</creatorcontrib><creatorcontrib>Zhu, Chongshu</creatorcontrib><creatorcontrib>Dai, Wenting</creatorcontrib><creatorcontrib>Li, Yongjie</creatorcontrib><creatorcontrib>Chen, Yang</creatorcontrib><creatorcontrib>Chen, Qi</creatorcontrib><creatorcontrib>Wu, Yunfei</creatorcontrib><creatorcontrib>Zhang, Renjian</creatorcontrib><creatorcontrib>Dusek, Ulrike</creatorcontrib><creatorcontrib>O’Dowd, Colin</creatorcontrib><creatorcontrib>Hoffmann, Thorsten</creatorcontrib><title>Water-Insoluble Organics Dominate Brown Carbon in Wintertime Urban Aerosol of China: Chemical Characteristics and Optical Properties</title><title>Environmental science & technology</title><addtitle>Environ. Sci. Technol</addtitle><description>The chromophores responsible for light absorption in atmospheric brown carbon (BrC) are not well characterized, which hinders our understanding of BrC chemistry, the links with optical properties, and accurate model representations of BrC to global climate and atmospheric oxidative capacity. In this study, the light absorption properties and chromophore composition of three BrC fractions of different polarities were characterized for urban aerosol collected in Xi’an and Beijing in winter 2013–2014. These three BrC fractions show large differences in light absorption and chromophore composition, but the chromophores responsible for light absorption are similar in Xi’an and Beijing. Water-insoluble BrC (WI-BrC) fraction dominates the total BrC absorption at 365 nm in both Xi’an (51 ± 5%) and Beijing (62 ± 13%), followed by a humic-like fraction (HULIS-BrC) and high-polarity water-soluble BrC. The major chromophores identified in HULIS-BrC are nitrophenols and carbonyl oxygenated polycyclic aromatic hydrocarbons (OPAHs) with 2–3 aromatic rings (in total 18 species), accounting for 10% and 14% of the light absorption of HULIS-BrC at 365 nm in Xi’an and Beijing, respectively. In comparison, the major chromophores identified in WI-BrC are PAHs and OPAHs with 4–6 aromatic rings (in total 16 species), contributing 6% and 8% of the light absorption of WI-BrC at 365 nm in Xi’an and Beijing, respectively.</description><subject>Absorption</subject><subject>Aerosols</subject><subject>Anthropogenic Impacts on the Atmosphere</subject><subject>Aromatic compounds</subject><subject>Carbon</subject><subject>Carbonyl compounds</subject><subject>Carbonyls</subject><subject>Chromophores</subject><subject>Composition</subject><subject>Electromagnetic absorption</subject><subject>Light</subject><subject>Optical properties</subject><subject>Polarity</subject><subject>Polycyclic aromatic hydrocarbons</subject><issn>0013-936X</issn><issn>1520-5851</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2020</creationdate><recordtype>article</recordtype><recordid>eNp1kL1PwzAQxS0EEqUws1piRGnPiZMmbCV8VapUBqqyRY7tQKrEDnYqxM4fzoVWbExn-b3fO90j5JLBhEHIpkL6ifb9BCQwxrMjMmJxCEGcxuyYjABYFGRR8npKzrzfAkAYQToi3xvRaxcsjLfNrmw0Xbk3YWrp6Z1ta4MivXX209BcuNIaWhu6qQ0ifd1qunalMHSunUWc2orm78jc4NBtLUWDD-GERHvt-yFUGEVXXf-rPTvbDTnan5OTSjReXxzmmKwf7l_yp2C5elzk82UgOI_7IKuSWcTLbJakeDGE-KtYCFJxwapIA0sTrlTJWMoS4LLMZMKUwEOVyjIdiWhMrva5nbMfOyyr2NqdM7iyCHkYA8TJDNA13bsknuWdrorO1a1wXwWDYqi6wKqLgT5UjcT1nhiEv8j_3D8JA4Jl</recordid><startdate>20200707</startdate><enddate>20200707</enddate><creator>Huang, Ru-Jin</creator><creator>Yang, Lu</creator><creator>Shen, Jincan</creator><creator>Yuan, Wei</creator><creator>Gong, Yuquan</creator><creator>Guo, Jie</creator><creator>Cao, Wenjuan</creator><creator>Duan, Jing</creator><creator>Ni, Haiyan</creator><creator>Zhu, Chongshu</creator><creator>Dai, Wenting</creator><creator>Li, Yongjie</creator><creator>Chen, Yang</creator><creator>Chen, Qi</creator><creator>Wu, Yunfei</creator><creator>Zhang, Renjian</creator><creator>Dusek, Ulrike</creator><creator>O’Dowd, Colin</creator><creator>Hoffmann, Thorsten</creator><general>American Chemical Society</general><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><orcidid>https://orcid.org/0000-0002-4907-9616</orcidid></search><sort><creationdate>20200707</creationdate><title>Water-Insoluble Organics Dominate Brown Carbon in Wintertime Urban Aerosol of China: Chemical Characteristics and Optical Properties</title><author>Huang, Ru-Jin ; Yang, Lu ; Shen, Jincan ; Yuan, Wei ; Gong, Yuquan ; Guo, Jie ; Cao, Wenjuan ; Duan, Jing ; Ni, Haiyan ; Zhu, Chongshu ; Dai, Wenting ; Li, Yongjie ; Chen, Yang ; Chen, Qi ; Wu, Yunfei ; Zhang, Renjian ; Dusek, Ulrike ; O’Dowd, Colin ; Hoffmann, Thorsten</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-a445t-9f6734b976810202a44d120cd4a1f3e01864ddb1181604cb9c61da023dd99e3a3</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2020</creationdate><topic>Absorption</topic><topic>Aerosols</topic><topic>Anthropogenic Impacts on the Atmosphere</topic><topic>Aromatic compounds</topic><topic>Carbon</topic><topic>Carbonyl compounds</topic><topic>Carbonyls</topic><topic>Chromophores</topic><topic>Composition</topic><topic>Electromagnetic absorption</topic><topic>Light</topic><topic>Optical properties</topic><topic>Polarity</topic><topic>Polycyclic aromatic hydrocarbons</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Huang, Ru-Jin</creatorcontrib><creatorcontrib>Yang, Lu</creatorcontrib><creatorcontrib>Shen, Jincan</creatorcontrib><creatorcontrib>Yuan, Wei</creatorcontrib><creatorcontrib>Gong, Yuquan</creatorcontrib><creatorcontrib>Guo, Jie</creatorcontrib><creatorcontrib>Cao, Wenjuan</creatorcontrib><creatorcontrib>Duan, Jing</creatorcontrib><creatorcontrib>Ni, Haiyan</creatorcontrib><creatorcontrib>Zhu, Chongshu</creatorcontrib><creatorcontrib>Dai, Wenting</creatorcontrib><creatorcontrib>Li, Yongjie</creatorcontrib><creatorcontrib>Chen, Yang</creatorcontrib><creatorcontrib>Chen, Qi</creatorcontrib><creatorcontrib>Wu, Yunfei</creatorcontrib><creatorcontrib>Zhang, Renjian</creatorcontrib><creatorcontrib>Dusek, Ulrike</creatorcontrib><creatorcontrib>O’Dowd, Colin</creatorcontrib><creatorcontrib>Hoffmann, Thorsten</creatorcontrib><collection>CrossRef</collection><collection>Biotechnology Research Abstracts</collection><collection>Environment Abstracts</collection><collection>Industrial and Applied Microbiology Abstracts (Microbiology A)</collection><collection>Toxicology Abstracts</collection><collection>Technology Research Database</collection><collection>Environmental Sciences and Pollution Management</collection><collection>Engineering Research Database</collection><collection>Biotechnology and BioEngineering Abstracts</collection><collection>Environment Abstracts</collection><jtitle>Environmental science & technology</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Huang, Ru-Jin</au><au>Yang, Lu</au><au>Shen, Jincan</au><au>Yuan, Wei</au><au>Gong, Yuquan</au><au>Guo, Jie</au><au>Cao, Wenjuan</au><au>Duan, Jing</au><au>Ni, Haiyan</au><au>Zhu, Chongshu</au><au>Dai, Wenting</au><au>Li, Yongjie</au><au>Chen, Yang</au><au>Chen, Qi</au><au>Wu, Yunfei</au><au>Zhang, Renjian</au><au>Dusek, Ulrike</au><au>O’Dowd, Colin</au><au>Hoffmann, Thorsten</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Water-Insoluble Organics Dominate Brown Carbon in Wintertime Urban Aerosol of China: Chemical Characteristics and Optical Properties</atitle><jtitle>Environmental science & technology</jtitle><addtitle>Environ. Sci. Technol</addtitle><date>2020-07-07</date><risdate>2020</risdate><volume>54</volume><issue>13</issue><spage>7836</spage><epage>7847</epage><pages>7836-7847</pages><issn>0013-936X</issn><eissn>1520-5851</eissn><abstract>The chromophores responsible for light absorption in atmospheric brown carbon (BrC) are not well characterized, which hinders our understanding of BrC chemistry, the links with optical properties, and accurate model representations of BrC to global climate and atmospheric oxidative capacity. In this study, the light absorption properties and chromophore composition of three BrC fractions of different polarities were characterized for urban aerosol collected in Xi’an and Beijing in winter 2013–2014. These three BrC fractions show large differences in light absorption and chromophore composition, but the chromophores responsible for light absorption are similar in Xi’an and Beijing. Water-insoluble BrC (WI-BrC) fraction dominates the total BrC absorption at 365 nm in both Xi’an (51 ± 5%) and Beijing (62 ± 13%), followed by a humic-like fraction (HULIS-BrC) and high-polarity water-soluble BrC. The major chromophores identified in HULIS-BrC are nitrophenols and carbonyl oxygenated polycyclic aromatic hydrocarbons (OPAHs) with 2–3 aromatic rings (in total 18 species), accounting for 10% and 14% of the light absorption of HULIS-BrC at 365 nm in Xi’an and Beijing, respectively. In comparison, the major chromophores identified in WI-BrC are PAHs and OPAHs with 4–6 aromatic rings (in total 16 species), contributing 6% and 8% of the light absorption of WI-BrC at 365 nm in Xi’an and Beijing, respectively.</abstract><cop>Easton</cop><pub>American Chemical Society</pub><doi>10.1021/acs.est.0c01149</doi><tpages>12</tpages><orcidid>https://orcid.org/0000-0002-4907-9616</orcidid><oa>free_for_read</oa></addata></record> |
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| subjects | Absorption Aerosols Anthropogenic Impacts on the Atmosphere Aromatic compounds Carbon Carbonyl compounds Carbonyls Chromophores Composition Electromagnetic absorption Light Optical properties Polarity Polycyclic aromatic hydrocarbons |
| title | Water-Insoluble Organics Dominate Brown Carbon in Wintertime Urban Aerosol of China: Chemical Characteristics and Optical Properties |
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