Local incomplete combustion emissions define the PM 2.5 oxidative potential in Northern India
The oxidative potential (OP) of particulate matter (PM) is a major driver of PM-associated health effects. In India, the emission sources defining PM-OP, and their local/regional nature, are yet to be established. Here, to address this gap we determine the geographical origin, sources of PM, and its...
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Veröffentlicht in: | Nature communications 2024-04, Vol.15 (1), p.3517 |
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creator | Bhattu, Deepika Tripathi, Sachchida Nand Bhowmik, Himadri Sekhar Moschos, Vaios Lee, Chuan Ping Rauber, Martin Salazar, Gary Abbaszade, Gülcin Cui, Tianqu Slowik, Jay G Vats, Pawan Mishra, Suneeti Lalchandani, Vipul Satish, Rangu Rai, Pragati Casotto, Roberto Tobler, Anna Kumar, Varun Hao, Yufang Qi, Lu Khare, Peeyush Manousakas, Manousos Ioannis Wang, Qiyuan Han, Yuemei Tian, Jie Darfeuil, Sophie Minguillon, Mari Cruz Hueglin, Christoph Conil, Sébastien Rastogi, Neeraj Srivastava, Atul Kumar Ganguly, Dilip Bjelic, Sasa Canonaco, Francesco Schnelle-Kreis, Jürgen Dominutti, Pamela A Jaffrezo, Jean-Luc Szidat, Sönke Chen, Yang Cao, Junji Baltensperger, Urs Uzu, Gaëlle Daellenbach, Kaspar R El Haddad, Imad Prévôt, André S H |
description | The oxidative potential (OP) of particulate matter (PM) is a major driver of PM-associated health effects. In India, the emission sources defining PM-OP, and their local/regional nature, are yet to be established. Here, to address this gap we determine the geographical origin, sources of PM, and its OP at five Indo-Gangetic Plain sites inside and outside Delhi. Our findings reveal that although uniformly high PM concentrations are recorded across the entire region, local emission sources and formation processes dominate PM pollution. Specifically, ammonium chloride, and organic aerosols (OA) from traffic exhaust, residential heating, and oxidation of unsaturated vapors from fossil fuels are the dominant PM sources inside Delhi. Ammonium sulfate and nitrate, and secondary OA from biomass burning vapors, are produced outside Delhi. Nevertheless, PM-OP is overwhelmingly driven by OA from incomplete combustion of biomass and fossil fuels, including traffic. These findings suggest that addressing local inefficient combustion processes can effectively mitigate PM health exposure in northern India. |
doi_str_mv | 10.1038/s41467-024-47785-5 |
format | Article |
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In India, the emission sources defining PM-OP, and their local/regional nature, are yet to be established. Here, to address this gap we determine the geographical origin, sources of PM, and its OP at five Indo-Gangetic Plain sites inside and outside Delhi. Our findings reveal that although uniformly high PM concentrations are recorded across the entire region, local emission sources and formation processes dominate PM pollution. Specifically, ammonium chloride, and organic aerosols (OA) from traffic exhaust, residential heating, and oxidation of unsaturated vapors from fossil fuels are the dominant PM sources inside Delhi. Ammonium sulfate and nitrate, and secondary OA from biomass burning vapors, are produced outside Delhi. Nevertheless, PM-OP is overwhelmingly driven by OA from incomplete combustion of biomass and fossil fuels, including traffic. 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Ping</au><au>Rauber, Martin</au><au>Salazar, Gary</au><au>Abbaszade, Gülcin</au><au>Cui, Tianqu</au><au>Slowik, Jay G</au><au>Vats, Pawan</au><au>Mishra, Suneeti</au><au>Lalchandani, Vipul</au><au>Satish, Rangu</au><au>Rai, Pragati</au><au>Casotto, Roberto</au><au>Tobler, Anna</au><au>Kumar, Varun</au><au>Hao, Yufang</au><au>Qi, Lu</au><au>Khare, Peeyush</au><au>Manousakas, Manousos Ioannis</au><au>Wang, Qiyuan</au><au>Han, Yuemei</au><au>Tian, Jie</au><au>Darfeuil, Sophie</au><au>Minguillon, Mari Cruz</au><au>Hueglin, Christoph</au><au>Conil, Sébastien</au><au>Rastogi, Neeraj</au><au>Srivastava, Atul Kumar</au><au>Ganguly, Dilip</au><au>Bjelic, Sasa</au><au>Canonaco, Francesco</au><au>Schnelle-Kreis, Jürgen</au><au>Dominutti, Pamela A</au><au>Jaffrezo, Jean-Luc</au><au>Szidat, Sönke</au><au>Chen, Yang</au><au>Cao, Junji</au><au>Baltensperger, Urs</au><au>Uzu, Gaëlle</au><au>Daellenbach, Kaspar R</au><au>El Haddad, Imad</au><au>Prévôt, André S H</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Local incomplete combustion emissions define the PM 2.5 oxidative potential in Northern India</atitle><jtitle>Nature communications</jtitle><addtitle>Nat Commun</addtitle><date>2024-04-25</date><risdate>2024</risdate><volume>15</volume><issue>1</issue><spage>3517</spage><pages>3517-</pages><issn>2041-1723</issn><eissn>2041-1723</eissn><abstract>The oxidative potential (OP) of particulate matter (PM) is a major driver of PM-associated health effects. In India, the emission sources defining PM-OP, and their local/regional nature, are yet to be established. Here, to address this gap we determine the geographical origin, sources of PM, and its OP at five Indo-Gangetic Plain sites inside and outside Delhi. Our findings reveal that although uniformly high PM concentrations are recorded across the entire region, local emission sources and formation processes dominate PM pollution. Specifically, ammonium chloride, and organic aerosols (OA) from traffic exhaust, residential heating, and oxidation of unsaturated vapors from fossil fuels are the dominant PM sources inside Delhi. Ammonium sulfate and nitrate, and secondary OA from biomass burning vapors, are produced outside Delhi. Nevertheless, PM-OP is overwhelmingly driven by OA from incomplete combustion of biomass and fossil fuels, including traffic. These findings suggest that addressing local inefficient combustion processes can effectively mitigate PM health exposure in northern India.</abstract><cop>England</cop><pub>Nature Publishing Group</pub><pmid>38664406</pmid><doi>10.1038/s41467-024-47785-5</doi><orcidid>https://orcid.org/0000-0001-5282-0156</orcidid><orcidid>https://orcid.org/0000-0003-3810-3972</orcidid><orcidid>https://orcid.org/0000-0002-1824-6207</orcidid><orcidid>https://orcid.org/0000-0002-6582-0742</orcidid><orcidid>https://orcid.org/0000-0002-5044-8386</orcidid><orcidid>https://orcid.org/0000-0002-2461-7238</orcidid><orcidid>https://orcid.org/0009-0000-6159-6854</orcidid><orcidid>https://orcid.org/0000-0003-1078-1296</orcidid><orcidid>https://orcid.org/0000-0001-6767-821X</orcidid><orcidid>https://orcid.org/0000-0002-7720-0233</orcidid><orcidid>https://orcid.org/0000-0002-9805-3201</orcidid><orcidid>https://orcid.org/0000-0003-0051-8179</orcidid><orcidid>https://orcid.org/0000-0003-1246-6396</orcidid><orcidid>https://orcid.org/0000-0002-6973-522X</orcidid><orcidid>https://orcid.org/0000-0001-8495-6461</orcidid><orcidid>https://orcid.org/0000-0002-9876-6383</orcidid><orcidid>https://orcid.org/0000-0003-3597-190X</orcidid><orcidid>https://orcid.org/0000-0002-0425-5997</orcidid><orcidid>https://orcid.org/0000-0002-0725-7517</orcidid><orcidid>https://orcid.org/0000-0002-6402-4680</orcidid><orcidid>https://orcid.org/0000-0002-5764-0231</orcidid><orcidid>https://orcid.org/0000-0003-0079-8713</orcidid><orcidid>https://orcid.org/0000-0002-6251-4117</orcidid><orcidid>https://orcid.org/0000-0003-1111-0881</orcidid><orcidid>https://orcid.org/0000-0002-9243-8194</orcidid><orcidid>https://orcid.org/0000-0002-0062-234X</orcidid><orcidid>https://orcid.org/0000-0003-2669-9633</orcidid><orcidid>https://orcid.org/0000-0002-5464-0391</orcidid><orcidid>https://orcid.org/0000-0003-4846-2303</orcidid><orcidid>https://orcid.org/0000-0002-0021-4813</orcidid><orcidid>https://orcid.org/0000-0003-4532-7827</orcidid><orcidid>https://orcid.org/0000-0003-3307-2548</orcidid><orcidid>https://orcid.org/0000-0002-6921-5160</orcidid><oa>free_for_read</oa></addata></record> |
fulltext | fulltext |
identifier | ISSN: 2041-1723 |
ispartof | Nature communications, 2024-04, Vol.15 (1), p.3517 |
issn | 2041-1723 2041-1723 |
language | eng |
recordid | cdi_hal_primary_oai_HAL_hal_04559829v1 |
source | Nature Open Access; DOAJ Directory of Open Access Journals; Elektronische Zeitschriftenbibliothek - Frei zugängliche E-Journals; PubMed Central; Alma/SFX Local Collection; Springer Nature OA/Free Journals |
subjects | Environmental Sciences |
title | Local incomplete combustion emissions define the PM 2.5 oxidative potential in Northern India |
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