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
Hauptverfasser: 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
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container_title Nature communications
container_volume 15
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
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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>
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subjects Environmental Sciences
title Local incomplete combustion emissions define the PM 2.5 oxidative potential in Northern India
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