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Bhattu, D.* ; Tripathi, S.N.* ; Bhowmik, H.S.* ; Moschos, V.* ; Lee, C.P.* ; Rauber, M.M.* ; Salazar, G.A.* ; Abbaszade, G. ; Cui, T.* ; Slowik, J.G.* ; Vats, P.* ; Mishra, S.* ; Lalchandani, V.* ; Satish, R.* ; Rai, P.* ; Casotto, R.* ; Tobler, A.* ; Kumar, V.* ; Hao, Y.* ; Qi, L.* ; Khare, P.* ; Manousakas, M.I.* ; Wang, Q.* ; Han, Y.* ; Tian, J.* ; Darfeuil, S.* ; Minguillon, M.C.* ; Hueglin, C.* ; Conil, S.* ; Rastogi, N.* ; Srivastava, A.K.* ; Ganguly, D.* ; Bjelic, S.* ; Canonaco, F.* ; Schnelle-Kreis, J. ; Dominutti, P.A.* ; Jaffrezo, J.L.* ; Szidat, S.* ; Chen, Y.* ; Cao, J.* ; Baltensperger, U.* ; Uzu, G.* ; Daellenbach, K.R.* ; El Haddad, I.* ; Prévôt, A.S.H.*

Local incomplete combustion emissions define the PM2.5 oxidative potential in Northern India.

Nat. Commun. 15:3517 (2024)
Publ. Version/Full Text DOI PMC
Open Access Gold
Creative Commons Lizenzvertrag
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.
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Publication type Article: Journal article
Document type Scientific Article
Keywords Positive Matrix Factorization; Source Apportionment; Organic Aerosol; Multilinear Engine; Air-pollution; Mass; Radiocarbon; Matter; Trends; Delhi
Language english
Publication Year 2024
HGF-reported in Year 2024
ISSN (print) / ISBN 2041-1723
e-ISSN 2041-1723
Journal Nature Communications
Quellenangaben Volume: 15, Issue: 1, Pages: , Article Number: 3517 Supplement: ,
Publisher Nature Publishing Group
Publishing Place London
Reviewing status Peer reviewed
Institute(s) Cooperation Group Comprehensive Molecular Analytics (CMA)
POF-Topic(s) 30202 - Environmental Health
Research field(s) Environmental Sciences
PSP Element(s) G-504500-001
Grants
Central Pollution Control Board, Government of India
J.C. Bose National Fellowship under the aegis of Science and Engineering Research Board, Department of Science and Technology, Government of India
Open Philanthropy
Clean Air Fund
Ultra-high resolution mass spectrometer
French Research Agency
Predictair- FUGA Grant
Department of Space, Government of India
Swiss National Science Foundation Ambizione
Predictair- FUGA Grant, ACME
Swiss National Science Foundation
Swiss National Science Foundation Ambizione grant
SDC Clean-Air-China Program
Swiss National Science Foundation for the project MOLORG
French Research Agency - ANR
Swiss Development Cooperation (SDC) Clean Air Project in India
DOI 10.1038/s41467-024-47785-5
WOS ID 001211008800009
Scopus ID 85191331044
PubMed ID 38664406
Erfassungsdatum 2024-06-10
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