Molecular characterization of organic aerosols in urban and forested areas of Paris using high-resolution mass spectrometry

Abstract. In order to study aerosols in environments influenced by anthropogenic and biogenic emissions to variable extents, PM1 samples were collected during summer 2022 in the greater Paris area (ACROSS campaign, Atmospheric Chemistry Of the Suburban Forest, 14 June to 25 July) at two locations that represent the urban Paris and the suburban forested areas. They were analyzed using high-resolution mass spectrometry (HRMS) together with total carbon (TC) with a thermo-optical method. Both sites are compared here to explore differences in aerosol composition from urban and forested environments. The TC analysis shows similar organic carbon (OC) concentrations at both sites (3.2 ± 1.8 µg m−3 for Paris and 2.9 ± 1.5 µg m−3 for Rambouillet) and higher elemental carbon (EC) values in the urban area. Both OC and EC concentrations did not show significant variations for daytime and nighttime conditions. This work highlights the influence of anthropogenic inputs on the chemical composition of urban and forested areas, derived from the presence of CHO and CHON compounds but also the detection of two sulfur-containing compounds (C5H12SO7 and C10H17NSO7), which could be tentatively assigned as organosulfates. A smaller number of aromatic compounds were observed for clean periods that better represent the local biogenic and anthropogenic contributions in Rambouillet and Paris, respectively.

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Publication Details

Journal
Atmospheric chemistry and physics
Published
2025-05-09
DOI
https://doi.org/10.5194/acp-25-4885-2025
Citations
1
Primary Topic
Atmospheric chemistry and aerosols
Type
article
Field-Weighted Citation Impact
1.30

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Molecular characterization of organic aerosols in urban and forested areas of Paris using high-resolution mass spectrometry

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Molecular characterization of organic aerosols in urban and forested areas of Paris using high-resolution mass spectrometry

Ludovico Di Antonio, Olivier Favez, Diana L. Pereira, Antonin Bergé, Servanne Chevaillier, Pascal Zapf, Drew Pronovost, Thomas Bertin, Gael Noyalet, Sergio Harb, C. T. Macias, Alexander Zherebker, Raquel Torres, Bénédicte Picquet‐Varrault, Robin Aujay-Plouzeau, Éric Villenave, Johannes Heuser, Aline Gratien, Claudia Di Biagio, Patrice Coll, Paola Formenti, Jean‐François Doussin, Lelia N. Hawkins, Alexandre Albinet, Sylvain Triquet, Mathieu Cazaunau, Sydney Riley, Vincent Michoud, Chiara Giorio, Stéphanie Alage, Olivier Lauret, Brigitte Language, Cécile Gaimoz, Franck Maisonneuve, C. A. Cantrell, Pauline Pouyes, Manuela Cirtog, Pierre‐Marie Flaud, Emilie Perraudin, Oscar Guillemant, Elie Almarj
article en
1 citations

Abstract

Abstract. In order to study aerosols in environments influenced by anthropogenic and biogenic emissions to variable extents, PM1 samples were collected during summer 2022 in the greater Paris area (ACROSS campaign, Atmospheric Chemistry Of the Suburban Forest, 14 June to 25 July) at two locations that represent the urban Paris and the suburban forested areas. They were analyzed using high-resolution mass spectrometry (HRMS) together with total carbon (TC) with a thermo-optical method. Both sites are compared here to explore differences in aerosol composition from urban and forested environments. The TC analysis shows similar organic carbon (OC) concentrations at both sites (3.2 ± 1.8 µg m−3 for Paris and 2.9 ± 1.5 µg m−3 for Rambouillet) and higher elemental carbon (EC) values in the urban area. Both OC and EC concentrations did not show significant variations for daytime and nighttime conditions. This work highlights the influence of anthropogenic inputs on the chemical composition of urban and forested areas, derived from the presence of CHO and CHON compounds but also the detection of two sulfur-containing compounds (C5H12SO7 and C10H17NSO7), which could be tentatively assigned as organosulfates. A smaller number of aromatic compounds were observed for clean periods that better represent the local biogenic and anthropogenic contributions in Rambouillet and Paris, respectively.

Atmospheric chemistry and physicsVol. 25(9)
École Normale Supérieure Paris-Saclay (FR), Centre National de la Recherche Scientifique (FR), Harvey Mudd College (US), Université de Bordeaux (FR), École Pratique des Hautes Études (FR), Université de Versailles Saint-Quentin-en-Yvelines (FR), Université Paris-Est Créteil (FR), Université Paris Cité (FR), University of Cambridge (GB), Commissariat à l'Énergie Atomique et aux Énergies Alternatives (FR), North-West University (ZA), Université Paris-Saclay (FR), Paris-Est Sup (FR), Environnements et Paléoenvironnements Océaniques et Continentaux (FR), Laboratoire des Sciences du Climat et de l'Environnement (FR), Institut national de l'environnement industriel et des risques (FR), CEA Paris-Saclay (FR), Laboratoire Interuniversitaire des Systèmes Atmosphériques (FR), Laboratoire Techniques, Territoires et Sociétés (FR), Universidad de Huelva (ES)
University of Cambridge, Agence Nationale de la Recherche, Centre National de la Recherche Scientifique
Openalex Percentile: Top 23%
Atmospheric chemistry and aerosols
1.30
DOIOpen Access PDFOpenAlex
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