Dr. Imad El Haddad

Group Head Molecular Cluster and Particle Processes
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Telephone
+41 56 310 29 95
Paul Scherrer Institute PSI
Forschungsstrasse 111
5232 Villigen PSI
Switzerland
Digitale Visitenkarte

My vision is to understand and quantify the processes by which anthropogenic emissions have changed the composition and levels of atmospheric pollutants and how these changes affect earth climate and public health. To gain insights into the mechanisms behind these processes and identify pollution sources, we develop and use new online and offline mass spectrometers, which analyze the atmospheric composition on a molecular level and down to 1 Hz time resolution. We deploy these instruments in the laboratory during simulation experiments and in the Field. We collaborate with global modelers and biochemist to quantify the overall impact of air pollution on climate and health.

2018- present Group head, Molecular Cluster and Particle Processes group at the Laboratory of Atmospheric Chemistry (LAC), Paul Scherrer Institut (PSI), Switzerland
2018-2019 Tenured scientist, project leader, deputy head, Molecular Cluster and Particle Processes group at the LAC, PSI, Switzerland
2015-2018 Senior scientist, Smog chamber group at the LAC, PSI, Switzerland
2011-2015 Postdoctoral fellow at the LAC, PSI, Switzerland
2007 – 2011 Ph.D. student in atmospheric chemistry, at "Laboratoire Chimie Provence", Atmospheric Reactivity and Instrumentation group, University of Provence, Marseille, France. Title: Primary and secondary fractions of organic aerosol; Source contribution and atmospheric aging in an urban Mediterranean environment, Marseille, France
2006 – 2007 Second year masters in environmental sciences: analytical chemistry, reactivity and modeling, University of Provence, Marseille, France (with distinction, 1/9).
2005 – 2006 First year masters in general chemistry at the faculty of sciences, in Saint-Joseph University of Beirut (USJ), Lebanon (with distinction, 1/10).
2002 – 2005 Bachelor of science in chemistry at the faculty of sciences, in USJ, Lebanon (with distinction, 1/14).
Identification and quantification of primary and secondary molecular markers in atmospheric aerosol using mass spectrometry techniques (GC/MS, HPLC/APCI-MS2 , HPLC/ESI-MS2).
Source apportionment of organic aerosol in ambient atmospheres using molecular markers, 14C measurements and AMS data combined with statistical models (e.g. Chemical Mass Balance, CMB).
Chemical characterization of main emission sources of hydrocarbons and organic aerosol (e.g. cooking processes, combustion engines, wood burning ...), determination of the related emission factors and quantification of their secondary organic aerosol potential by means of smog chamber experiments.
Characterization of gas phase and in-cloud aqueous phase aging processes and their impact on the molecular marker profiles, on the formation of high molecular weight compounds (i.e. oligomers) and on the organic aerosol functional groups and oxidation state
2007 – 2010 MENRT research fellowship from the French ministry of research
2005 Excellence Scholarship from the University of Saint Joseph as the top 1% students of the faculty of sciences
2005 “Distinction Prize” from the University of Saint Joseph as the best student in the class of 2005.
  • Bhattu D, Tripathi SN, Bhowmik HS, Moschos V, Lee CP, Rauber M, et al.
    Local incomplete combustion emissions define the PM2.5 oxidative potential in Northern India
    Nature Communications. 2024; 15(1): 3517 (13 pp.). https://doi.org/10.1038/s41467-024-47785-5
    DORA PSI
  • Cheung RKY, Qi L, Manousakas MI, Puthussery JV, Zheng Y, Koenig TK, et al.
    Major source categories of PM2.5 oxidative potential in wintertime Beijing and surroundings based on online dithiothreitol-based field measurements
    Science of the Total Environment. 2024; 928: 172345 (14 pp.). https://doi.org/10.1016/j.scitotenv.2024.172345
    DORA PSI
  • El Haddad I, Vienneau D, Daellenbach KR, Modini R, Slowik JG, Upadhyay A, et al.
    Opinion: How will advances in aerosol science inform our understanding of the health impacts of outdoor particulate pollution?
    Atmospheric Chemistry and Physics. 2024; 24(20): 11981-12011. https://doi.org/10.5194/acp-24-11981-2024
    DORA PSI
  • Garner NM, Top J, Mahrt F, El Haddad I, Ammann M, Bell DM
    Iron-containing seed particles enhance α-pinene secondary organic aerosol mass concentration and dimer formation
    Environmental Science and Technology. 2024; 58(38): 16984-16993. https://doi.org/10.1021/acs.est.4c07626
    DORA PSI
  • Li D, Wang D, Caudillo L, Scholz W, Wang M, Tomaz S, et al.
    Ammonium CI-Orbitrap: a tool for characterizing the reactivity of oxygenated organic molecules
    Atmospheric Measurement Techniques. 2024; 17(17): 5413-5428. https://doi.org/10.5194/amt-17-5413-2024
    DORA PSI
  • Li D, Huang W, Wang D, Wang M, Thornton JA, Caudillo L, et al.
    Nitrate radicals suppress biogenic new particle formation from monoterpene oxidation
    Environmental Science and Technology. 2024; 58(3): 1601-1614. https://doi.org/10.1021/acs.est.3c07958
    DORA PSI
  • Li K, Zhang J, Bell DM, Wang T, Lamkaddam H, Cui T, et al.
    Uncovering the dominant contribution of intermediate volatility compounds in secondary organic aerosol formation from biomass-burning emissions
    National Science Review. 2024; 11(3): nwae014 (9 pp.). https://doi.org/10.1093/nsr/nwae014
    DORA PSI
  • Marten R, Xiao M, Wang M, Kong W, He X-C, Stolzenburg D, et al.
    Assessing the importance of nitric acid and ammonia for particle growth in the polluted boundary layer
    Environmental Science: Atmospheres. 2024; 4(2): 265-274. https://doi.org/10.1039/D3EA00001J
    DORA PSI
  • Rörup B, He XC, Shen J, Baalbaki R, Dada L, Sipilä M, et al.
    Temperature, humidity, and ionisation effect of iodine oxoacid nucleation
    Environmental Science: Atmospheres. 2024; 4(5): 531-546. https://doi.org/10.1039/d4ea00013g
    DORA PSI
  • Schervish M, Heinritzi M, Stolzenburg D, Dada L, Wang M, Ye Q, et al.
    Interactions of peroxy radicals from monoterpene and isoprene oxidation simulated in the radical volatility basis set
    Environmental Science: Atmospheres. 2024; 4(7): 740-753. https://doi.org/10.1039/d4ea00056k
    DORA PSI
  • Surdu M, Top J, Yang B, Zhang J, Slowik JG, Prévôt ASH, et al.
    Real-time identification of aerosol-phase carboxylic acid production using extractive electrospray ionization mass spectrometry
    Environmental Science and Technology. 2024; 58: 8857-8866. https://doi.org/10.1021/acs.est.4c01605
    DORA PSI
  • Wang T, Li K, Bell DM, Zhang J, Cui T, Surdu M, et al.
    Large contribution of in-cloud production of secondary organic aerosol from biomass burning emissions
    npj Climate and Atmospheric Science. 2024; 7(1): 149 (9 pp.). https://doi.org/10.1038/s41612-024-00682-6
    DORA PSI
  • Xenofontos C, Kohl M, Ruhl S, Almeida J, Beckmann HM, Caudillo-Plath L, et al.
    The impact of ammonia on particle formation in the Asian Tropopause Aerosol Layer
    npj Climate and Atmospheric Science. 2024; 7(1): 215 (12 pp.). https://doi.org/10.1038/s41612-024-00758-3
    DORA PSI
  • Bell DM, Pospisilova V, Lopez-Hilfiker F, Bertrand A, Xiao M, Zhou X, et al.
    Effect of OH scavengers on the chemical composition of α-pinene secondary organic aerosol
    Environmental Science: Atmospheres. 2023; 3(1): 115-123. https://doi.org/10.1039/d2ea00105e
    DORA PSI
  • Bell DM, Zhang J, Top J, Bogler S, Surdu M, Slowik JG, et al.
    Sensitivity constraints of extractive electrospray for a model system and secondary organic aerosol
    Analytical Chemistry. 2023; 95(37): 13788-13795. https://doi.org/10.1021/acs.analchem.3c00441
    DORA PSI
  • Casotto R, Skiba A, Rauber M, Strähl J, Tobler A, Bhattu D, et al.
    Organic aerosol sources in Krakow, Poland, before implementation of a solid fuel residential heating ban
    Science of the Total Environment. 2023; 855: 158655 (12 pp.). https://doi.org/10.1016/j.scitotenv.2022.158655
    DORA PSI
  • Caudillo L, Surdu M, Lopez B, Wang M, Thoma M, Bräkling S, et al.
    An intercomparison study of four different techniques for measuring the chemical composition of nanoparticles
    Atmospheric Chemistry and Physics. 2023; 23(11): 6613-6631. https://doi.org/10.5194/acp-23-6613-2023
    DORA PSI
  • Dada L, Stolzenburg D, Simon M, Fischer L, Heinritzi M, Wang M, et al.
    Role of sesquiterpenes in biogenic new particle formation
    Science Advances. 2023; 9(36): eadi5297 (15 pp.). https://doi.org/10.1126/sciadv.adi5297
    DORA PSI
  • Daellenbach KR, Manousakas M, Jiang J, Cui T, Chen Y, El Haddad I, et al.
    Organic aerosol sources in the Milan metropolitan area - receptor modelling based on field observations and air quality modelling
    Atmospheric Environment. 2023; 307: 119799 (10 pp.). https://doi.org/10.1016/j.atmosenv.2023.119799
    DORA PSI
  • Finkenzeller H, Iyer S, He X-C, Simon M, Koenig TK, Lee CF, et al.
    The gas-phase formation mechanism of iodic acid as an atmospheric aerosol source
    Nature Chemistry. 2023; 15: 129-135. https://doi.org/10.1038/s41557-022-01067-z
    DORA PSI
  • Graham EL, Wu C, Bell DM, Bertrand A, Haslett SL, Baltensperger U, et al.
    Volatility of aerosol particles from NO3 oxidation of various biogenic organic precursors
    Atmospheric Chemistry and Physics. 2023; 23(13): 7347-7362. https://doi.org/10.5194/acp-23-7347-2023
    DORA PSI
  • He XC, Simon M, Iyer S, Xie HB, Rörup B, Shen J, et al.
    Iodine oxoacids enhance nucleation of sulfuric acid particles in the atmosphere
    Science. 2023; 382(6676): 1308-1314. https://doi.org/10.1126/science.adh2526
    DORA PSI
  • Kirkby J, Amorim A, Baltensperger U, Carslaw KS, Christoudias T, Curtius J, et al.
    Atmospheric new particle formation from the CERN CLOUD experiment
    Nature Geoscience. 2023; 16(11): 948-957. https://doi.org/10.1038/s41561-023-01305-0
    DORA PSI
  • Mishra S, Tripathi SN, Kanawade VP, Haslett SL, Dada L, Ciarelli G, et al.
    Rapid night-time nanoparticle growth in Delhi driven by biomass-burning emissions
    Nature Geoscience. 2023; 16(3): 224-230. https://doi.org/10.1038/s41561-023-01138-x
    DORA PSI
  • Nie W, Yan C, Yang L, Roldin P, Liu Y, Vogel AL, et al.
    NO at low concentration can enhance the formation of highly oxygenated biogenic molecules in the atmosphere
    Nature Communications. 2023; 14(1): 3347 (11 pp.). https://doi.org/10.1038/s41467-023-39066-4
    DORA PSI
  • Pfeifer J, Mahfouz NGA, Schulze BC, Mathot S, Stolzenburg D, Baalbaki R, et al.
    Measurement of the collision rate coefficients between atmospheric ions and multiply charged aerosol particles in the CERN CLOUD chamber
    Atmospheric Chemistry and Physics. 2023; 23(12): 6703-6718. https://doi.org/10.5194/acp-23-6703-2023
    DORA PSI
  • Surdu M, Lamkaddam H, Wang DS, Bell DM, Xiao M, Lee CP, et al.
    Molecular understanding of the enhancement in organic aerosol mass at high relative humidity
    Environmental Science and Technology. 2023; 57(6): 2297-2309. https://doi.org/10.1021/acs.est.2c04587
    DORA PSI
  • Zhang J, Li K, Wang T, Gammelsæter E, Cheung RKY, Surdu M, et al.
    Bulk and molecular-level composition of primary organic aerosol from wood, straw, cow dung, and plastic burning
    Atmospheric Chemistry and Physics. 2023; 23(22): 14561-14576. https://doi.org/10.5194/acp-23-14561-2023
    DORA PSI
  • Amaladhasan DA, Heyn C, Hoyle CR, El Haddad I, Elser M, Pieber SM, et al.
    Modelling the gas-particle partitioning and water uptake of isoprene-derived secondary organic aerosol at high and low relative humidity
    Atmospheric Chemistry and Physics. 2022; 22(1): 215-244. https://doi.org/10.5194/acp-22-215-2022
    DORA PSI
  • Bell DM, Wu C, Bertrand A, Graham E, Schoonbaert J, Giannoukos S, et al.
    Particle-phase processing of α-pinene NO3 secondary organic aerosol in the dark
    Atmospheric Chemistry and Physics. 2022; 22(19): 13167-13182. https://doi.org/10.5194/acp-22-13167-2022
    DORA PSI
  • Bogler S, Daellenbach KR, Bell DM, Prévôt ASH, El Haddad I, Borduas-Dedekind N
    Singlet oxygen seasonality in aqueous PM10 is driven by biomass burning and anthropogenic secondary organic aerosol
    Environmental Science and Technology. 2022; 56(22): 15389-15397. https://doi.org/10.1021/acs.est.2c04554
    DORA PSI
  • Chazeau B, El Haddad I, Canonaco F, Temime-Roussel B, D'Anna B, Gille G, et al.
    Organic aerosol source apportionment by using rolling positive matrix factorization: application to a Mediterranean coastal city
    Atmospheric Environment: X. 2022; 14: 100176 (16 pp.). https://doi.org/10.1016/j.aeaoa.2022.100176
    DORA PSI
  • Chen G, Canonaco F, Tobler A, Aas W, Alastuey A, Allan J, et al.
    European aerosol phenomenology - 8: harmonised source apportionment of organic aerosol using 22 year-long ACSM/AMS datasets
    Environment International. 2022; 166: 107325 (18 pp.). https://doi.org/10.1016/j.envint.2022.107325
    DORA PSI
  • Chen G, Canonaco F, Slowik JG, Daellenbach KR, Tobler A, Petit J-E, et al.
    Real-time source apportionment of organic aerosols in three European cities
    Environmental Science and Technology. 2022; 56(22): 15290-15297. https://doi.org/10.1021/acs.est.2c02509
    DORA PSI
  • Lee CP, Surdu M, Bell DM, Dommen J, Xiao M, Zhou X, et al.
    High-frequency gaseous and particulate chemical characterization using extractive electrospray ionization mass spectrometry (Dual-Phase-EESI-TOF)
    Atmospheric Measurement Techniques. 2022; 15(12): 3747-3760. https://doi.org/10.5194/amt-15-3747-2022
    DORA PSI
  • Manousakas M, Furger M, Daellenbach KR, Canonaco F, Chen G, Tobler A, et al.
    Source identification of the elemental fraction of particulate matter using size segregated, highly time-resolved data and an optimized source apportionment approach
    Atmospheric Environment: X. 2022; 14: 100165 (15 pp.). https://doi.org/10.1016/j.aeaoa.2022.100165
    DORA PSI
  • Marten R, Xiao M, Rörup B, Wang M, Kong W, He X-C, et al.
    Survival of newly formed particles in haze conditions
    Environmental Science: Atmospheres. 2022; 2(3): 491-499. https://doi.org/10.1039/d2ea00007e
    DORA PSI
  • Masalaite A, Byčenkienė S, Pauraitė J, Garbariene I, el Haddad I, Bozzetti C, et al.
    Seasonal observation and source apportionment of carbonaceous aerosol from forested rural site (Lithuania)
    Atmospheric Environment. 2022; 272: 118934 (12 pp.). https://doi.org/10.1016/j.atmosenv.2021.118934
    DORA PSI
  • Moschos V, Schmale J, Aas W, Becagli S, Calzolai G, Eleftheriadis K, et al.
    Elucidating the present-day chemical composition, seasonality and source regions of climate-relevant aerosols across the Arctic land surface
    Environmental Research Letters. 2022; 17(3): 034032 (14 pp.). https://doi.org/10.1088/1748-9326/ac444b
    DORA PSI
  • Moschos V, Dzepina K, Bhattu D, Lamkaddam H, Casotto R, Daellenbach KR, et al.
    Equal abundance of summertime natural and wintertime anthropogenic Arctic organic aerosols
    Nature Geoscience. 2022; 15: 196-202. https://doi.org/10.1038/s41561-021-00891-1
    DORA PSI
  • Qi L, Bozzetti C, Corbin JC, Daellenbach KR, El Haddad I, Zhang Q, et al.
    Source identification and characterization of organic nitrogen in atmospheric aerosols at a suburban site in China
    Science of the Total Environment. 2022; 818: 151800 (11 pp.). https://doi.org/10.1016/j.scitotenv.2021.151800
    DORA PSI
  • Shahne MZ, Arhami M, Hosseini V, El Haddad I
    Particulate emissions of real-world light-duty gasoline vehicle fleet in Iran
    Environmental Pollution. 2022; 292(A): 118303 (11 pp.). https://doi.org/10.1016/j.envpol.2021.118303
    DORA PSI
  • Shen J, Scholz W, He X-C, Zhou P, Marie G, Wang M, et al.
    High gas-phase methanesulfonic acid production in the OH-initiated oxidation of dimethyl sulfide at low temperatures
    Environmental Science and Technology. 2022; 56(19): 13931-13944. https://doi.org/10.1021/acs.est.2c05154
    DORA PSI
  • Tiwari P, Wang T, Indlekofer J, El Haddad I, Biollaz S, Prevot ASH, et al.
    Online detection of trace volatile organic sulfur compounds in a complex biogas mixture with proton-transfer-reaction mass spectrometry
    Renewable Energy. 2022; 196: 1197-1203. https://doi.org/10.1016/j.renene.2022.07.036
    DORA PSI
  • Wang M, Xiao M, Bertozzi B, Marie G, Rörup B, Schulze B, et al.
    Synergistic HNO3-H2SO4-NH3 upper tropospheric particle formation
    Nature. 2022; 605(7910): 483-489. https://doi.org/10.1038/s41586-022-04605-4
    DORA PSI
  • Yazdani A, Dudani N, Takahama S, Bertrand A, Prévôt ASH, El Haddad I, et al.
    Fragment ion-functional group relationships in organic aerosols using aerosol mass spectrometry and mid-infrared spectroscopy
    Atmospheric Measurement Techniques. 2022; 15(9): 2857-2874. https://doi.org/10.5194/amt-15-2857-2022
    DORA PSI
  • Canonaco F, Tobler A, Chen G, Sosedova Y, Slowik JG, Bozzetti C, et al.
    A new method for long-term source apportionment with time-dependent factor profiles and uncertainty assessment using SoFi Pro: application to 1 year of organic aerosol data
    Atmospheric Measurement Techniques. 2021; 14(2): 923-943. https://doi.org/10.5194/amt-14-923-2021
    DORA PSI
  • Cassagnes LE, Leni Z, Håland A, Bell DM, Zhu L, Bertrand A, et al.
    Online monitoring of volatile organic compounds emitted from human bronchial epithelial cells as markers for oxidative stress
    Journal of Breath Research. 2021; 15(1): 016015 (11 pp.). https://doi.org/10.1088/1752-7163/abc055
    DORA PSI
  • Caudillo L, Rörup B, Heinritzi M, Marie G, Simon M, Wagner AC, et al.
    Chemical composition of nanoparticles from α-pinene nucleation and the influence of isoprene and relative humidity at low temperature
    Atmospheric Chemistry and Physics. 2021; 21(22): 17099-17114. https://doi.org/10.5194/acp-21-17099-2021
    DORA PSI
  • Chen G, Sosedova Y, Canonaco F, Fröhlich R, Tobler A, Vlachou A, et al.
    Time-dependent source apportionment of submicron organic aerosol for a rural site in an alpine valley using a rolling positive matrix factorisation (PMF) window
    Atmospheric Chemistry and Physics. 2021; 21(19): 15081-15101. https://doi.org/10.5194/acp-21-15081-2021
    DORA PSI
  • Ciarelli G, Jiang J, El Haddad I, Bigi A, Aksoyoglu S, Prévôt ASH, et al.
    Modeling the effect of reduced traffic due to COVID-19 measures on air quality using a chemical transport model: impacts on the Po Valley and the Swiss Plateau regions
    Environmental Science: Atmospheres. 2021; 1(5): 228-240. https://doi.org/10.1039/D1EA00036E
    DORA PSI
  • He X-C, Iyer S, Sipilä M, Ylisirniö A, Peltola M, Kontkanen J, et al.
    Determination of the collision rate coefficient between charged iodic acid clusters and iodic acid using the appearance time method
    Aerosol Science and Technology. 2021; 55(2): 231-242. https://doi.org/10.1080/02786826.2020.1839013
    DORA PSI
  • He X-C, Tham YJ, Dada L, Wang M, Finkenzeller H, Stolzenburg D, et al.
    Role of iodine oxoacids in atmospheric aerosol nucleation
    Science. 2021; 371(6529): 589-595. https://doi.org/10.1126/science.abe0298
    DORA PSI
  • Jiang J, El Haddad I, Aksoyoglu S, Stefenelli G, Bertrand A, Marchand N, et al.
    Influence of biomass burning vapor wall loss correction on modeling organic aerosols in Europe by CAMx v6.50
    Geoscientific Model Development. 2021; 14(3): 1681-1697. https://doi.org/10.5194/gmd-14-1681-2021
    DORA PSI
  • Lamkaddam H, Dommen J, Ranjithkumar A, Gordon H, Wehrle G, Krechmer J, et al.
    Large contribution to secondary organic aerosol from isoprene cloud chemistry
    Science Advances. 2021; 7(13): eabe2952 (10 pp.). https://doi.org/10.1126/sciadv.abe2952
    DORA PSI
  • Lee CP, Surdu M, Bell DM, Lamkaddam H, Wang M, Ataei F, et al.
    Effects of aerosol size and coating thickness on the molecular detection using extractive electrospray ionization
    Atmospheric Measurement Techniques. 2021; 14(9): 5913-5923. https://doi.org/10.5194/amt-14-5913-2021
    DORA PSI
  • Moschos V, Gysel-Beer M, Modini RL, Corbin JC, Massabò D, Costa C, et al.
    Source-specific light absorption by carbonaceous components in the complex aerosol matrix from yearly filter-based measurements
    Atmospheric Chemistry and Physics. 2021; 21(17): 12809-12833. https://doi.org/10.5194/acp-21-12809-2021
    DORA PSI
  • Ni H, Huang R-J, Pieber SM, Corbin JC, Stefenelli G, Pospisilova V, et al.
    Brown carbon in primary and aged coal combustion emission
    Environmental Science and Technology. 2021; 55(9): 5701-5710. https://doi.org/10.1021/acs.est.0c08084
    DORA PSI
  • Pospisilova V, Bell DM, Lamkaddam H, Bertrand A, Wang L, Bhattu D, et al.
    Photodegradation of α-pinene secondary organic aerosol dominated by moderately oxidized molecules
    Environmental Science and Technology. 2021; 55(10): 6936-6943. https://doi.org/10.1021/acs.est.0c06752
    DORA PSI
  • Rai P, Slowik JG, Furger M, El Haddad I, Visser S, Tong Y, et al.
    Highly time-resolved measurements of element concentrations in PM10 and PM2.5: comparison of Delhi, Beijing, London, and Krakow
    Atmospheric Chemistry and Physics. 2021; 21(2): 717-730. https://doi.org/10.5194/acp-21-717-2021
    DORA PSI
  • Srivastava D, Daellenbach KR, Zhang Y, Bonnaire N, Chazeau B, Perraudin E, et al.
    Comparison of five methodologies to apportion organic aerosol sources during a PM pollution event
    Science of the Total Environment. 2021; 757: 143168 (12 pp.). https://doi.org/10.1016/j.scitotenv.2020.143168
    DORA PSI
  • Surdu M, Pospisilova V, Xiao M, Wang M, Mentler B, Simon M, et al.
    Molecular characterization of ultrafine particles using extractive electrospray time-of-flight mass spectrometry
    Environmental Science: Atmospheres. 2021; 1(6): 434-448. https://doi.org/10.1039/D1EA00050K
    DORA PSI
  • Tomaz S, Wang D, Zabalegui N, Li D, Lamkaddam H, Bachmeier F, et al.
    Structures and reactivity of peroxy radicals and dimeric products revealed by online tandem mass spectrometry
    Nature Communications. 2021; 12: 300 (9 pp.). https://doi.org/10.1038/s41467-020-20532-2
    DORA PSI
  • Wang DS, Lee CP, Krechmer JE, Majluf F, Tong Y, Canagaratna MR, et al.
    Constraining the response factors of an extractive electrospray ionization mass spectrometer for near-molecular aerosol speciation
    Atmospheric Measurement Techniques. 2021; 14(11): 6955-6972. https://doi.org/10.5194/amt-14-6955-2021
    DORA PSI
  • Wu C, Bell DM, Graham EL, Haslett S, Riipinen I, Baltensperger U, et al.
    Photolytically induced changes in composition and volatility of biogenic secondary organic aerosol from nitrate radical oxidation during night-to-day transition
    Atmospheric Chemistry and Physics. 2021; 21(19): 14907-14925. https://doi.org/10.5194/acp-21-14907-2021
    DORA PSI
  • Xiao M, Hoyle CR, Dada L, Stolzenburg D, Kürten A, Wang M, et al.
    The driving factors of new particle formation and growth in the polluted boundary layer
    Atmospheric Chemistry and Physics. 2021; 21(18): 14275-14291. https://doi.org/10.5194/acp-21-14275-2021
    DORA PSI
  • Yazdani A, Dudani N, Takahama S, Bertrand A, Prévôt ASH, El Haddad I, et al.
    Characterization of primary and aged wood burning and coal combustion organic aerosols in an environmental chamber and its implications for atmospheric aerosols
    Atmospheric Chemistry and Physics. 2021; 21(13): 10273-10293. https://doi.org/10.5194/acp-21-10273-2021
    DORA PSI
  • Belis CA, Pernigotti D, Pirovano G, Favez O, Jaffrezo JL, Kuenen J, et al.
    Evaluation of receptor and chemical transport models for PM10 source apportionment
    Atmospheric Environment: X. 2020; 5: 100053 (23 pp.). https://doi.org/10.1016/j.aeaoa.2019.100053
    DORA PSI
  • Daellenbach KR, Uzu G, Jiang J, Cassagnes LE, Leni Z, Vlachou A, et al.
    Sources of particulate-matter air pollution and its oxidative potential in Europe
    Nature. 2020; 587(7834): 414-419. https://doi.org/10.1038/s41586-020-2902-8
    DORA PSI
  • Esmaeilirad S, Lai A, Abbaszade G, Schnelle-Kreis J, Zimmermann R, Uzu G, et al.
    Source apportionment of fine particulate matter in a Middle Eastern Metropolis, Tehran-Iran, using PMF with organic and inorganic markers
    Science of the Total Environment. 2020; 705: 135330 (16 pp.). https://doi.org/10.1016/j.scitotenv.2019.135330
    DORA PSI
  • Heinritzi M, Dada L, Simon M, Stolzenburg D, Wagner AC, Fischer L, et al.
    Molecular understanding of the suppression of new-particle formation by isoprene
    Atmospheric Chemistry and Physics. 2020; 20(20): 11809-11821. https://doi.org/10.5194/acp-20-11809-2020
    DORA PSI
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  • Krapf M, El Haddad I, Bruns EA, Molteni U, Daellenbach KR, Prévôt ASH, et al.
    Labile peroxides in secondary organic aerosol
    Chem. 2016; 1(4): 603-616. https://doi.org/10.1016/j.chempr.2016.09.007
    DORA PSI
  • Pieber SM, El Haddad I, Slowik JG, Canagaratna MR, Jayne JT, Platt SM, et al.
    Inorganic salt interference on CO2+ in aerodyne AMS and ACSM organic aerosol composition studies
    Environmental Science and Technology. 2016; 50(19): 10494-10503. https://doi.org/10.1021/acs.est.6b01035
    DORA PSI
  • Beekmann M, Prévôt ASH, Drewnick F, Sciare J, Pandis SN, Denier van der Gon HAC, et al.
    In situ, satellite measurement and model evidence on the dominant regional contribution to fine particulate matter levels in the Paris megacity
    Atmospheric Chemistry and Physics. 2015; 15(16): 9577-9591. https://doi.org/10.5194/acp-15-9577-2015
    DORA PSI
  • Belis CA, Karagulian F, Amato F, Almeida M, Artaxo P, Beddows DCS, et al.
    A new methodology to assess the performance and uncertainty of source apportionment models II: the results of two European intercomparison exercises
    Atmospheric Environment. 2015; 123: 240-250. https://doi.org/10.1016/j.atmosenv.2015.10.068
    DORA PSI
  • Bruns EA, Krapf M, Orasche J, Huang Y, Zimmermann R, Drinovec L, et al.
    Characterization of primary and secondary wood combustion products generated under different burner loads
    Atmospheric Chemistry and Physics. 2015; 15(5): 2825-2841. https://doi.org/10.5194/acp-15-2825-2015
    DORA PSI
  • Bruns EA, El Haddad I, Keller A, Klein F, Kumar NK, Pieber SM, et al.
    Inter-comparison of laboratory smog chamber and flow reactor systems on organic aerosol yield and composition
    Atmospheric Measurement Techniques. 2015; 8(6): 2315-2332. https://doi.org/10.5194/amt-8-2315-2015
    DORA PSI
  • Suarez-Bertoa R, Zardini AA, Platt SM, Hellebust S, Pieber SM, El Haddad I, et al.
    Primary emissions and secondary organic aerosol formation from the exhaust of a flex-fuel (ethanol) vehicle
    Atmospheric Environment. 2015; 117: 200-211. https://doi.org/10.1016/j.atmosenv.2015.07.006
    DORA PSI
  • Wolf R, El Haddad I, Crippa M, Decesari S, Slowik JG, Poulain L, et al.
    Marine and urban influences on summertime PM2.5 aerosol in the Po basin using mobile measurements
    Atmospheric Environment. 2015; 120: 447-454. https://doi.org/10.1016/j.atmosenv.2015.09.007
    DORA PSI
  • Zhang Y-L, Huang R-J, El Haddad I, Ho K-F, Cao J-J, Han Y, et al.
    Fossil vs. non-fossil sources of fine carbonaceous aerosols in four Chinese cities during the extreme winter haze episode of 2013
    Atmospheric Chemistry and Physics. 2015; 15(3): 1299-1312. https://doi.org/10.5194/acp-15-1299-2015
    DORA PSI
  • Huang R-J, Li W-B, Wang Y-R, Wang QY, Jia WT, Ho K-F, et al.
    Determination of alkylamines in atmospheric aerosol particles: a comparison of gas chromatography-mass spectrometry and ion chromatography approaches
    Atmospheric Measurement Techniques. 2014; 7(7): 2027-2035. https://doi.org/10.5194/amt-7-2027-2014
    DORA PSI
  • Huang R-J, Zhang Y, Bozzetti C, Ho K-F, Cao J-J, Han Y, et al.
    High secondary aerosol contribution to particulate pollution during haze events in China
    Nature. 2014; 514(7521): 218-222. https://doi.org/10.1038/nature13774
    DORA PSI
  • Platt SM, Haddad I, Pieber SM, Huang R-J, Zardini AA, Clairotte M, et al.
    Two-stroke scooters are a dominant source of air pollution in many cities
    Nature Communications. 2014; 5: 3749 (7 pp.). https://doi.org/10.1038/ncomms4749
    DORA PSI
  • Waked A, Afif C, Formenti P, Chevaillier S, El-Haddad I, Doussin J-F, et al.
    Characterization of organic tracer compounds in PM2.5 at a semi-urban site in Beirut, Lebanon
    Atmospheric Research. 2014; 143: 85-94. https://doi.org/10.1016/j.atmosres.2014.02.006
    DORA PSI
  • Zardini AA, Platt SM, Clairotte M, El Haddad I, Temime-Roussel B, Marchand N, et al.
    Effects of alkylate fuel on exhaust emissions and secondary aerosol formation of a 2-stroke and a 4-stroke scooter
    Atmospheric Environment. 2014; 94: 307-315. https://doi.org/10.1016/j.atmosenv.2014.03.024
    DORA PSI
  • Zotter P, El-Haddad I, Zhang Y, Hayes PL, Zhang X, Lin Y-H, et al.
    Diurnal cycle of fossil and nonfossil carbon using radiocarbon analyses during CalNex
    Journal of Geophysical Research D: Atmospheres. 2014; 119(11): 6818-6835. https://doi.org/10.1002/2013JD021114
    DORA PSI
  • Zotter P, Ciobanu VG, Zhang YL, El-Haddad I, Macchia M, Daellenbach KR, et al.
    Radiocarbon analysis of elemental and organic carbon in Switzerland during winter-smog episodes from 2008 to 2012-Part 1: source apportionment and spatial variability
    Atmospheric Chemistry and Physics. 2014; 14(24): 13551-13570. https://doi.org/10.5194/acp-14-13551-2014
    DORA PSI
  • Baltensperger U, Bruns E, Dommen J, El Haddad I, Heringa MF, Prévôt ASH, et al.
    Holzfeuerungen: eine bedeutende Quelle von Feinstaub in der Schweiz
    Schweizerische Zeitschrift für Forstwesen. 2013; 164(12): 420-427. https://doi.org/10.3188/szf.2013.0420
    DORA PSI
  • Crippa M, El Haddad I, Slowik JG, DeCarlo PF, Mohr C, Heringa MF, et al.
    Identification of marine and continental aerosol sources in Paris using high resolution aerosol mass spectrometry
    Journal of Geophysical Research D: Atmospheres. 2013; 118(4): 1950-1963. https://doi.org/10.1002/jgrd.50151
    DORA PSI
  • Crippa M, Canonaco F, Slowik JG, El Haddad I, DeCarlo PF, Mohr C, et al.
    Primary and secondary organic aerosol origin by combined gas-particle phase source apportionment
    Atmospheric Chemistry and Physics. 2013; 13(16): 8411-8426. https://doi.org/10.5194/acp-13-8411-2013
    DORA PSI
  • El Haddad I, Marchand N, D'Anna B, Jaffrezo JL, Wortham H
    Functional group composition of organic aerosol from combustion emissions and secondary processes at two contrasted urban environments
    Atmospheric Environment. 2013; 75: 308-320. https://doi.org/10.1016/j.atmosenv.2013.04.019
    DORA PSI
  • El Haddad I, D'Anna B, Temime-Roussel B, Nicolas M, Boreave A, Favez O, et al.
    Towards a better understanding of the origins, chemical composition and aging of oxygenated organic aerosols: case study of a Mediterranean industrialized environment, Marseille
    Atmospheric Chemistry and Physics. 2013; 13(15): 7875-7894. https://doi.org/10.5194/acp-13-7875-2013
    DORA PSI
  • Platt SM, El Haddad I, Zardini AA, Clairotte M, Astorga C, Wolf R, et al.
    Secondary organic aerosol formation from gasoline vehicle emissions in a new mobile environmental reaction chamber
    Atmospheric Chemistry and Physics. 2013; 13(18): 9141-9158. https://doi.org/10.5194/acp-13-9141-2013
    DORA PSI
  • Waked A, Afif C, Brioude J, Formenti P, Chevaillier S, El Haddad I, et al.
    Composition and source apportionment of organic aerosol in Beirut, Lebanon, during winter 2012
    Aerosol Science and Technology. 2013; 47(11): 1258-1266. https://doi.org/10.1080/02786826.2013.831975
    DORA PSI
  • Jaffrezo J-L, Piot C, Besombes J-L, Marchand N, El Haddad I, Favez O, et al.
    L'apport des méthodes d'analyses chimiques des PM pour la connaissance des sources d'émission. Chemical analysis of atmospheric PM and improvment of the knowledge on emissions sources
    Pollution Atmosphérique. 2012;(Numero Spécial): 122-135.
    DORA PSI
  • Liu Y, Siekmann F, Renard P, El Zein A, Salque G, El Haddad I, et al.
    Oligomer and SOA formation through aqueous phase photooxidation of methacrolein and methyl vinyl ketone
    Atmospheric Environment. 2012; 49: 123-129. https://doi.org/10.1016/j.atmosenv.2011.12.012
    DORA PSI
  • Piot C, Jaffrezo J-L, Cozic J, Pissot N, El Haddad I, Marchand N, et al.
    Quantification of levoglucosan and its isomers by High Performance Liquid Chromatography-electrospray ionization tandem mass spectrometry and its applications to atmospheric and soil samples
    Atmospheric Measurement Techniques. 2012; 5(1): 141-148. https://doi.org/10.5194/amt-5-141-2012
    DORA PSI
  • Baduel C, Monge ME, Voisin D, Jaffrezo J-L, George C, Haddad IE, et al.
    Oxidation of atmospheric humic like substances by ozone: a kinetic and structural analysis approach
    Environmental Science and Technology. 2011; 45(12): 5238-5244. https://doi.org/10.1021/es200587z
    DORA PSI