• photosensitized formation of secondary organic aerosols

    Photosensitized Formation of Secondary Organic Aerosols

    Photosensitized production of marine secondary organic aerosol was studied in a custom-built multiphase atmospheric simulation chamber. The experimental chamber contained water, humic acid (1−10 mg L−1) as a proxy for dissolved organic matter, and nonanoic acid (0.1−10 mM), a fatty acid proxy

  • photosensitized formation of secondary organic aerosols

    Photosensitized Formation of Secondary Organic Aerosols

    In this study, we evaluated photosensitized chemistry at the air–sea interface as a source of secondary organic aerosols (SOA). Our results show that, in addition to biogenic emissions, abiotic processes could also be important in the marine boundary layer. Photosensitized production of marine secondary organic aerosol was studied in a custom-built multiphase atmospheric simulation chamber.

  • photosensitized formation of secondary organic aerosols

    Photosensitized Formation of Secondary Organic Aerosols

    In this study, we evaluated photosensitized chemistry at the air-sea interface as a source of secondary organic aerosols (SOA). Our results show that, in addition to biogenic emissions, abiotic...

  • modeling photosensitized secondary organic aerosol

    Modeling Photosensitized Secondary Organic Aerosol

    Photosensitized reactions involving imidazole-2-carboxaldehyde (IC) have been experimentally observed to contribute to secondary organic aerosol (SOA) growth. However, the extent of photosensitized reactions in ambient aerosols remains poorly understood and unaccounted for in atmospheric models.

  • photosensitized formation of secondary organic aerosols

    Photosensitized Formation of Secondary Organic Aerosols

    Photosensitized Formation of Secondary Organic Aerosols above the Air/Water Interface

  • photosensitized formation of secondary organic aerosols

    Photosensitized Formation of Secondary Organic Aerosols

    Download PDF: Sorry, we are unable to provide the full text but you may find it at the following location(s): doi.org/10.1021/acs.est (external link) http

  • photosensitized formation of secondary organic aerosols

    Photosensitized Formation of Secondary Organic Aerosols

    Photosensitized production of marine secondary organic aerosol was studied in a custom-built multiphase atmospheric simulation chamber. The experimental chamber contained water, humic acid (1-10 mg L-1) as a proxy for dissolved organic matter, and nonanoic acid (0.1-10 mM), a fatty acid proxy which formed an organic film at the air-water interface. Dark secondary reaction with ozone after

  • modeling photosensitized secondary organic aerosol

    Modeling Photosensitized Secondary Organic Aerosol

    05.07.2017· Photosensitized reactions involving imidazole-2-carboxaldehyde (IC) have been experimentally observed to contribute to secondary organic aerosol (SOA) growth. However, the extent of photosensitized reactions in ambient aerosols remains poorly understood and unaccounted for in atmospheric models.

  • supporting information photosensitized formation of

    Supporting Information Photosensitized formation of

    Photosensitized formation of secondary organic aerosols above the air/water interface . F. Bernard1,2,3, R. Ciuraru1,4, A. Boréave1, C. George1* 1Université Lyon 1, F-69626, France; CNRS, UMR5256, IRCELYON, Institut de recherches sur la catalyse et l’environnement de Lyon, Villeurbanne, F-69626, France . Now at: 2Earth System Research Laboratory, Chemical Sciences Division, National

  • secondary organic aerosol

    Secondary organic aerosol

    In contrast to primary organic aerosols, which are emitted directly from the biosphere, secondary organic aerosols are either formed via homogeneous nucleation through the successive oxidation of gas -phase organic compounds, or through condensation on pre-existing particles.

  • photosensitized formation of secondary organic

    Photosensitized Formation of Secondary Organic

    Photosensitized Formation of Secondary Organic Aerosols above the Air/Water Interface

  • modeling photosensitized secondary organic aerosol

    Modeling Photosensitized Secondary Organic Aerosol

    Photosensitized reactions involving imidazole-2-carboxaldehyde (IC) have been experimentally observed to contribute to secondary organic aerosol (SOA) growth. However, the extent of photosensitized reactions in ambient aerosols remains poorly understood and unaccounted for in atmospheric models. Here we use GAMMA 4.0, a photochemical box model that couples gas-phase and aqueous-phase aerosol

  • organic aerosol formation photo-enhanced by the

    Organic aerosol formation photo-enhanced by the

    Secondary organic aerosols (SOA), which are produced by the transformations of volatile organic compounds in the atmosphere, play a central role in air quality, public health, visibility and climate, but their formation and aging remain poorly characterized. This study evidences a new mechanism for SOA formation based on photosensitized particulate-phase chemistry.

  • modeling photosensitized secondary organic aerosol

    Modeling Photosensitized Secondary Organic Aerosol

    Request PDF Modeling Photosensitized Secondary Organic Aerosol Formation in Laboratory and Ambient Aerosols Photosensitized reactions involving imidazole-2-carboxaldehyde (IC) have been

  • photosensitized reactions as a source of secondary

    Photosensitized reactions as a source of secondary

    Secondary organic aerosols (SOA) play an important role in air quality. Despite the important number of studies on the formation and aging of SOA, this field remains poorly characterized. It was shown that organic aerosol formation is enhanced by the presence of photosensitizers in aerosols (1). Therefore, this study is focused on understanding the photosensitized

  • modeling photosensitized secondary organic aerosol

    Modeling Photosensitized Secondary Organic Aerosol

    Modeling Photosensitized Secondary Organic Aerosol Formation in Laboratory and Ambient Aerosols Author: Tsui, William G., Rao, Yi, Dai, Hai-Lung, McNeill, V. Faye Source: Environmental Science & Technology 2017 v.51 no.13 pp. 7496-7501 ISSN: 1520-5851 Subject: aerosols, alpha-pinene, beta-pinene, free radicals, gases, isoprene, limonene, models,

  • photosensitized formation of secondary organic

    Photosensitized Formation of Secondary Organic

    Download PDF: Sorry, we are unable to provide the full text but you may find it at the following location(s): doi.org/10.1021/acs.est (external link) http

  • enhanced aqueous-phase formation of secondary

    Enhanced aqueous-phase formation of secondary

    01.01.2020· This study reveals the impact of biomass burning (BB) on secondary organic aerosols (SOA) formation in the North China Plain (NCP). Filter samples were analyzed for secondary inorganic aerosols (SIA), oxalic acid (C 2) and related aqueous-phase SOA compounds (aqSOA), stable carbon isotope composition of C 2 (δ 13 C(C 2)) and aerosol

  • secondary organic aerosol

    Secondary organic aerosol

    A secondary organic aerosol (SOA) is a molecule produced via oxidation over several generations of a parent organic molecule. In contrast to primary organic aerosols, which are emitted directly from the biosphere, secondary organic aerosols are either formed via homogeneous nucleation through the successive oxidation of gas-phase organic compounds,

  • archive ouverte hal halogenated organic compounds

    Archive ouverte HAL Halogenated organic compounds

    Moreover, they could be also precursor for secondary organic aerosol formation like non-halogenated VOCs founded by Bernard et al.2. This contribution will highlight our recent findings on these processes. 1 Ciararu, Fine et al., 2015, Scientific reports, 5, 12741 2 Bernard, Ciararu et al., 2016, Environ. Sci. Technol., 50, 8678-8686 . Air/water interfaces are omnipresent in the

  • organic aerosol formation photo-enhanced by the

    Organic aerosol formation photo-enhanced by the

    Secondary organic aerosols (SOA), which are produced by the transformations of volatile organic compounds in the atmosphere, play a central role in air quality, public health, visibility and climate, but their formation and aging remain poorly characterized. This study evidences a new mechanism for SOA formation based on photosensitized particulate-phase chemistry. Experiments were performed

  • enhanced aqueous-phase formation of secondary organic

    Enhanced aqueous-phase formation of secondary organic

    01.01.2020· This study reveals the impact of biomass burning (BB) on secondary organic aerosols (SOA) formation in the North China Plain (NCP). Filter samples were analyzed for secondary inorganic aerosols (SIA), oxalic acid (C 2) and related aqueous-phase SOA compounds (aqSOA), stable carbon isotope composition of C 2 (δ 13 C(C 2)) and aerosol liquid water content (ALWC).

  • modeling photosensitized secondary organic aerosol

    Modeling Photosensitized Secondary Organic Aerosol

    Modeling Photosensitized Secondary Organic Aerosol Formation in Laboratory and Ambient Aerosols

  • organic aerosol formation photoenhanced by the formation

    Organic Aerosol Formation Photoenhanced by the Formation

    Organic Aerosol Formation Photoenhanced by the Formation of Secondary Photo-sensitizers in ageing Aerosols Kifle Z. AREGAHEGN, Barbara NOZIÈRE and Christian GEORGE Université de Lyon; université Lyon 1; CNRS, UMR5256, IRCELYON, Institut de recherches sur la catalyse et l’environnement de Lyon, Villeurbanne, F-69626, France.

  • secondary organic aerosols mcneill group @ columbia

    secondary organic aerosols McNeill Group @ Columbia

    On April 8, 2020 McNeill Group member William Tsui successfully defended his PhD thesis, entitled “Simulating Aqueous Secondary Organic Aerosol Formation and Cloudwater Chemistry in Gas-Aerosol Model for Mechanism Analysis.” Read More. News; New Publication: Impact of Aerosol-Cloud Cycling on Aqueous Secondary Organic Aerosol Formation. Posted on November 13, 2019

  • photosensitized formation of secondary organic

    Photosensitized formation of secondary organic

    Photosensitized formation of secondary organic aerosols above the air/water interface . François Bernard 1 Raluca Ciuraru 2 A. Boreave 3 C. George 4 Détails. 1 LRRS Laboratoire de Recherche sur la Réactivité des Solides . 2 CARE IRCELYON-Caractérisation et remédiation des polluants dans l'air et l'eau . IRCELYON Institut de recherches sur la catalyse et l'environnement de Lyon. 3

  • interfacial photochemistry at the ocean surface is a

    Interfacial photochemistry at the ocean surface is a

    29.05.2018· Estimating secondary organic aerosol formation. As depicted in Supplementary Fig. 7, the VOC module described above is coupled to an SOA module, which we utilized to

  • parameterization of the formation potential of secondary

    Parameterization of the formation potential of secondary

    For secondary organic aerosols, the results of smog chamber experiments are used to estimate the fraction of ROG that is converted into aerosols, called the fractional aerosol coefficient. An ‘emission parameter’ for secondary organic aerosol can thus be calculated for each ROG. This emission parameter is simply taken as the product of the ROG emission factor and the fractional aerosol

  • feasibility of photosensitized reactions with secondary

    Feasibility of Photosensitized Reactions with Secondary

    Feasibility of Photosensitized Reactions with Secondary Organic Aerosol Particles in the Presence of Volatile Organic Compounds Published as part of The Journal of Physical Chemistry virtual special issue “Veronica Vaida Festschrift”. Kurtis T. Malecha and Sergey A. Nizkorodov* Department of Chemistry, University of California, Irvine, California 92697-2025, United States * S Supporting

  • photosensitized production of functionalized

    Photosensitized production of functionalized

    Through these results, we have demonstrated formation of functionalized and unsaturated compounds at the air–water interface arising from the photosensitized degradation of organic surfactants

  • feasibility of photosensitized reactions with secondary

    Feasibility of Photosensitized Reactions with Secondary

    Feasibility of Photosensitized Reactions with Secondary Organic Aerosol Particles in the Presence of Volatile Organic Compounds Published as part of The Journal of Physical Chemistry virtual special issue “Veronica Vaida Festschrift”. Kurtis T. Malecha and Sergey A. Nizkorodov* Department of Chemistry, University of California, Irvine, California 92697-2025, United States * S Supporting

  • organic aerosol formation photoenhanced by the

    Organic Aerosol Formation Photoenhanced by the

    Secondary organic aerosols (SOA), which are produced by the transformations of volatile organic compounds in the atmosphere, play a central role in air quality, public health, visibility and

  • archive ouverte hal organic aerosol formation photo

    Archive ouverte HAL Organic aerosol formation photo

    Secondary organic aerosols (SOA), which are produced by the transformations of volatile organic compounds in the atmosphere, play a central role in air quality, public health, visibility and climate, but their formation and aging remain poorly characterized. This study evidences a new mechanism for SOA formation based on photosensitized particulate-phase chemistry.

  • parameterization of the formation potential of secondary

    Parameterization of the formation potential of secondary

    For secondary organic aerosols, the results of smog chamber experiments are used to estimate the fraction of ROG that is converted into aerosols, called the fractional aerosol coefficient. An 'emission parameter' for secondary organic aerosol can thus be calculated for each ROG. This emission parameter is simply taken as the product of the ROG emission factor and the fractional aerosol

  • carbenium ion-mediated oligomerization of methylglyoxal

    Carbenium ion-mediated oligomerization of methylglyoxal

    02.06.2020· Secondary organic aerosol (SOA) represents a major constituent of tropospheric fine particulate matter, with profound implications for human health and climate. However, the chemical mechanisms leading to SOA formation remain uncertain, and atmospheric models consistently underpredict the global SOA budget. Small α-dicarbonyls, such as methylglyoxal, are ubiquitous in the

  • interfacial photochemistry at the ocean surface is a

    Interfacial photochemistry at the ocean surface is a

    29.05.2018· Estimating secondary organic aerosol formation. As depicted in Supplementary Fig. 7, the VOC module described above is coupled to an SOA module, which we utilized to

  • modeling aqueous secondary organic aerosol formation

    Modeling Aqueous Secondary Organic Aerosol Formation

    Overview. GAMMA (Gas-Aerosol Model for Mechanism Analysis) is a photochemical box model that features detailed, coupled gas- and aqueous aerosol-phase chemistry. GAMMA was originally designed to allow speciated prediction of secondary organic aerosol (SOA) and organosulfate formation in the aqueous aerosol phase under ambient or laboratory conditions (McNeill et al., 2012).

  • secondary organic aerosol formation

    Secondary organic aerosol formation

    SOA formation was calculated using a multicomponent gas‐particle partitioning model that involves oxidation of 51 SOA‐precursor VOCs (VOC SOA; 23 aromatics, 13 alkenes, 15 alkanes) to produce semivolatile and non‐volatile secondary organic gases (SOG) that partition into the aerosol phase as a function of temperature, volatility and available OA volume.

  • chemistry of secondary organic aerosol: formation

    Chemistry of secondary organic aerosol: Formation

    01.05.2008· Secondary organic aerosol (SOA), particulate matter composed of compounds formed from the atmospheric transformation of organic species, accounts for a substantial fraction of tropospheric aerosol. The formation of low-volatility (semivolatile and possibly nonvolatile) compounds that make up SOA is governed by a complex series of reactions of a large number of organic

  • the formation, properties and impact of secondary organic

    The formation, properties and impact of secondary organic

    Abstract. Secondary organic aerosol (SOA) accounts for a significant fraction of ambient tropospheric aerosol and a detailed knowledge of the formation, properties and trans-formation of SOA is therefore required to evaluate its im-pact on atmospheric processes, climate and human health. The chemical and physical processes associated with SOA