Surface-Active Organics in Atmospheric Aerosols

McNeill, V. Faye; Sareen, Neha; Schwier, A. N.

doi:10.1007/128_2012_404

Cited by 83 publications

(129 citation statements)

References 317 publications

(412 reference statements)

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“…ammonium salts). Most organic solutes lower the surface tension of pure water 3 by adsorbing at the surface. Inorganic electrolytes tend to remain in the solution interior to due attractive ion-water interactions, which results in a relative destabilizing of water interactions at the surface over in the bulk and an increase in surface tension with respect to pure water.…”

Section: Introductionmentioning

confidence: 99%

Statistical Thermodynamic Model for Surface Tension of Organic and Inorganic Aqueous Mixtures

et al. 2016

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General rightsThis document is made available in accordance with publisher policies. Please cite only the published version using the reference above. AbstractThe surface composition and tensions of aqueous aerosols govern a set of processes that largely determine the fate of particles in the atmosphere. Predictive modeling of surface tension can provide significant contributions to studies of atmospheric aerosol effects on climate and and represent three types of solute combinations: organic-organic (glycerol-ethanol), electrolyteorganic (NaCl-succinic acid, NaCl-glutaric acid), and electrolyte-electrolyte (NaCl-KCl and NH4NO3-(NH4)2SO4). For the NaCl-glutaric acid system, experimental measurements of picoliter droplet surface tension using aerosol optical tweezers show excellent agreement with the model predictions.2

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Section: Introductionmentioning

confidence: 99%

Statistical Thermodynamic Model for Surface Tension of Organic and Inorganic Aqueous Mixtures

et al. 2016

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“…Surface tension depression by water soluble dicarboxylic acids in solution was reported by McNeill et al (2013), involving C 3 and C 4 compounds such as malonic, malic, succinic and maleic acids. Enhanced reduction effects on the surface tension were observed with the increasing carbon chain length and concentration.…”

Section: Rose Et Al: Modeling the Partitioning Of Organic Chemicamentioning

confidence: 97%

“…For instance, a notable amount of organic matter (up to 60 % of the total mass) was detected with a compact time-of-flight aerosol mass spectrometer in the CCN measured at the PUY station . Paying more attention to the effect of surfactants on cloud droplet formation follows the global interest that emerged in the literature (McNeill et al, 2013), with a multiplicity of laboratory and field studies as well as global modeling studies (Prisle et al, 2012) dedicated to this research area (Gérard et al, 2016;Nozière et al, 2014).…”

Section: Activation Of Aerosol Particles Into Cloud Dropletsmentioning

confidence: 99%

“…In the last parameterization provided by Abdul-Razzak and Ghan (2004), a modified version of the Köhler theory is used to represent the influence of organic surfactants on aerosol activation. Both recent experimental laboratory and field studies have shown that the presence of such compounds may modify the CCN activity of aerosol particles as a function of the surfactant type and ambient conditions (McNeill et al, 2013).…”

Section: Activation Of Aerosol Particles Into Cloud Dropletsmentioning

confidence: 99%

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Modeling the partitioning of organic chemical species in cloud phases with CLEPS (1.1)

Chaumerliac¹,

Deguillaume²,

Perroux³

et al. 2018

Atmos. Chem. Phys.

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Abstract. The new detailed aqueous-phase mechanism Cloud Explicit Physico-chemical Scheme (CLEPS 1.0), which describes the oxidation of isoprene-derived watersoluble organic compounds, is coupled with a warm microphysical module simulating the activation of aerosol particles into cloud droplets. CLEPS 1.0 was then extended to CLEPS 1.1 to include the chemistry of the newly added dicarboxylic acids dissolved from the particulate phase. The resulting coupled model allows the prediction of the aqueousphase concentrations of chemical compounds originating from particle scavenging, mass transfer from the gas-phase and in-cloud aqueous chemical reactivity. The aim of the present study was more particularly to investigate the effect of particle scavenging on cloud chemistry. Several simulations were performed to assess the influence of various parameters on model predictions and to interpret long-term measurements conducted at the top of Puy de Dôme (PUY, France) in marine air masses. Specific attention was paid to carboxylic acids, whose predicted concentrations are on average in the lower range of the observations, with the exception of formic acid, which is rather overestimated in the model. The different sensitivity runs highlight the fact that formic and acetic acids mainly originate from the gas phase and have highly variable aqueous-phase reactivity depending on the cloud acidity, whereas C 3 -C 4 carboxylic acids mainly originate from the particulate phase and are supersaturated in the cloud.

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“…[304][305][306] In the atmosphere, they can alter the exchange between the gas phase and clouds, fogs and particles, [307][308][309][310][311][312][313] change the kinetics of reactions such as the hydrolysis of NO 2 (ref. 173) and the oxidation of organics, 268,314,315 and alter ion composition and chemistry at the interface.…”

Section: Organicsmentioning

confidence: 99%

Introductory lecture: atmospheric chemistry in the Anthropocene

Finlayson-Pitts

2017

Faraday Discuss.

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The term “Anthropocene” was coined by Professor Paul Crutzen in 2000 to describe an unprecedented era in which anthropogenic activities are impacting planet Earth on a global scale. Greatly increased emissions into the atmosphere, reflecting the advent of the Industrial Revolution, have caused significant changes in both the lower and upper atmosphere. Atmospheric reactions of the anthropogenic emissions and of those with biogenic compounds have significant impacts on human health, visibility, climate and weather. Two activities that have had particularly large impacts on the troposphere are fossil fuel combustion and agriculture, both associated with a burgeoning population. Emissions are also changing due to alterations in land use. This paper describes some of the tropospheric chemistry associated with the Anthropocene, with emphasis on areas having large uncertainties. These include heterogeneous chemistry such as those of oxides of nitrogen and the neonicotinoid pesticides, reactions at liquid interfaces, organic oxidations and particle formation, the role of sulfur compounds in the Anthropocene and biogenic–anthropogenic interactions. A clear and quantitative understanding of the connections between emissions, reactions, deposition and atmospheric composition is central to developing appropriate cost-effective strategies for minimizing the impacts of anthropogenic activities. The evolving nature of emissions in the Anthropocene places atmospheric chemistry at the fulcrum of determining human health and welfare in the future.

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Surface-Active Organics in Atmospheric Aerosols

Cited by 83 publications

References 317 publications

Statistical Thermodynamic Model for Surface Tension of Organic and Inorganic Aqueous Mixtures

Statistical Thermodynamic Model for Surface Tension of Organic and Inorganic Aqueous Mixtures

Modeling the partitioning of organic chemical species in cloud phases with CLEPS (1.1)

Introductory lecture: atmospheric chemistry in the Anthropocene

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