Coadsorption at the air/water interface as source of pollutant transfer to the atmosphere: The case study of benzene/cyclohexane traces and lead

Sadiki, Mustapha; Quentel, François; Elléouet, Catherine; Stephan, Ludovic; Olier, R.; Privat, Mireille

doi:10.1016/j.atmosenv.2005.01.019

Cited by 10 publications

(11 citation statements)

References 31 publications

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“…We recently contributed to elucidate how adsorption film containing two sorts of non-volatile pollutants, as hydrocarbons or carbofuran and lead salt [1,2], can lead to a dissemination of both of them in the atmosphere. This is particularly intriguing because, instead of adsorbing at the water surface whenever there is no co-adsorbate, the ionic salt is even depleted [3][4][5].…”

Section: Introductionmentioning

confidence: 99%

Coadsorption of carbofuran and lead at the water/silica interface. Possible impact on environment

Elmanfe

Benbouzid

Derkaoui

et al. 2006

Comptes Rendus. Chimie

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Section: Introductionmentioning

confidence: 99%

Coadsorption of carbofuran and lead at the water/silica interface. Possible impact on environment

Elmanfe

Benbouzid

Derkaoui

et al. 2006

Comptes Rendus. Chimie

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“…Under our experimental conditions, all the verifications we made demonstrated the lack of complexation for Pb ++ ions [5][6]. Table 1 lists the interfacial tensions measured by tensiometry at 25 and 30°C in saturated diphasic mixtures of waterbenzene as well as in water-cyclohexane; α means vapour, β denotes aqueous phase, γ refers to oily phase and is the angle defined above.…”

Section: Chemicalsmentioning

confidence: 99%

“…At steady state and with respect to the species concentration at the column bottom, C b , the concentration profile C(z) along the column is: (6) with where A is the column cross-section, a is the surface area per bubble, f is the bubble generation rate (calculated from the measured gas flow and the bubble volume mean value), and D is the eddy dispersion coefficient; moreover, the gas within each bubble is supposed to be at atmospheric pressure. The parameter J characterises the separation of the solute from the solvent induced by the adsorption upon the ascending bubbles.…”

Section: Bubble Column Theorymentioning

confidence: 99%

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Adsorption and Wetting Mechanisms at the Surface of Aqueous Hydrocarbon Solutions as a Possible Source of Atmospheric Pollution

Sadiki¹,

Quentel²,

Elléouet³

et al. 2006

Oil & Gas Science and Technology - Rev. IFP

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Résumé -Mécanismes d'adsorption et de mouillage à la surface de solutions aqueuses d'hydrocarbures comme source possible de pollution atmosphérique -Les solutions d'hydrocarbures ne sont pas très souvent étudiées. Cependant, leur comportement est impliqué dans de nombreux mécanismes, en particulier les mécanismes environnementaux. Dans le présent article, nous présentons la synthèse de plusieurs travaux ayant trait au comportement superficiel, en particulier d'adsorption, de solutions non saturées de benzène et de cyclohexane. Il y est mis en évidence la coadsorption de nitrate de plomb, bien que celui-ci, en l'absence de molécules organiques dans la surface, ne s'adsorbe pas du tout. Ces données ont été obtenues essentiellement au moyen d'une technique rarement utilisée, la colonne à bulles, brièvement décrite ci-dessous. Celle-ci, en dépit des contraintes de sa mise en oeuvre, s'est révélée très utile dans l'étude de ces composés faiblement adsorbables, et peu actifs sur la tension de surface. L'étude des mélanges se fait directement, sans avoir à utiliser de modèle, ce qui est précieux pour des études environnementales. Les résultats obtenus établissent de façon convaincante que des mécanismes, tels que le pétillement, joints à la coadsorption, peuvent entraîner le passage de composés nocifs pour l'environnement, peu solubles, peu actifs sur la surface quand ils sont isolés, depuis l'eau jusque dans l'atmosphère. Abstract -Adsorption and Wetting Mechanisms at the Surface of Aqueous Hydrocarbon Solutions as a Possible Source of Atmospheric Pollution

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“…For example, there is growing interest in the use of such materials in electronics [1][2][3], as well as in catalysis and other applications [4,5]. Moreover, thin films sequester atmospheric trace gases leading to their removal from the gas phase [6,7], and they may also act as reactive media or as a source of reagents [8,9]. Studies in this area have included reactions of interest in atmospheric science such as endogenous atmospheric reactions of species like N 2 O 5 at organic-coated particles [10], the reactive uptake of OH and O 3 by organic aerosols and films [11][12][13] and the little understood oligomerization reactions that lead to atmospheric organic polymers [14].…”

Section: Introductionmentioning

confidence: 99%

Reactions of Organic Ions at Ambient Surfaces in a Solvent-Free Environment

Badu‐Tawiah

Cyriac

Cooks

2012

J. Am. Soc. Mass Spectrom.

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Solvent-free ion/surface chemistry is studied at atmospheric pressure, specifically pyrylium cations, are reacted at ambient surfaces with organic amines to generate pyridinium ions. The dry reagent ions were generated by electrospraying a solution of the organic salt and passing the resulting electrosprayed droplets pneumatically through a heated metal drying tube. The dry ions were then passed through an electric field in air to separate the cations from anions and direct the cations onto a gold substrate coated with an amine. This nontraditional way of manipulating polyatomic ions has provided new chemical insights, for example, the surface reaction involving dry isolated 2,4,6-triphenylpyrylium cations and condensed solid-phase ethanolamine was found to produce the expected N-substituted pyridinium product ion via a pseudobase intermediate in a regiospecific fashion. In solution however, ethanolamine was observed to react through its N-centered and O-centered nucleophilic groups to generate two isomeric products via 2H-pyran intermediates. The O-centered nucleophile reacted less rapidly to give the minor product. The surface reaction product was characterized in situ by surface enhanced Raman spectroscopy, and ex situ using mass spectrometry and H/D exchange, and found to be chemically the same as the major pyridinium solution-phase reaction product.

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Coadsorption at the air/water interface as source of pollutant transfer to the atmosphere: The case study of benzene/cyclohexane traces and lead

Cited by 10 publications

References 31 publications

Coadsorption of carbofuran and lead at the water/silica interface. Possible impact on environment

Coadsorption of carbofuran and lead at the water/silica interface. Possible impact on environment

Adsorption and Wetting Mechanisms at the Surface of Aqueous Hydrocarbon Solutions as a Possible Source of Atmospheric Pollution

Reactions of Organic Ions at Ambient Surfaces in a Solvent-Free Environment

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