Theoretical study of the adsorption of Methyl Iodide on model sea-salt surfaces

Toubin, Céline; Infuso, Maxime; Louis, Florent; Taamali, Sonia; Duflot, Denis

Type de document :

Autre communication scientifique (congrès sans actes - poster - séminaire...)

DOI :

10.5194/egusphere-egu23-4481

Titre :

Theoretical study of the adsorption of Methyl Iodide on model sea-salt surfaces

Auteur(s) :

Toubin, Céline []
Laboratoire de Physique des Lasers, Atomes et Molécules - UMR 8523 [PhLAM]
Infuso, Maxime [Auteur]
Laboratoire de Physique des Lasers, Atomes et Molécules - UMR 8523 [PhLAM]
Louis, Florent [Auteur]

Physicochimie des Processus de Combustion et de l’Atmosphère - UMR 8522 [PC2A]
Taamali, Sonia [Auteur]
Physicochimie des Processus de Combustion et de l’Atmosphère - UMR 8522 [PC2A]
Duflot, Denis [Auteur]
Laboratoire de Physique des Lasers, Atomes et Molécules - UMR 8523 [PhLAM]

Titre de la manifestation scientifique :

EGU General Assembly

Ville :

Vienne (AUT)

Pays :

Autriche

Date de début de la manifestation scientifique :

2023-04-23

Date de publication :

2023-05-15

Discipline(s) HAL :

Chimie/Chimie théorique et/ou physique
Physique [physics]

Résumé en anglais : [en]

Oceans, through algae and phytoplankton activities, are the main source of iodine, including monohalogenated organic compounds as CH3I [1].  There is missing knowledge about interactions between iodinated compounds ...
Lire la suite >Oceans, through algae and phytoplankton activities, are the main source of iodine, including monohalogenated organic compounds as CH3I [1].  There is missing knowledge about interactions between iodinated compounds and aerosols in the troposphere. In this context, this work investigates the adsorption of gaseous iodomethane (CH3I) on model sea-salt aerosols at various humidities. The water coverage tends to stabilize CH3I at the salt surface. The lifetime of CH3I in the atmosphere (in gas phase or adsorbed on aerosols) may be altered by its reaction with gas phase radicals. The reaction of CH3I with OH is thus investigated both in gas phase and in presence of water by means of quantum mechanical calculations. References:[1] Saiz-Lopez et al, Chem. Rev. 2012, 112, 1773–1804. Acknowledgments: I-SITE ULNE OVERSEE project (contract ANR-16-IDEX-004)The CaPPA project (Chemical and Physical Properties of the Atmosphere) is funded by the French National Research Agency (ANR) through the PIA (Programme d’Investissement d’Avenir) under contract « ANR-11-LABX-0005-01 » and by the Regional Council « Hauts-de-France » and the « European Funds for Regional Economic Development » (FEDER)Lire moins >

Langue :

Anglais

Comité de lecture :

Oui

Audience :

Internationale

Vulgarisation :

Non

Collections :

Laboratoire de Physique des Lasers, Atomes et Molécules (PhLAM) - UMR 8523

Source :

Harvested from HAL

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