CEQUINOR   05415
CENTRO DE QUIMICA INORGANICA "DR. PEDRO J. AYMONINO"
Unidad Ejecutora - UE
artículos
Título:
Photodegradation of methyl thioglycolate particles as a proxy for organosulphur containing droplets
Autor/es:
BAVA, YANINA B; CIURARU, RALUCA; SOBANSKA, SOPHIE; SENG, SAMANTHA; JUNCAL, LUCIANA C; GEORGE, CHRISTIAN; TOBON, YENY ALEXANDRA; PICONE, ANDREA LORENA; MOREAU, MYRIAM; ROMANO, ROSANA MARIEL
Revista:
PHYSICAL CHEMISTRY CHEMICAL PHYSICS
Editorial:
ROYAL SOC CHEMISTRY
Referencias:
Año: 2018 vol. 20 p. 19416 - 19423
ISSN:
1463-9076
Resumen:
Understanding the formation and transformation of sulphur-rich particles is of prime importance since they contribute to the global atmospheric sulphur budget. In this work, we performed a series of experiments on a photoactive organosulphur compound namely, methyl thioglycolate, as a model of an organosulphur species of marine origin. By investigating the photoproducts within levitated droplets, we showed that elemental sulphur (α-S8) and sulphate (SO4 2-) can be photochemically generated at the gas-liquid interface by heterogeneous interaction with gaseous O2 and H2O. These results demonstrate that the surface of levitated droplets facilitate the oxidation of methyl thioglycolate in the dark, while illumination is necessary to produce the oxidation in bulk experiments.