Photochemistry of single particles using acoustic levitation coupled with Raman microspectrometry

Yeny A. Tobon (1) , Samantha Seng (1) , Lorena A. Picone (2) , Yanina B. Bava (2) , Luciana C. Juncal (1, 2) , Myriam Moreau (1) , Rosana M. Romano (2) , Jacques Barbillat (1) , Sophie Sobanska (3, 1)

1 LASIRE - Laboratoire Avancé de Spectroscopie pour les Intéractions la Réactivité et l'Environnement - UMR 8516
2 CEQUINOR - Centro de Química Inorgánica "Prof. Dr. Pedro J. Aymonino" [La Plata]
3 ISM - Institut des Sciences Moléculaires

The photoreactivity of single particles with atmospheric interest was studied by using an acoustic levitation system coupled to Raman microspectrometry. Both, inorganic and organic single particle phototransformation has been investigated without any surface contact. The Raman microspectrometry has suitably provided the identification, the chemical heterogeneity as well as the formation rates of products. Complex surface limited processes are demonstrated for photolysis of both nitrate-rich and sulfur-rich droplets.

Mots clés: acoustic levitation; chemical heterogeneity; photochemistry; Raman microspectrometry; single particles

Domaines: Chimie théorique et/ou physique

Yeny A. Tobon, Samantha Seng, Lorena A. Picone, Yanina B. Bava, Luciana C. Juncal, et al.. Photochemistry of single particles using acoustic levitation coupled with Raman microspectrometry. Journal of Raman Spectroscopy, 2017, 48 (8), pp.1135 - 1137. ⟨10.1002/jrs.5181⟩. ⟨hal-01579528⟩