Abstract
Chemical reactions between a reactive gas and single solid and liquid aerosol particles have been studied using an electrodynamic balance coupled to a Raman spectrometer. Electrodynamic levitation was used to suspend a single charged microparticle in a polarized laser beam, which was used as the light source for spontaneous Raman emission. The highly exothermic reaction between bromine vapor and an olefin microdroplet, 1-octadecene, and the reaction between a sorbent particle, calcium oxide, and a humid air stream containing sulfur dioxide have been explored by following the formation of a Raman-active chemical bond.
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