Collisions and Reactions of HNO$_{3}$ and N$_{2}$O$_{5}$ with Sea Spray Mimics

Heterogeneous reactions occurring at the surface of sea spray aerosol (SSA) droplets can lead to changes in the chemical compositions of the droplet, the denitrification of the atmosphere, and the production of chlorine-containing gases. These processes ultimately influence both ozone and methane concentrations and air quality. We explore these reactions through gas-liquid scattering experiments in vacuum using salty and surfactant-coated glycerol (a low vapor pressure liquid) as a proxy for SSA. HNO$_{3}$ and N$_{2}$O$_{5}$ are atmospherically-relevant species that can dissociate and react at or near the surface of a protic liquid. In particular, N$_{2}$O$_{5}$ may react with the solvent to generate HNO$_{3}$ and glycerol nitrate and may react with near-interfacial Cl$^{-}$ to generate ClNO$_{2}$, Cl$_{2}$, and HONO. Our initial experiments will focus on reactions of DNO$_{3}$ to monitor the competition between HCl and HNO$_{3}$ formation and desorption.