Is singlet oxygen efficient in oxidising organic films at silica/water interfaces for atmospheric mineral aerosol?

Organic molecules in haze, cloud and fog droplets may be oxidised by aqueous oxidants. Recent reports have demonstrated that singlet oxygen may exist in large enough mixing ratios in atmospheric particulate matter to be atmospherically relevant, but the rate of reaction is unknown and needed for to assess whether atmospherically important. A reaction with an atmospheric lifetime longer than 4 days is not important. A previous proof-of-concept solid-liquid neutron experiment by one of the proposers demonstrates that singlet oxygen oxidation of bilayer lipid films is possible and combined with an ISIS facility development student’s new solid-liquid cell that can measure the phosphorescence of singlet oxygen promises an elegant experiment.