Organic Composition, Chemistry, and Photochemistry of Urban Film in Leipzig, Germany

In polluted urban environments, windows and building surfaces are coated with a complex film of chemicals. Despite its high surface-to-volume ratio and direct exposure to sunlight, few studies have directly investigated the role that this “urban film” may play in promoting the chemistry and photochemistry of semivolatile organic species contained within it. Here, we report results from a field investigation of the organic composition of urban …