Modeling of GUV222-driven increases in SOA concentrations in an unoccupied office

This data set contains the data for the paper "Modeling of GUV222-driven increases in SOA concentrations in an unoccupied office". An abstract for the paper is as follows: The COVID-19 pandemic led to high interest in germicidal ultraviolet (GUV) lamps, which can deactivate bacteria and viruses in infectious aerosols. Recently, lamps using 222 nm (GUV222) light to disinfect occupied spaces have become more popular and available, as the wavelength is safer for human exposure than 254 nm lamps. However, GUV222 produces ozone, which drives the formation of other pollutants. Previous work in a controlled environmental Teflon chamber with GUV222 has shown significant production of ozone followed by the formation of secondary organic aerosol (SOA) from limonene ozonolysis and developed a model of this process. This work adapts that model for use in an unoccupied office and shows it is able to accurately predict SOA formation and yield given a continuous source of limonene. SOA yields from limonene in the office were found to be similar to those measured in a Teflon chamber. However, SOA formation resulting from briefly emitted limonene was harder to capture in the model. Number concentrations of ultrafine particles increased under GUV222 after limonene injection while overall SOA mass concentrations had negligible change. GUV222 also had other impacts on room chemistry; concentrations of most VOCs measured increased under GUV222, driven by gas and surface phase ozone reactions, as well as potentially direct surface emissions.