Direct measurement of N2O5 heterogeneous uptake coefficients on ambient aerosols via an aerosol flow tube system: design, characterization and performance
Abstract:Abstract. An aerosol flow tube system coupled with detailed box model was newly developed to measure N2O5 heterogeneous uptake coefficients (γ(N2O5)) on ambient aerosols directly. This system features simultaneous measurements of N2O5 concentration at the both entrance and exit of the flow tube to ensure an accurate derivation of N2O5 loss in the flow tube. Simulation and laboratory tests demonstrate that this flow tube system is able to overcome the interference from side reactions led by varying reactants (e… Show more
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