Bild11 [Field Campaigns]

Small subset of ion signal time series recorded by the MOVI-HR-ToF-CIMS including gas and particle components detected using the acetate reagent ion . Two ions (m/Q 138 and 170) detected analyzing the particle phase showed significant variations over the campaign that were fairly well correlated with AMS total organic aerosol mass. These ions also correlated well with that at m/Q 42 detected almost entirely in the gas-phase corresponding to isocyanic acid (HNCO), a biofuel combustion tracer. The ability to simultaneously monitor gas and particle phase composition with one instrument enhances the ability for robust source identification.