Atmospheric oxidation of sulfur dioxide (SO2) forms sulfate-containing aerosol particles that
impact air quality, climate, and human and ecosystem health. It is well-known that in-cloud …

Multiphase and heterogeneous photochemistry is an emerging component of atmospheric
and air pollution research. It is primarily driven by reactions of photochemically produced …

Particulate nitrate (pNO 3−) has long been considered a permanent sink for NO x (NO and
NO2), removing a gaseous pollutant that is central to air quality and that influences the …

Satellite-based retrievals of tropospheric NO 2 columns are widely used to infer NO x (≡
NO+ NO 2) emissions. These retrievals rely on model information for the vertical distribution …

Particulate sulfate is one of the most important components in the atmosphere. The
observation of rapid sulfate aerosol production during haze events provoked scientific …

How tiny aqueous aerosol droplets significantly accelerate the atmospheric multiphase
reaction remains an open question. Here, we show both experimental and theoretical …

Elevated particulate sulfate concentrations have been frequently observed in coastal areas
when air masses are influenced by continental emissions, especially combustion sources …

Ambient nitrate has been of increasing concern in PM 2.5, while there are still large
uncertainties in quantifying the formation of nitrate aerosol. The formation pathways of nitrate …

Glyoxal is an important precursor of aqueous secondary organic aerosol (aqSOA). Its
photooxidation to form organic acids and oligomers and reactions with reduced nitrogen …

Vanillin (VL), a phenolic aromatic carbonyl abundant in biomass burning emissions, forms
triplet excited states (3 VL∗) under simulated sunlight leading to aqueous secondary …