Acidity, defined as pH, is a central component of aqueous chemistry. In the atmosphere, the
acidity of condensed phases (aerosol particles, cloud water, and fog droplets) governs the …

pH is an important property of aerosol particles but is difficult to measure directly. Several
studies have estimated the pH values for fine particles in northern China winter haze using …

In some regions, reducing aerosol ammonium nitrate (NH 4 NO 3) concentrations may
substantially improve air quality. This can be accomplished by reductions in precursor …

Acid-driven multiphase chemistry of isoprene epoxydiols (IEPOX), key isoprene oxidation
products, with inorganic sulfate aerosol yields substantial amounts of secondary organic …

Isoprene-derived secondary organic aerosol (SOA) is mainly formed through acid-catalyzed
reactive uptake of isoprene-derived epoxydiols (IEPOX) onto sulfate aerosol particles. The …

pH is one of the most basic chemical properties of aqueous solution, but its measurement in
nanoscale aerosol particles presents many challenges. The pH of aerosol particles is of …

Atmospheric aerosols are a significant public health hazard and have substantial impacts on
the climate. Secondary organic aerosols (SOAs) have been shown to phase separate into a …

A useful aerosol model must be able to adequately resolve the chemical complexity and
phase state of the wide particle size range arising from the many different secondary aerosol …

The spatiotemporal variations of fine particulate matter (PM 2.5) chemical composition have
changed over time in the US and increasing evidence indicated differential toxicity of PM 2.5 …

Humic-like substances (HULIS) are macromolecular complex groups in water-soluble
organic compounds (WSOC). pH is a crucial factor that influences the chemical …