Soluble transition metals in particulate matter (PM) can generate reactive oxygen species in
vivo by redox cycling, leading to oxidative stress and adverse health effects. Most metals …

Epidemiological studies of particulate matter (PM) using central area monitors have
associated total PM mass, as well as certain individual components of PM, including sulfate …

The oxidation of S (IV) is a critical step in the fate of sulfur dioxide emissions that determines
the amount of sulfate aerosol in the atmosphere. Herein, we measured accelerated S (IV) …

Water-soluble redox-active metals are potentially toxic due to its ability to catalytically
generate reactive oxygen species (ROS) in vivo, leading to oxidative stress. As part of the …

Fine-particle pollution associated with high sulfate and secondary organic aerosol (SOA)
contents still occurs in winter, despite considerable reductions in precursor emissions in …

High levels of ammonia (NH3) have been suggested to elevate ambient particle pH levels to
near neutral acidity (pH= 7), a condition that promotes rapid SO2 oxidation by NO2 to form …

The importance of dust heterogeneous oxidation in the removal of atmospheric SO 2 and
formation of sulfate aerosols is not adequately understood. In this study, the Fe-, Ti-, and Al …

Ambient particulate matter (PM) is a complex mixture of inorganic and organic compounds.
The US Environmental Protection Agency (EPA) regulates PM as a criteria pollutant and …

Traffic is a significant pollution source in cities and has caused various health and
environmental concerns worldwide. Therefore, an improved understanding of traffic impacts …

Atmospheric sulfate aerosols have important impacts on air quality, climate, and human and
ecosystem health. However, current air-quality models generally underestimate the rate of …