… the chemical composition of fine particulate matter in Ulaanbaatar during severe winter
haze events, and to determine the sources and origins of those particles. This analysis can …

… Therefore, it was speculated that the increase in SO 4 2− production under high NO 2 and
SO 2 concentrations, high RH, and low O 3 levels in Northeast China haze events may occur …

… the enhanced particulate sulfur seen during these haze events (… that enhanced particulate
sulfur in some winter haze events may … During severe winter haze events in the NCP, PM 2.5 …

… Few epidemiologic studies have characterized the particulate matter (PM) components …
severe haze event occurred over 25 days in urban Beijing, China. Ambient fine particulate matter …

… Persistent heavy pollution episodes occurred frequently in winter because of the … other
three haze events. This difference indicates that primary coarse particles from particulate matter …

… The meteorological and chemical characteristics during heavy haze events in Beijing
were … approach to quantify the contributions from different regions to fine particulate matter. …

… winter haze in Beijing, although the rapid growth of sulfate still played an important role in
the formation and evolution of extremely heavy haze events. … To prevent Beijing winter haze …

… also significantly deteriorates particulate matter (PM) pollution during heavy haze events. …
pollution is quantitatively assessed during a persistent heavy haze episode from a modeling …

… Recently, more and more attention has been paid to PM 2.5 (particulate matters with
aerodynamic diameters ≤ 2.5 μm) in China because of their significant adverse impact on air …

… During the extreme haze events in urban Beijing in early 2013, the peak mass … the highest
RH/N in winter, which indirectly showed that severe haze events primarily occurred in winter. …