Mei Zheng

TL;DR: In this paper, the 24-hour PM2.5 samples were taken at 6-day intervals at five urban and rural sites simultaneously in Beijing, China for 1 month in each quarter of calendar year 2000.

TL;DR: In this paper, the formation of secondary organic aerosol (SOA) in an anthropogenic-influenced region in the southeastern United States is investigated by a comparison with urban plumes in the northeast.

TL;DR: High percentages of unexplained fine organic carbon concentrations are observed in July, which is likely due to an increase in secondary organic aerosol formation during the summer season, andinct seasonality is observed in source contributions, including higher contributions from wood combustion during the colder months of October and January.

TL;DR: In this paper, light absorption of fine particle (PM2.5) aqueous extracts between wavelengths of 200 and 800 nm were investigated from two data sets: 24-h Federal Reference Method (FRM) filter extracts from 15 Southeastern US monitoring sites over the year of 2007 (900 filters), and online measurements from a Particle-Into-Liquid Sampler deployed from July to mid-August 2009 in Atlanta, Georgia.

TL;DR: Li et al. as discussed by the authors investigated the relationship between levoglucosan and other biomass burning tracers (i.e., water soluble potassium and mannosan) based on both ambient samples collected in Beijing and source samples.