L. King

TL;DR: It is suggested that the hydrophobic components of both water-soluble and insoluble organic aerosols substantially contribute to the oxidative properties of ambient PM.

TL;DR: In this paper, size-resolved direct measurements of brown carbon were made at both urban (Atlanta), and rural (Yorkville) sites in Georgia, and brown carbon absorption was estimated based on Mie calculations using direct size-resolution measurements of chromophores in solvents.

TL;DR: In this paper, the potential of the water-soluble fraction of atmospheric fine aerosols in the southeastern United States to generate reactive oxygen species (ROS) and identify major ROS-associated emission sources was quantified by the dithiothreitol (DTT) assay and involved analysis of fine particulate matter (PM) extracted from high-volume quartz filters (23 h integrated samples) collected at various sites in different environmental settings in the southeast, including three urban-Atlanta sites, in addition to a rural site.

TL;DR: In this paper, an extensive set of emission factors (EFs) for over 80 gases and 5 components of submicron particulate matter (PM_1) from three wildfires in the western U.S. were measured from aircraft during the Studies of Emissions and Atmospheric Composition, Clouds and Climate Coupling by Regional Surveys (SEAC^4RS) and the Biomass Burning Observation Project (BBOP).

TL;DR: In this article, a semi-automated system for quantifying the oxidative potential of aerosol liquid extracts using the DTT assay was developed, capable of unattended analysis at one sample per hour, and reasonably low limit of detection (0.31 nmol min−1).