Susanne V. Hering

TL;DR: In this paper, the authors measured gas and particle-phase pollutant concentrations in the Caldecott Tunnel in the San Francisco Bay Area during the summer of 1996 and found that heavy-duty diesel trucks were the major source of lighter particles, whereas light-duty gasoline vehicles were the dominant source of higher molecular weight particles such as benzo[a]pyrene and dibenz[a,h]anthracene.

TL;DR: In this article, the authors quantified polycyclic aromatic hydrocarbon (PAH) emissions in gasoline and diesel fuel samples collected in summer 1997 in northern California and found that Naphthalene was the predominant PAH in both fuels.

TL;DR: It is shown that isoprene-derived SOA is directly mediated by the abundance of sulfate, instead of the particle water content and/or particle acidity as suggested by prior laboratory studies, which implies that future reduction in SO2 and NOx emissions can considerably reduce the SOA burden in the southeastern US.

TL;DR: In this paper, the authors found that significant adsorption of gas-phase organic compounds occurs on quartz fiber filters, and the presence of typical loadings of particulate material on the sampling filter does not significantly affect the magnitude of the adsorization artifact.

TL;DR: In this article, the authors report that heavy-duty diesel vehicles in California are responsible for nearly half of oxides of nitrogen emissions and greater than three-quarters of exhaust fine particle emissions from on-road motor vehicles.