The vapor pressures of ten polycyclic aromatic hydrocarbons, ranging in molecular weight from (152 to 252) g ·mol, were measured using the Knudsen effusion technique in the temperature range of (297 to 432) K. These compounds included those for which there were few or conflicting data in the literature: acenaphthylene, acenaphthene, fluoranthene, benzo[a]phenanthrene, 9,10-benzophenanthrene, be...

BACKGROUND Children from low-income families may be subject to high exposures to polycyclic aromatic hydrocarbons (PAH) which can lead to respiratory disorders. This study aims to establish methods for assessing total PAH exposure of asthmatic and non-asthmatic children from low-income families; to estimate serum PAH concentrations of these children, and to estimate the relative importance of t...

After the explosion of the Deepwater Horizon oil rig, large volumes of crude oil were washed onto and embedded in the sandy beaches and sublittoral sands of the Northern Gulf of Mexico. Some of this oil was mechanically or chemically dispersed before reaching the shore. With a set of laboratory-column experiments we show that the addition of chemical dispersants (Corexit 9500A) increases the mo...