Sentences with phrase «shielded pahs»

We need to better understand how shielded PAHs might vary depending on the complexity of the aerosol composition, atmospheric chemical aging of particles, temperature, and relative humidity,» said Shrivastava.

These predictions from models that considered shielded PAHs were far more accurate than previous predictions which included unshielded pollutants.

In all cases, the shielded PAHs traveled across oceans and continents, whereas in the previous version they barely moved from their country of origin.

Not exact matches

Shielded by the coating, these PAHs can survive long distances, taking their harmful health effects to locations far from their origin.

To find out if including the shielding of PAHs by viscous aerosols would improve global atmosphere models, the scientists used laboratory experiments to develop a new way of representing PAHs in a global model.

The team found the predictions with the new shielded model of PAHs came in at the same value that Simonich measured on the mountain - four times higher than the previous model, which was considerably off the mark.

PNNL scientists found that secondary organic aerosols formed in the presence of the toxic pollutant known as polycyclic aromatic hydrocarbons (PAHs) trapped the PAH molecules inside, shielding them from degradation.