( 2010 ) used historical moss collections to investigate atmospheric deposition of polycyclic aromatic hydrocarbons (PAHs), highlighting an increasing trend in light PAHs.
← all excerpts
Reconstructing Air Pollution Trends in Remote Forests of Central Europe Using Lichen Herbarium Specimens.
2
—
—
The sentences
A clear trend of decreasing Pb concentrations was observed, after peaks around 1989 (collections from 1995 to 1997 and later) likely reflecting the introduction of unleaded gasoline.