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THE DEPOSITION OF SELECTED POLLUTANTS ADJACENT TO A MAJOR RURAL HIGHWAY

Research output: Contribution to journalJournal article

Published
<mark>Journal publication date</mark>1991
<mark>Journal</mark>Atmospheric Environment: Part A - General Topics
Issue number5-6
Volume25
Number of pages5
Pages (from-to)979-983
<mark>State</mark>Published
<mark>Original language</mark>English

Abstract

Deposition fluxes of Pb, Cd and Cu, the organic compounds of lead and eight polycyclic aromatic hydrocarbon (PAH) compounds have been measured over a period of 1 year at distances up to 50 m from a major rural highway in northwest England. A rapid decline in deposition fluxes with distance from the road edge was observed, with background fluxes seen at 50 m. Dry deposition velocities in the range 0.1-1.0 cm s-1 and washout ratios in the range 24-129 were seen for the three metals. It is estimated that 13.7% of the Pb, 11.8% of the organic lead and 4.6% of the total PAH emitted by vehicles on the highway are deposited on the central reservation or within 50 m of the carriageway.