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Removal rates of selected pollutants in the runoff waters from a major rural highway.

Hewitt, CN and Rashed, M. B. (1992) Removal rates of selected pollutants in the runoff waters from a major rural highway. Water Research, 26 (3). pp. 311-319.

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Abstract

The concentrations of cadmium, copper, lead, the organic compounds of lead and eight polycyclic aromatic hydrocarbons have been measured in surface drainage waters from a major rural highway in north-west England during a number of runoff events. The particulate phase (>0.45 μm) contained >90% of the inorganic Pb, 70% of the Cu and 56% of the Cd and the particulate-phase metal concentration profiles largely followed those of the suspended sediments. A “first-flush” effect was seen for the dissolved metals. A highly significant correlation was found between the length of the antecedent dry period and the amount of lead and dissolved copper removed during a runoff event but this was not found for the other pollutants. A simple regression model allows the reliable first-order approximation of lead concentrations and removal rates in the runoff waters to be made from the discharge rate and the length of the antecedent dry period. Budget calculations show that 8% of the Pb, 5% of the organic lead and 3% of the PAHs emitted by vehicles are removed in the highway drainage waters.

Item Type: Article
Journal or Publication Title: Water Research
Uncontrolled Keywords: pollution ; motor vehicles ; runoff waters ; drainage waters ; highway ; lead ; cadmium ; copper ; polycyclic aromatic hydrocarbons
Subjects: G Geography. Anthropology. Recreation > GE Environmental Sciences
Departments: Faculty of Science and Technology > Lancaster Environment Centre
ID Code: 22774
Deposited By: ep_ss_importer
Deposited On: 13 Jan 2009 09:59
Refereed?: No
Published?: Published
Last Modified: 26 Jul 2012 16:06
Identification Number:
URI: http://eprints.lancs.ac.uk/id/eprint/22774

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