Coal-tar pavement sealant use and polycyclic aromatic hydrocarbon contamination in urban stream sediments

Changing fluvial systems

Auteur(s) et Affiliation(s)

PAVLOWSKY, R.T.

Dep. of Geography, Geology, and Planning, Missouri State Univ., Springfield, Etats-Unis

MOSSA, J.

Dept. of Geography, Univ. of Florida, Gainesville, Etats-Unis

JAMES, L.A.

Dept. of Geography, Univ. of South Carolina, Columbia, Etats-Unis

Description :
This study evaluates the spatial distribution of polycyclic aromatic hydrocarbons (PAHs) in urban stream and pond sediments in Galloway Creek in Springfield, Missouri by focusing specifically on parking lots with and without coal-tar sealants as contamination source areas. Multiple-linear regression analysis is used to evaluate the spatial connectivity of contaminated sediment to potential source areas and compare the relative influence of watershed source factors and reach sediment variability on sediment PAH levels. Sediments from coal-tar sealed parking lots and the streams that drain them are enriched in PAHs at concentrations considered toxic to aquatic life. Metal and nutrient contaminants are poorly correlated with sealed lot area indicating a wider range of urban source inputs. Finally, parking lots with coal-tar coatings contribute >80% of the total PAH concentration in urban stream and pond sediments in Galloway Creek.

Type de document :
Article de monographie

Source :
Physical geography, issn : 0272-3646, 2013, vol. 34, n°. 4-5, p. 392-415, nombre de pages : 24, Références bibliographiques : 3 p.

Date :
2013

Editeur :
Pays édition : Royaume-Uni, Abingdon, Taylor and Francis

Langue :
Anglais