TY - JOUR
T1 - Coal-tar-based sealcoated pavement
T2 - A major PAH source to urban stream sediments
AU - Witter, Amy E.
AU - Nguyen, Minh H.
AU - Baidar, Sunil
AU - Sak, Peter B.
N1 - Funding Information:
We thank Scott Mabury, Emma Goosey, and Miriam Diamond at the University of Toronto for facilitating the sediment extraction, and Jim Ciarocca and Kristin Brubaker for help with the GIS analyses. We also thank the anonymous reviewers whose comments greatly strengthened the original manuscript. Dickinson College Research and Development Grants supported this work and were awarded to AEW, SB and MN. The GC–MS used in this work was supported through funding awarded to Dickinson College by the Sherman-Fairchild Foundation .
PY - 2014
Y1 - 2014
N2 - We used land-use analysis, PAH concentrations and assemblages, and multivariate statistics to identify sediment PAH sources in a small (∼1303 km2) urbanizing watershed located in South-Central, Pennsylvania, USA. A geographic information system (GIS) was employed to quantify land-use features that may serve as PAH sources. Urban PAH concentrations were three times higher than rural levels, and were significantly and highly correlated with combined residential/commercial/industrial land use. Principal components analysis (PCA) was used to group sediments with similar PAH assemblages, and correlation analysis compared PAH sediment assemblages to common PAH sources. The strongest correlations were observed between rural sediments (n = 7) and coke-oven emissions sources (r = 0.69-0.78, n = 5), and between urban sediments (n = 22) and coal-tar-based sealcoat dust (r = 0.94, n = 47) suggesting that coal-tar-based sealcoat is an important urban PAH source in this watershed linked to residential and commercial/industrial land use.
AB - We used land-use analysis, PAH concentrations and assemblages, and multivariate statistics to identify sediment PAH sources in a small (∼1303 km2) urbanizing watershed located in South-Central, Pennsylvania, USA. A geographic information system (GIS) was employed to quantify land-use features that may serve as PAH sources. Urban PAH concentrations were three times higher than rural levels, and were significantly and highly correlated with combined residential/commercial/industrial land use. Principal components analysis (PCA) was used to group sediments with similar PAH assemblages, and correlation analysis compared PAH sediment assemblages to common PAH sources. The strongest correlations were observed between rural sediments (n = 7) and coke-oven emissions sources (r = 0.69-0.78, n = 5), and between urban sediments (n = 22) and coal-tar-based sealcoat dust (r = 0.94, n = 47) suggesting that coal-tar-based sealcoat is an important urban PAH source in this watershed linked to residential and commercial/industrial land use.
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U2 - 10.1016/j.envpol.2013.10.015
DO - 10.1016/j.envpol.2013.10.015
M3 - Article
C2 - 24215941
AN - SCOPUS:84887675081
SN - 0269-7491
VL - 185
SP - 59
EP - 68
JO - Environmental Pollution
JF - Environmental Pollution
ER -
