Please use this identifier to cite or link to this item: https://doi.org/10.1016/j.jenvman.2011.11.017
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dc.titleAccumulation of potentially toxic elements in road deposited sediments in residential and light industrial neighborhoods of Singapore
dc.contributor.authorYuen, J.Q.
dc.contributor.authorOlin, P.H.
dc.contributor.authorLim, H.S.
dc.contributor.authorBenner, S.G.
dc.contributor.authorSutherland, R.A.
dc.contributor.authorZiegler, A.D.
dc.date.accessioned2014-04-02T08:17:48Z
dc.date.available2014-04-02T08:17:48Z
dc.date.issued2012-06-30
dc.identifier.citationYuen, J.Q., Olin, P.H., Lim, H.S., Benner, S.G., Sutherland, R.A., Ziegler, A.D. (2012-06-30). Accumulation of potentially toxic elements in road deposited sediments in residential and light industrial neighborhoods of Singapore. Journal of Environmental Management 101 : 151-163. ScholarBank@NUS Repository. https://doi.org/10.1016/j.jenvman.2011.11.017
dc.identifier.issn03014797
dc.identifier.urihttp://scholarbank.nus.edu.sg/handle/10635/49696
dc.description.abstractRoad deposited sediments (RDS) are a valuable environmental medium for characterizing contaminant levels in urban areas; and their associated potentially toxic elements (PTEs) can directly impact both human and aquatic health. In this study, RDS were collected from 15 co-located industrial and residential roads throughout Singapore to determine the effect of land use on contaminant levels. A second pilot study was designed to quantify the efficiency of road sweeping in removing different RDS grain size fractions from industrial and residential roads. The fine fraction (<63 μm) of all RDSs was analyzed for over 40 elements. Eleven elements that reflect geogenic and anthropogenic sources were examined in detail (Al, Co, Cr, Cu, Fe, Ni, Pb, Sb, Sc, Si, and Zn). Industrial RDS had statistically higher concentrations of Co, Cr, Fe, and Ni than residential RDS. Potentially toxic elements Cu, Pb, Sb, and Zn were enriched >10-fold at all locations compared to upper continental crust values. Concentrations of Cu, Pb and Zn exceeded aquatic sediment probable effect concentration levels, suggesting they could generate a toxic response in bottom-dwelling aquatic organisms. Traffic was equally heavy at both industrial and residential sites, but large trucks and machinery comprised a larger proportion of the traffic in the industrial areas. Traffic was not significantly correlated with the PTE (i.e., Cu, Pb, Sb and Zn) concentrations. Plausible anthropogenic contaminant sources include vehicles (e.g., brake and tire wear, vehicle emissions) and several industrial activities including metal works, oil processing, and waste incineration. Street sweeping was effective in removal of large organic debris and inorganic RDS, but it was ineffective in removing the geochemically important fraction, i.e., <125 μm. © 2012 Elsevier Ltd.
dc.description.urihttp://libproxy1.nus.edu.sg/login?url=http://dx.doi.org/10.1016/j.jenvman.2011.11.017
dc.sourceScopus
dc.subjectAsia
dc.subjectContaminants
dc.subjectElemental enrichment ratios
dc.subjectLand use
dc.subjectPollutant load index
dc.subjectRoad dust
dc.subjectStreet sweeping
dc.subjectUrban pollution
dc.typeArticle
dc.contributor.departmentGEOGRAPHY
dc.description.doi10.1016/j.jenvman.2011.11.017
dc.description.sourcetitleJournal of Environmental Management
dc.description.volume101
dc.description.page151-163
dc.description.codenJEVMA
dc.identifier.isiut000303306800019
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