PMID: 11917984Mar 29, 2002Paper

Application of the multimedia urban model to compare the fate of SOCs in an urban and forested watershed

Environmental Science & Technology
D A Priemer, Miriam L Diamond

Abstract

A multimedia model has been developed to estimate the dynamics of semivolatile organic compounds (SOCs) in urban areas. The model is based on a Level III fugacity model of Mackay and consists of six compartments: air, surface water, sediment, soil, vegetation, and an organic film that coats impervious surfaces. The model was used to illustrate the effect of impervious surfaces in urban areas by parametrization for downtown, Toronto, Canada, and modification of the same area to simulate forested conditions. With illustrative emissions of PCB homologues to air, the model indicates that most chemicals are lost by advection, with the remainder undergoing air-to-surface (organic film or vegetation) transfer. Under urban conditions chemicals with Log[K(OA)] < 7.5 volatilize from the film into air where they are susceptible to advection and photolytic degradation. Chemicals with Log[K(OA)] > 7.5 are washed off the film to surface waters where they may undergo volatilization, advection, sedimentation, and degradation. Both loss mechanisms from the film increase the overall mobility of SOCs in the urban relative to the forested environment. In forested areas, vegetation more efficiently accumulates gas- and particle-phase SOCs and subse...Continue Reading

Citations

Oct 1, 2015·Environmental Science & Technology·Alyson M BaergenD James Donaldson
Nov 5, 2005·Risk Analysis : an Official Publication of the Society for Risk Analysis·Heather A Jones-OtazoG Mark Richardson
Dec 3, 2014·The Science of the Total Environment·Elisa TerzaghiAntonio Di Guardo
Jan 28, 2012·Chemosphere·Susan A CsiszarLouis J Thibodeaux
Apr 7, 2017·The Science of the Total Environment·Elisa TerzaghiAntonio Di Guardo
Jan 10, 2018·Environmental Science. Processes & Impacts·Melissa MorselliAntonio Di Guardo
Feb 23, 2010·Environmental Science & Technology·Miriam L DiamondMatthew Robson
Sep 20, 2018·Environmental Science & Technology·Timothy F M RodgersMiriam L Diamond
Jul 2, 2003·Environmental Science & Technology·Qin-Tao LiuBagher Bahavar
Aug 7, 2003·Environmental Science & Technology·T E McKone, D H Bennett
Aug 9, 2005·Environmental Science & Technology·Heather A Jones-OtazoBryony Wilford

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