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Urban roadway snow is exposed to heavy metals from traffic and winter maintenance practices. These anthropogenic activities generate loadings of heavy metals as well as other constituents. Heavy metals once released in the highway environment are not degraded and partition between the
dissolved and particulate-bound fractions. Parameters such as residence time, solids loadings, alkalinity, hardness and pH influence this partitioning. The study investigates Pb, Cu, Cd, Zn, Al, Ca, Na, Mg and Fe accretion and partitioning from a series of urban highway sites in Cincinnati,
Ohio. Results from partitioning analysis indicate that Pb, Cu, Cd, Zn, Al, Mg and Fe were highly particulatebound, while Na and Ca were mainly dissolved. Partition coefficient for most heavy metals in snowmelt ranged from 103 to 106 L/kg. Characterization of heavy
metal partitioning is a necessary first step towards development of best management practices to address urban highway snow pollution.
Proceedings of the Water Environment Federation is an archive of papers published in the proceedings of the annual Water Environment Federation® Technical Exhibition and Conference (WEFTEC® ) and specialty conferences held since the year 2000. These proceedings are not peer reviewed. WEF Members: Sign in (right panel) with your IngentaConnect user name and password to receive complimentary access.