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Chemical fractionation of Cu and Zn in stormwater, roadway dust and stormwater pond sediments

Environmental Pollution

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Abstract

This study evaluated the chemical fractionation of Cu and Zn from source to deposition in a stormwater system. Cu and Zn concentrations and chemical fractionation were determined for roadway dust, roadway runoff and pond sediments. Stormwater Cu and Zn concentrations were used to generate cumulative frequency distributions to characterize potential exposure to pond-dwelling organisms. Dissolved stormwater Zn exceeded USEPA acute and chronic water quality criteria in approximately 20% of storm samples and 20% of the storm duration sampled. Dissolved Cu exceeded the previously published chronic criterion in 75% of storm samples and duration and exceeded the acute criterion in 45% of samples and duration. The majority of sediment Cu (92–98%) occurred in the most recalcitrant phase, suggesting low bioavailability; Zn was substantially more available (39–62% recalcitrant). Most sediment concentrations for Cu and Zn exceeded published threshold effect concentrations and Zn often exceeded probable effect concentrations in surface sediments.

Additional Publication Details

Publication type:
Article
Publication Subtype:
Journal Article
Title:
Chemical fractionation of Cu and Zn in stormwater, roadway dust and stormwater pond sediments
Series title:
Environmental Pollution
Volume
158
Issue:
6
Year Published:
2010
Language:
English
Publisher:
Elsevier
Publisher location:
Amsterdam, Netherlands
Contributing office(s):
National Research Program - Eastern Branch
Description:
7 p.
Larger Work Type:
Article
Larger Work Subtype:
Journal Article
First page:
2143
Last page:
2149