Monitoring the atmospheric deposition of particulate-associated urban contaminants, Coventry, UK
Based on the determination of Zn, Cu, Pb, Ni, and Cd in soils, street dusts, and sediments from the urban area of Coventry, UK, two sets of bioaccumulators were located around Coventry City Centre. The first set of 12 peat-containing seed trays were located on a busy road traffic island with a second set placed for comparison with a rural area. One tray was removed each month from each site for analysis. Whilst the concentrations of most metals were higher in the urban area, the temporal trends were similar, with the concentrations of Pb indicating that urban levels had declined. The second set of biomonitors of three moss bags were located at 16 sites in the City Centre; one bag was removed every 2 months, making a 6- month study in all. The temporal trends for the moss bags were generally increasing concentrations with time, although two sites declined in the last sampling month. Concentrations of Zn and Cu in the street dusts, sediments, and soils were high, as was Zn in both biomonitors and Ni in just the moss bags.
KeywordsAtmospheric Deposition Ring Road Domestic Coal Burning Airborne Heavy Metal Urban Deposit
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