Substance load in rainwater runoff from different streets in Hamburg.

25 substances were determined in runoff, wet and bulk deposition samples from different sampling sites in Hamburg, (a street in an industrial area, a thoroughfare and a small street in a residential area). The runoff from the industrial road and the main street showed similar pollution levels. The surface water from the industrial area contained higher concentrations of As, whereas the main street showed higher concentrations of Pb, Sb and Zn. The runoff from the residential area was loaded substantially lower. Several elements e.g. Co, Cr, V were found to be almost completely adsorbed to particles, but some more toxical elements e.g. Cd, Cu were found at a high percentage in the soluble phase.