Abstract
Monthly bulk and daily wet only samples have been collected at two sites in Sweden and analyzed for trace metals (Cd, Cu, Fe, Mn, Pb, Zn, Cr, Ni and V). Concentrations in the daily samples varied over four orders of magnitude with the most pristine samples (lowest 10th percentile) approaching levels found in Greenland snow. A comparison of deposition estimates from the two data sets indicates that Cd, Fe, Pb, Zn, Cr, Ni and V wet deposition can be reasonably estimated by monthly bulk sampling. Due to contamination from the forest canopy Mn wet deposition is overestimated by the bulk method. For Cu, contamination of the samples occurred in both collectors and indicates that new sampling protocols are needed for accurately determining wet deposition fluxes.
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