The influence of the atmospheric deposition on trace metal concentrations is found in all parts of the hydrological cycle (e.g. soils, rivers, lakes, estuaries and the ocean). In this respect the atmosphere plays a unique role. Additionally, transition metals act as catalyst in the atmosphere (e.g. the oxidation of sulfur dioxide) (Graedel and Weschler, 1981; Lindberg, 1981). Compared with other parts of the hydrological cycle, metals in the atmosphere have a short residence time, estimated to vary between days and weeks (Hidy, 1973). However, within this short time span, these trace metals are able to travel large distances.
KeywordsTrace Metal Dust Storm Deposition Velocity Trace Metal Concentration Surface Microlayer
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