Abstract
Abstract The particulate heavy metal concentrations of Tl, Cu, Cd, Pb, Zn, Ni, Cr, and Fe were determined in the atmosphere over the Atlantic Ocean from 77°S (Antarctica) to 54°N (Europe) using the analytical method of isotope dilution mass spectrometry. The samples were collected on board of the German polar research vessel “Polarstern” during four different expedition legs from September 1987 to March 1990. Analyses of the crustal reference element Fe resulted in the calculation of enrichment factors EF(Fe), which were used for interpretation of crustal influences on heavy metal contents as well as for contamination control. The variations in concentration of the dominant crust element Fe run up to five orders of magnitude (0.22–36200 ng m−3). The region between the equator and 20°N was strongly influenced by crustal material transported by the north-eastern trades out of the Sahara. EF(Fe) values around unity and the highest measured concentrations of the dominant crustal elements Fe (36200 ng m−3), Cr...
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