Long-range transport of trace elements to Southern Norway studied by INAA of air filters

The present work is a multi-element study of air concentrations at Birkenes, Norway, based on daily filter samples collected during 1985. Na, Al, Cl, Sc, V, Cr, Mn, Fe, Co, Zn, As, Se, Br, Ag, Sb, La are determined regularly by INAA. In addition sulfate is determined by ion chromatography and Cu, Ni, Cd and Pb by electrothermal AAS. The main aim of the study is to see whether the air concentrations of long-range transported pollutants have changed significantly since 1979 when a similar study was last performed. Classification of air samples indicates that the contribution of air pollutants from Eastern Europe is at least as high as in 1979 while that from Western Europe has decreased. This decrease is evident for Pb in particular. (author) 7 refs.; 4 figs.; 3 tabs