DISTRIBUTION OF MINOR AND TRACE-METALS IN CAREZZA LAKE (ANTARCTICA) ECOSYSTEM

This paper reports the distribution of a series of metals in natural s amples collected at Carezza Lake in Antarctica, during the Italian Exp edition in the austral summer 1989/90. The considered elements are: wa ter, sediments and soil sampled from the surroundings of the lake and algae. The determination of the total concentration of the following m etals was performed: Al, As, Ca, Cd, Co, Cr, Cu, Fe, Mg, Mn, Na, Ni, P b, Zn. In addition, for sediment and soil samples, a speciation study was performed for some metals, namely Cd, Co, Cr, Cu, Fe, Mn, Ni, Zn, using the Tessier procedure.