VOLTAMMETRIC METHOD FOR THE DETERMINATION OF ZN, CD, PB, CU AND NI ININTERSTITIAL WATER

To determine heavy metals in interstitial water from Baltic sea sedime nts a sampling method with subsequent voltammetric determination is de scribed. Copper, lead, zinc and cadmium are determined in the UV-diges ted samples of interstitial water by differential pulse anodic strippi ng voltammetry while nickel is determined by adsorption voltammetry. T he determination of five metals in one sample in a wide concentrations range is possible using a low cost apparatus. The profiles of the met al concentrations in interstitial water of subsequent layers of sedime nts, sampled from Puck Bay, Gdansk Bay, the Bornholm area and the Slup sk area are presented.