Polarographic and Voltammetric Determination of Trace Amounts of 3-Nitrofluoranthene

The polarographic behavior of 3-nitrofluoranthene was investigated by DC tast polarography (DCTP) and differential pulse polarography (DPP), both at a dropping mercury electrode, differential pulse voltammetry (DPV) and adsorptive stripping voltammetry (AdSV), both at a hanging mercury drop electrode. Optimum conditions have been found for its determination by the given methods in the concentration ranges of 1 × 10 -6 -1 × 10 -4 mol l -1 (DCTP), 1 × 10 -7 -1 × 10 -4 mol l -1 (DPP), 1 × 10 -8 -1 × 10 -6 mol l -1 (DPV) and 1 × 10 -9 -1 × 10 -7 mol l -1 (AdSV), respectively. Practical applicability of these techniques was demonstrated on the determination of 3-nitrofluoranthene in drinking and river water after its preliminary separation and preconcentration using liquid-liquid and solid phase extraction with the limits of determination 4 × 10 -10 mol l -1 (drinking water) and 2 × 10 -9 mol l -1 (river water).