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 x 10(-6) - 1 x 10(-4) mol l(-1) (DCTP), 1 x 10(-7) - 1 x 10(-4) mol l(-1) (DPP), 1 x 10(-8) - 1 x 10(-6) mol l(-1) (DPV) and 1 x 10(-9) - 1 x 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 x 10(-10) mol l(-1) ( drinking water) and 2 x 10(-9) mol l(-1) ( river water).