Collect. Czech. Chem. Commun. 1986, 51, 1587-1594

Polarographic behaviour of petroleum components in aqueous solutions: A study using DPP and convective adsorption accumulation

Robert Kalvoda and Ladislav Novotný

UNESCO Laboratory of Environmental Electrochemistry at The J. Heyrovský Institute of Physical Chemistry and Electrochemistry, 118 40 Prague 1


Tensametric behaviour of solutions of petroleum and its fractions in aqueous base electrolytes was studied by differential pulse polarographic method (DPP) using a stationary mercury drop electrode with adsorptive accumulation. The results indicate that water pollution with petroleum can be determined by DPP, the sensitivity of the determination depending on the quality of the pollutant and on the composition of the base electrolyte. Well utilizable calibration curves were obtained with Diesel oil at concentrations from 30-50 μl/l to 0.5 mg/l and with Saratov petroleum from 0.1-0.2 mg/l to 3.3 mg/l. Use of adsorptive accumulation led to a marked increase of the sensitivity of the analysis.