THE ANALYSIS OF PAHS NITROGEN DERIVATIVES IN THE SEWAGE SLUDGES OF UPPER SILESIA, POLAND

The dimethylformamide extracts from sewage sludges from a chosen sewag e - treatment plant in highly industrialized region of Poland were inv estigated. Using the column chromatography with Al2O3 and silicic acid as the stationary phases, the fraction of azaarenes has been separate d. GC-MS analysis of azaarenes fraction made it possible to identify 1 0 azaarenes and several of their alkyl derivatives, which dominate in the organic matter extracted from sewage sludges. The silicic acid col umn chromatography in connection with the reduction of nitroarenes and derivatization with pentafluoropropionic acid anhydride yielded an en riched nitrofraction. Nitroarenes present in this fraction as amide de rivatives were also analysed by GC-MS method. There was found presence of 3 nitroarenes and their methyl derivatives.