REVERSE-PHASE EXTRACTION OF ARENES AND NITROARENES IN ENVIRONMENTAL-SAMPLES

The extraction recoveries of 24 polycyclic aromatic hydrocarbons (PAHs ) and their nitro-derivatives (N-PAHs) standards, ranging from naphtal ene (M = 128) to benzo(ghi)perilene (M = 276), and from 1-nitronaphtal ene (M = 173) to 3-nitrofluoranthene (M = 247), were determined by sol id phase extraction (SPE) on the octadecyl adsorbent phases. The recov ery procedure hag been applied to three environmental samples of diffe rent nature: urban dusts, residual of incinerator and soil. The result s show that it is possible, under controlled conditions, to obtain rep roducible, high percentage recovery, especially for PAH. The C18 phase was proven to be useful for the clean-up of the two classes of pollut ants. SPE was faster than the traditional clean-up procedures.