Szukana fraza: [Abstract = The irradiation with ultraviolet rays was carried out in solutions of variable exposure time of 1.5\; 3.0 and 5.0 minutes. These tests were carried out at different pH reaction environment. The efficiency of removal of PAH ranged from 23 to 48% of the total content of these compounds. Hydrocarbon 3 \- and 4\- ring is properly in the range of 0 to 23% and from 59 to 73%. The efficciency of degradation depended on the exposure time and the pH of thesolution.]

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