HPLC DETERMINATION OF TRACE LEVELS OF BENZYLCHLORIDE, CHLOROBENZENE, NAPHTHALENE, AND BIPHENYL IN ENVIRONMENTAL-SAMPLES

A simple HPLC method with on-line preconcentration has been developed for the separation and the determination of trace levels of benzylchlo ride, chlorobenzene, naphthalene, and biphenyl in tap and surface wate r. The separation was achieved on the column 150 x 3.2 mm filled with Separon SGX C-18, d(p)=5 mu m with the spectrophotometric detection at 220 and 250 nn. To enhance the selectivity of separation a water - me thanol gradient was used. The method permits the measurement of benzyl chloride, chlorobenzene, naphthalene, and biphenyl in environmental sa mples, with the detection limits of 10 ppt of naphthalene, 55 ppt of b iphenyl, 90 ppt of benzylchloride, and 185 ppt of chlorobenzene (sampl e volume was 100 ml of water samples). The assayed procedure has been applied for the quantitative determination of benzylchloride, chlorobe nzene, naphthalene and biphenyl in tap water and river water.