DETERMINATION OF VOLATILE PHENOLS BY A FLOW-INJECTION CHEMILUMINESCENT QUENCH METHOD

The ability of phenols to quench the chemiluminescence of p-chlorobenz enediazonium fluoroborate in a medium of alkaline hydrogen peroxide wa s studied, and a now injection chemiluminescent quench method for the determination of volatile phenols in polluted water was established, T he linear calibration ranges are 0-6.0, 0-5.0, 0-4.5 and 0-8.0 mu g ml (-1) and the detection limits are 0.015, 0.020, 0.025 and 0.030 mu g m l(-1) for phenol, o-nitrophenol, p-cresol and 2,4-xylenol, respectivel y, This method is more sensitive than the 4-aminoantipyrine direct spe ctrophotometric method and the flow injection spectrophotometric metho d, The relative standard deviation is 3.0% for 1 mu g ml(-1) phenol.