Determination of volatile phenols by a flow injection chemiluminescent quench method

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Abstract
The ability of phenols to quench the chemiluminescence of p-chlorobenzenediazonium fluoroborate in a medium of alkaline hydrogen peroxide was studied, and a flow injection chemiluminescent quench method for the determination of volatile phenols in polluted water was established. The linear calibration ranges are 0–6.0, 0–5.0, 0–4.5 and 0–8.0 µg ml–1 and the detection limits are 0.015, 0.020, 0.025 and 0.030 µg ml–1 for phenol, o-nitrophenol, p-cresol and 2,4-xylenol, respectively. This method is more sensitive than the 4-aminoantipyrine direct spectrophotometric method and the flow injection spectrophotometric method. The relative standard deviation is 3.0% for 1 µg ml–1 phenol.

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