Abstract
A distillation apparatus for a continuous-flow method for determination of phenol in water is described. The colorimetric measurement step utilizes the familiar 4-aminoantipyrine method. Phenol in water can be measured at a rate of 10 samples per hour, has a sensitivity of 4.0 × 10 3 μg l −1 per unit absorbance, a limit of detection of 5 μg l −1, and a standard deviation of 1.6 μg l −1 for 20 replicates of a 100-μg l −1 sample.
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