Spectrophotometric Determination of Trace Volatile Phenol in Water Samples

Abstract

Using a surface active agent Triton X-100 instead of CHCl₃ as extraction agent, utilize the cloud point phenomena, under the optimum condition, spectrophotometry was used to determine the phenol quantity in enriched phase. The maximum absorption of colour substance is at l_max = 480 nm. e = 3.25 × 10⁵, Beer's law is followed in the content scope of 0-2.8 mg/L of volatile phenol. Detection limit of the method was 2.0 μg/L. The determination of volatile phenol in surface and irrigate water was performed and the standard addition recovery of volatile phenol was 95.9 % -103.6 %. The relative standard deviation of 10 replicate determinations was 2.15 %-2.49 %. The accuracy and precision were all satisfactory.