Spectrophotometric Determination of Trace Volatile Phenol in Water Samples

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 lambda(max) = 480 nm. epsilon = 3.25 x 10(5), 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 mu g,/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.