Spectrophotometric determination of phenol in the process of photocatalytic degradation of phenol aqueous solution with nano titania

The double-wavelength ultraviolet spectrophotometry was used to analyze the phenol in a mixed solution containing benzoquinone and phenol.The method is fast and simple.The determination wavelengths are selected as 270 and 292 nm.It was used for practical analysis in the process of photocatalytic degradation of phenol aqueous solution by nano titania with satisfactory results.The recoveries of the standard samples were 99.79%～101.17%,and the relative standard deviation was less than 0.50%.The recoveries of added standard for the samples were 99.14%～104.75%,and the relative standard deviation was less than 2.20%.The detection limit of phenol was 0.10 mg/L.