Microdetermination of organic compounds concerned in destructive phenols in industrial waste water is studied in this paper Spectrophotometry was used for the analysis of hydroquinone The hydroquinone could react with sodium phosphotungstate to form a blue complex in the treatment process of waste water containing phenol by photoelectrocatalytic degradation method The affecting factors were discussed and the optimum parameters were obtained The absorbance of the colored product was measured at 745*#nm, 20*#℃～25*#℃ with pH value of 8～10 and the amount of indicator (sodium phosphotungstate) of 5*#ml for 5*#min The hydroquinone could be determined in the presence of other middle products, such as phenol, benzoquinone and maleic anhydride The recovery of hydroquinone was in range from 958% to 1013% and relative standard deviation was less than 39% It proves to be a practical way for easy analysis of hydroquinone in enviroment monitoring with the advantages of application of relatively simple apparatus, small amount of sample, and rapid and convenient
