FI-Chemiluminescence Determination of Hydroquinone in River Water

Based on the sensitization effect of hydroquinone on the chemiluminescence (CL) reaction between luminol and potassium periodate in an alkaline medium of 0.10 mol·L-1 KOH,a chemiluminescence method for the determination of hydroquinone was proposed.Linear relationship between the magnitude of CL-intensity and the concentration of hydroguinone was obtained in the range of 1.0×10-8-1.5×10-7mol·L-1,with a detection limit of 8.5×10-9mol·L-1.In its application to the determination of hydroquinone in water,values of recovery found by standard addition method were in the range of 93.4%-104.4%.Mechanism of the sensitization effect on the CL-reaction was also discussed.