【摘要】 在碱性介质中,高碘酸钾氧化鲁米诺产生化学发光,对苯二酚对此反应具有极强的增敏作用,据此建立了鲁米诺-高碘酸钾-对苯二酚化学发光体系测定对苯二酚的方法。对苯二酚溶液浓度在1.0×10-8~1.5×10-7mol.L-1范围内与化学发光强度呈线性关系,检出限为8.5×10-9mol.L-1,用于河水中对苯二酚的测定并测得其回收率在93.4%~104.4%之间。探讨了对苯二酚的增敏机理。更多还原

【Abstract】 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.更多还原