β-环糊精钴铁氧化物纳米复合材料修饰电极测定对苯二酚

β-cyclodextrin-cobalt Ferrite Nanocomposite Modified Glassy Carbon Electrode for Hydroquinone Determination

基于β-环糊精钴铁氧化物纳米复合材料研制了一种新型灵敏的电化学传感器,并用于测定对苯二酚.由于在电极上对苯二酚具有高的负载容量和钴铁氧化物直立的导电性,制作的传感器的电化学响应大大提高.结果表明：该方法的线性范围为1~200μmol/L,检出限为0.12μmol/L（R SN=3）.所研制的电化学传感器具有良好的选择性和重现性,对对苯二酚合成水样进行了测定,回收率在96.0%~103.5%之间.

An electrochemical sensor based on β-cyclodextrin-cobah ferrite nauocomposite was developed for the sensitive detection of hydroquinone （HQ）. Due to the high hydroquinone-loading capacity on the electrode surface and the upstanding electric conductivity of cobalt ferrite nanocomposite, the electrochemical response of the fabricated sen- sor was greatly enhanced. The results showed that the electrochemical response of the fabricated sensor displayed excel- lent analytical performance for hydroquinone detection from 1 to 200 μmol/L with a low detection limit of 0.12μmol/ L （RsN = 3 ）. Moreover, the developed electrochemical sensor exhibited good selectivity and acceptable reproduc- ibility and could be used for the detection of hydroquinone in water samples with the recovery of 96.0% - 103.5%.