在氢氧化铁修饰的硅油碳糊电极上微分脉冲伏安法直接测定污水中的痕量对苯二酚  

Direct Determination of Hydroquinone in Waste Water by Differential Pulse Voltammetry on Ferric Hydroxide Modified Silicone Oil-Carbon Paste Electrode

作　　者：朱永春[1] 王欢[1] 白红艳[1] 郎剑峤[1] 

机构地区：[1]辽宁省二氧化碳减排与多污染物控制重点实验室

出　　处：《光谱实验室》2006年第6期1154-1158,共5页Chinese Journal of Spectroscopy Laboratory

基　　金：国家基金资助项目(2004DFA02706)

摘　　要：将石墨粉掺有少量的氢氧化铁粉末作为催化剂,以硅油为黏结剂制成碳糊电极,微分脉冲伏安法直接测定污水中的对苯二酚,在pH 1.0 HC l支持电解质中,对苯二酚在该碳糊电极上表现为催化行为,微分脉冲的阳极峰电流在0.625—500μm ol/L浓度范围内呈较好的线性关系,ip(μA)=0.3402+0.09578C(μm ol/L)(r=0.9997,SD=0.374),检出限为0.3125μm ol/L。方法简单快速,直接用于污水中对苯二酚的测定,结果令人满意。Trace p-hydroquinone in waste water was determined directly by differential pulse vohammetry with ferric hydroxide modified silicone oil-carbon paste electrode,which shows a obvious electrochemical catalytic behavior to hydroquinone in pH 1.0 HCl solution. The good linear relation between hydroquinone concentration and anodie peak current was obtained in the rafige of 0. 625-500μmol/L with regression equation of ip （μA） = 0. 3402 ＋0. 09578C （μmol/L） （r=0. 9997, SD = 0. 374）,and detection limit of 0. 3125μmol/L. The method is simple, fast,and was applied to the determination of hydroquinone in waste water with satisfactory results.

关 键 词：对苯二酚 氢氧化铁 硅油-碳糊电极 微分脉冲伏安法 

分 类 号：O625.312[理学—有机化学]