乙炔黑-离子液体复合膜修饰电极溶出伏安法测定水样中痕量Cd(Ⅱ)  

Determination of Trace Cd(Ⅱ)in Water Samples by Stripping Voltammetry with Acetylene Black-Ionic Liquid Composite Film Modified Electrode

作　　者：谭红艳[1] 郭晶[1] 费俊杰[1] 

机构地区：[1]湘潭大学化学学院环境与友好化学教育部重点实验室,湖南湘潭411105

出　　处：《分析科学学报》2015年第5期633-636,共4页Journal of Analytical Science

基　　金：国家自然科学基金(No.21275123);教育部博士点基金(No.20134301110005);湖南省杰出青年基金(No.14JJ1019);湖南省教育厅项目(No.12C0388)

摘　　要：本文建立了一种采用乙炔黑（AB）与离子液体（ILs）复合膜修饰玻碳电极,通过线性扫描溶出伏安法灵敏测定Cd（Ⅱ）的电化学方法。实验结果表明,AB/ILs复合膜修饰电极能显著提高测定Cd（Ⅱ）的灵敏度。在优化的实验条件下,Cd（Ⅱ）的浓度在6.80×10-8~1.63×10-5 mol·L-1范围内与其阳极溶出峰电流呈良好的线性关系,相关系数r=0.9991,检出限为1.0×10-8 mol·L-1。将该方法应用于实际水样中Cd（Ⅱ）的测定,结果较好。In this paper,a novel and sensitive electrochemical method was established for the determination of Cd（Ⅱ）by linear sweep stripping voltammetry on an acetylene black（AB）and ionic liquids（ILs）composite film modified electrode.Experimental results showed that the AB/ILs composite film coated GCE greatly improvd the sensitivity of cadmium determination.Under the optimized conditions,the linear range was found to be 6.80×10-8-1.63×10-5 mol/L,with a detection limit of 1.0×10-8 mol/L.Finally,the method was successfully applied to the determination of Cd（Ⅱ）in water samples.

关 键 词：乙炔黑 离子液体 化学修饰电极 溶出伏安法 Cd(Ⅱ) 

分 类 号：O657.1[理学—分析化学]