四羟基蒽醌修饰活性炭碳糊电极阳极溶出法测铜  

Stripping Voltammetric Determiantion of Copper(Ⅱ) with Tetrahydroxyanthraquione-Activated Carbon Paste Electrode

作　　者：齐菊锐[1] 李陟[1] 许宏鼎[1] 

机构地区：[1]吉林大学化学学院,长春130023

出　　处：《分析化学》2005年第12期1740-1742,共3页Chinese Journal of Analytical Chemistry

摘　　要：报道了将四羟基蒽醌吸附在稻壳基活性炭上,用直接混合法制成碳糊化学修饰电极及其在测定Cu(Ⅱ)中的应用.实验确定了阳极溶出法测定Cu(Ⅱ)的最佳操作条件.支持电解质为0.03 mol/L H2SO4,富集电位在-0.8V, 该电极对Cu(Ⅱ)在5.0×10-8～1.0×10-2 mol/L范围内分段有良好的线性响应;实际样品分析浓度小于1.0×10-2 mol/L的均不需要稀释,高浓度的样品可不设富集时间,从-0.8 V处直接做阳极扫描,低浓度的样品则需设相应的富集时间,富集时间300 s时,检出限为5.0×10-9 mol/L,Mg2+、Mn2+、Al3+ 和Fe3+等十余种共存离子基本不干扰.用本法分析人发中的铜与光谱法对照,结果令人满意.The utility of activated carbon paste electrode with tetrahydroxyanthraquinone for stripping voltammetric determination of Cu（ Ⅱ ） in 0.03 mol/L H2SO4 medium was demonstrated. At the enrichment potential of -0.8 V, a linear response to Cu（ Ⅱ ） whose concentration range from 5.0 × 10^-8 mol/L to 1.0 × 10^-2 mol/L was obtained. The method has good selectivity over a wide variety of inorganic ions. It has been applied to the determination of Cu （ Ⅱ ） in human hair, absorption spectroscopy. the results were agreement with those obtained by atomic

关 键 词：活性炭碳糊电极 四羟基蒽醌 铜 阳极溶出法 

分 类 号：O614.121[理学—无机化学] O657.1[理学—化学]