双酚A在SDS现场自组装膜与[bupy]PF_6复合修饰碳糊电极上的电催化氧化及电分析方法  

Electrocatalytic Oxidation of Bisphenol A at SDS Selfassembled Monolayer and [Bupy]PF_6 Modified Carbon Paste Electrode and Its Electrochemical Determination

作　　者：张艳梅[1] 段成茜[1,2] 高作宁[1] 

机构地区：[1]宁夏大学能源化工重点实验室化学化工学院,银川750021 [2]宁夏医科大学高等卫生职业技术学院,银川750004

出　　处：《应用化学》2012年第3期353-358,共6页Chinese Journal of Applied Chemistry

摘　　要：研究了双酚A(BPA)在十二烷基硫酸钠(SDS)现场自组装膜与离子液体N-丁基吡啶六氟磷酸盐([bupy]PF6)复合修饰碳糊电极(SDS-[bupy]PF6/CPE)上的电催化氧化行为和电化学动力学性质。实验结果表明,在SDS-[bupy]PF6/CPE上BPA发生了一受扩散控制的不可逆电化学氧化过程,用循环伏安(CV)法和计时电流(CA)法测得BPA在SDS-[bupy]PF6/CPE上的电极反应过程动力学参数。用方波伏安(SWV)法测得BPA氧化峰电流(Ipa)与其浓度在1.0×10-5～1.0×10-3mol/L范围内呈良好的线性关系,线性方程为Ipa(μA)=2.635+51.30c(10-3 mol/L),r=0.998 1,检测限(S/N=3)为3.01×10-7 mol/L,同时运用SWV法对湖水样品中双酚A的含量进行了电化学定量测定。The electrocatalytic oxidation and electrochemical kinetics of bisphenol A（BPA） were investigated at sodium dodecyl sulphate （SDS） self-assembled monolayer and N-butylpyridinium hexafluorophospbate （[ bupy ] PF6 ） modified carbon paste electrode （CPE）. The experimental results indicated that BPA electrochemical behavior exhibited an irreversible electrochemical oxidation process at SDS-[ bupy] PFJCPE. The electrochemical kinetic parameters were determined by cyclic voltammetry （CV）, chronoamperometry （CA）. The oxidation peak current of BPA had a good linear relationship with the concentration of BPA in the range of 1.0× 10^-5 - 1.0×10^-3 mol/L with a correlation coefficient of 0. 9981, and a detection limit of 3.01×10^-7 mol/L（S/N =3） was obtained by square wave voltammetry（SWV）. The method was applied to determine quantitative BPA content in lake water samples with satisfactory results.

关 键 词：双酚A 十二烷基硫酸钠 N-丁基吡啶六氟磷酸盐 碳糊电极 电催化氧化 

分 类 号：O646[理学—物理化学]