聚铬黑T修饰玻碳电极方波伏安法测定对羟基苯乙酮  

Determination of p-hydroxyacetophenone at a glassy carbon electrode modified with poly( eriochrome black T) by square wave voltammetry

作　　者：司晓晶[1,2] 罗倩倩[3] 罗立强[3] 魏友利[3] 丁亚平[1,3] 

机构地区：[1]上海大学材料科学与工程学院,上海200444 [2]上海震旦职业学院,上海201908 [3]上海大学化学系,上海200444

出　　处：《分析试验室》2014年第3期249-253,共5页Chinese Journal of Analysis Laboratory

基　　金：国家自然基金(21271127;61171033);上海市科委发展基金项目(12nm0504200;12dz1909403)资助

摘　　要：建立了铬黑T修饰玻碳电极方波伏安法测定对羟基苯乙酮（P．hyd）的电化学方法。运用循环伏安法在含有0．5mmol／L铬黑T的0．1mol／LNaOH溶液中制备聚铬黑T膜，并用扫描电镜、红外光谱、电化学阻抗等技术进行了表征。在pH4．5的磷酸盐缓冲溶液中，P—hyd在908mV（vs．SCE）处的峰电流与其浓度在1—160μmol／L范围内呈良好的线性关系，检出限0．15μmol／L（S／N=3），相对标准偏差小于2％。A novel poly （efiochrome black T, PEBT） modified glassy carbon electrode was developed to determine p-hydroxyacetophenone （p-hyd） by square wave voltammetry （SWV）. A thin film of EBT was deposited on the surface of glassy carbon electrode in 0. 1 mol/L NaOH containing 0. 5 mmoL/L PEBT by cyclic voltammetry. Scanning electron microscopy, Fourier transform infrared spectroscopy and electrochemical impedance spectroscopy were carried out to characterize the film. SWV reveals an oxidation peak of p-hydat 908 mV（vs. SCE） whose current is linear in the range of 1 - 160 μmol/L in 0. 1 mol/L phosphate buffer solution （pH 4. 5） with detection limit of 0. 15 μmol/L （ S/N = 3 ）. The presented modified electrode has good anti- interference ability and stability. Furthermore, the relative standard deviations for both repeatability and reproducibility are less than 2%.

关 键 词：化学修饰电极 聚铬黑T 对羟基苯乙酮 方波伏安法 

分 类 号：O657.1[理学—分析化学]