摘要
提出了基于鲁米诺和醋酸纤维素修饰碳糊电极构建H2O2电化学发光传感器的新方法。在最佳实验条件下,该传感器具有重现性好,抗干扰能力强和选择性好等优点,H2O2浓度在4.0×10-6～4.0×10-5mol L范围内与相对电化学发光强度呈线性关系。该方法测定H2O2的检出限为1.6×10-6mol L,相对标准偏差为1.4%,相关系数为0.9978。
A novel electrochemiluminescence (ECL) sensor for the determination of H_2O_2 was developed by immobilizing luminol and cellulose acetate on the surface of the carbon paste electrode. Compared to that of the conventional ECL method for H_2O_2, the presented sensor has advantages of higher selectivity, good reproducibility. Under the optimum experimental conditions developed, the sensor responds linearly to H_2O_2 concentration in the range of 4×10^(-6)～4×10^(-5) mol/L. The detection limit is 1.6×10^(-6) mol/L, and the relative standard deviation of 1.4% for 8 measurements of 4×10^(-5) mol/L H_2O_2 standard solution is also obtained.
出处
《分析试验室》
CAS
CSCD
北大核心
2004年第11期18-21,共4页
Chinese Journal of Analysis Laboratory
关键词
电化学发光
化学修饰碳糊电极
鲁米诺
H2O2
Electrochemiluminescence
Chemically modified carbon electrode
Luminol
H_2O_2
