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目的:研究碳纳米管修饰石墨电极的制备方法与条件,利用碳纳米管修饰石墨电极对马来酸氯苯那敏的电催化作用,建立一种对马来酸氯苯那敏进行定量分析的方法。方法:在0.12mol·L-1磷酸二氢钾-磷酸氢二钠+1mol·L-1硝酸钾缓冲体系(pH=6.86)中,采用循环伏安法(CV)测定马来酸氯苯那敏。结果:马来酸氯苯那敏浓度在7.6×10-5～2.6×10-3mol·L-1范围内与其氧化峰电流呈良好的线性关系(r=-0.9997),检出限为5.0×10-6mol·L-1,样品分析的RSD为1.4%(n=8),回收率为96.0%～104.8%。结论:本方法可用于马来酸氯苯那敏的测定。
OBJECTIVE: To study the preparation method and conditions of carbon nanotubes modified graphite electrodes, and to evaluate the electrocatalytic activity of graphite electrodes modified with carbon nanotubes on chlorpheniramine maleate to establish a method for the quantitative analysis of chlorpheniramine maleate method. METHODS: Cyclic voltammetry (CV) was used to determine chlorobenzene maleate in 0.12 mol·L-1 monobasic potassium phosphate-disodium phosphate + 1 mol·L-1 potassium nitrate buffer (pH = 6.86) Min. Results: The chlorpheniramine maleate showed a good linear relationship with the oxidation peak current (r = -0.9997) in the range of 7.6 × 10-5 ~ 2.6 × 10-3 mol·L-1 with a detection limit of 5.0 × The RSD of the sample was 1.4% (n = 8) and the recovery was 96.0% -104.8%. Conclusion: This method can be used for the determination of chlorpheniramine maleate.