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中文摘要：
本文利用层层自组装技术制备了一种新型的Nafion/GNPs/RTIL/MWNTs/GC电极。利用循环伏安法研究对乙酰氨基酚（ACOP）在该修饰电极上的电化学特性。结果表明：ACOP在裸GC电极上表现为不可逆的电极过程,而在Nafion/GNPs/RTIL/MWNTs/GC电极上表现为很好的可逆性,氧化峰电位由0.562 V移至0.413 V,具有0.149 V的电位降;其还原峰电位为0.384 V,峰电位差仅为29 mV。该修饰电极与MWNTs/GC电极和裸GC电极比,具有更高的电催化活性;同时可加速电极与ACOP间的电子转移。本文探索了不同实验条件对该电极性能的影响,在优化的实验条件下,检测ACOP药物的线性浓度范围为2×10 7～4.0×10 4 mol.L 1,线性相关系数为r=0.999 2,其检出限为2.6×10 8 mol.L 1（信噪比为3∶1）;回收率为97.9%～100.8%。将该电极用于对乙酰氨基酚片剂中ACOP的含量测定,并与药典方法比较无显著性差异。
英文摘要：
A novel type of carbon nanotube-coated Au nanoparticle and BF4 composite modified glassy carbon electrode was fabricated by a layer-by-layer self-assembly technique.The electrochemical performance of acetaminophen（ACOP） on the modified electrode was investigated by cyclic voltammetry.The Nafion/GNPs/RTIL/MWNTs/GC electrode showed an excellent electrocatalytic activity for the oxidation of ACOP and accelerated electron transfer between the electrode and ACOP.For ACOP,the reversible electrochemical process was observed on the Nafion/GNPs/RTIL/MWNTs/GC electrode,while irreversible electrochemical process occurred on the GC electrode.For the Nafion/GNPs/RTIL/MWNTs/GC electrode,the anodic peak potential of ACOP was moved from 0.562 V to 0.413 V,with a potential drop of 149 mV.At the same time,the reduction peak potential was 0.384 V,and the potential difference was only 29 mV.It was shown that the modified electrode possessed higher electrocatalytic activity and more sensitive effect for the detection of ACOP than both MWNTs/GC electrode and GC electrode.The effects of the different experimental conditions on the electrochemical behaviors of ACOP were explored.Under the optimum conditions of preparation and experimental,the linear calibration curves of ACOP were obtained in a wide range of 2×10 7 to 4.0×10 4 mol L 1 with a correlation coefficient 0.999 2 and a detection limit of 2.6×10 8 mol L 1（the ratio of signal to noise,3∶1）.The recovery rate was 97.9 %-100.8%.This method can be used to determine ACOP in paracetamol tablets with satisfactory results.
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