利用滴涂的方法制备了石墨烯修饰电极；石墨烯修饰电极对对乙酰氨基酚(ACOP)的电化学氧化具有明显的催化作用.研究了ACOP在石墨烯修饰电极上的电化学行为,建立了测定ACOP的电化学分析新方法.考察了磷酸盐缓冲溶液的pH值对ACOP电化学行为的影响.结果表明,氧化还原峰电位随pH值升高发生负移；在pH =6.0磷酸盐缓冲溶液中,对乙酰氨基酚在修饰电极上呈现一对灵敏的氧化还原峰.对乙酰氨基酚在石墨烯修饰电极上的氧化峰峰电流与其浓度在6.00×10-7 ～4.00×10-5 mol/L范围内呈良好的线性关系,相关系数为0.9940;检出限为5.00×10-8 mol/L.其回归方程为:i(βa)(A)=3.00c +1.21 ×10-5.该修饰电极具有良好的灵敏度、选择性和稳定性,可用于对乙酰氨基酚药片分析.
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