摘要
制备了聚中性红修饰玻碳电极,通过考察对乙酰氨基酚在修饰电极上的电化学行为发现,对乙酰氨基酚在修饰电极上的还原峰、氧化法电流信号分别是裸电极上的4.17倍和8.25倍,在pH为9.16的Na2CO3-NaHCO3缓冲体系中,对乙酰氨基酚在8.00×10^(-7)mol/L~5.00×10^(-4)mol/L浓度范围内与其氧化峰电流大小呈良好线性关系:ip=0.0272c(μmol/L)+2.254(r=0.9961),检出限为2.67×10^(-7)mol/L。该方法线性范围宽,检出限低,模拟样品检测回收率在97%~107%之间。进一步研究表明,对乙酰氨基酚在聚中性红修饰玻碳电极上的反应是受吸附控制的2质子、2电子参与的反应过程。
A polyneutral red modified glassy carbon electrode was prepared,and the electrochemical behavior of acetaminophen on the modified electrode was investigated.It was found that the reduction peak and oxidation current signal of acetaminophen on the modified electrode were 4.17 and 8.25 times higher than those on the bare electrode,respectively.In the buffer system of sodium carbonate and sodium bicarbonate with pH=9.16,there is a good linear relationship between the concentration of acetaminophen in the range of 8.00×10^(-7)mol/L~5.00×10^(-4)mol/L and its oxidation peak current:ip=0.0272c(μmol/L)+2.254(r=0.9961),with a detection limit of 2.67×10^(-7)mol/L.This method has a wide linear range,low detection limit,and a simulated sample detection recovery rate between 97%~107%;further research has shown that the reaction of acetaminophen on the poly neutral red modified glassy carbon electrode was controlled by adsorption of 2 electrons and 2 protons.
作者
尚永辉
薛景文
张恒
史宸歌
温绍仪
高妮
谢斌
SHANG Yonghui;XUE Jingwen;ZHANG Heng;SHI Chenge;WEN Shaoyi;GAO Ni;XIE Bin(School of Chemistry&Chemical Engineering,Xianyang Normal University,Xianyang 712000,Shaanxi,China)
出处
《咸阳师范学院学报》
2023年第6期40-44,共5页
Journal of Xianyang Normal University
基金
咸阳师范学院拔尖人才资助项目(XSYBJ201902)
咸阳师范学院学术带头人项目(XSYXSDTR202110)
咸阳师范学院科研基金项目(XSYK19046)
国家级大学生创新创业训练计划项目(202310722022)
咸阳师范学院第七批入驻大学生创新创业基地团队项目(XSYC202113)。
关键词
对乙酰氨基酚
聚中性红修饰电极
电化学行为
acetaminophen
polyneutral red modified electrode
electrochemical behavior
