中南民族大学学报（自然科学版）2024，Vol.43Issue(3)：344-349,6.DOI:10.20056/j.cnki.ZNMDZK.20240308
基于纳米金修饰碳纤维微电极的电化学法测定黄芩素
Direct electrochemical determination of baicalein based on gold nanoparticles modified carbon fiber microelectrode
摘要
Abstract
AuNPs with small particle size were prepared by reducing chloroauric acid with trisodium citrate,and then modified on the surface of CFME by potentiostatic deposition to construct a highly sensitive and selective electrochemical sensor.The sensor and modified material were characterized by transmission electron microscope,scanning electron microscope and UV spectrophotometry,the electrochemical properties of baicalein on electrode before and after modification were investigated bydifferential pulse voltammetry,cyclic voltammetry and electrochemical impedance spectroscopy,the determination conditions such as scan rate,buffer pH and electrodeposition time were optimized.The results showed that AuNPs had significant electrocatalytic performance to baicalein,and the optimal modification time was 10 min.The oxidation peak current and concentration of baicalein showed good linear relationship between 0.05-10 µmol/L,and the linear regression equation were Ip(nA)=0.4409C(µmol/L)+0.7066,R2=0.998.The method has fast response and good stability,which can be used for quantitative detection of baicalein.关键词
纳米金/碳纤维微电极/修饰电极/黄芩素Key words
gold nanoparticles/carbon fiber microelectrode/modified electrode/baicalein分类
医药卫生引用本文复制引用
马雯雯,谭樟斌,潘彦冰,胡克菲,AWAIS Ihsan,程寒..基于纳米金修饰碳纤维微电极的电化学法测定黄芩素[J].中南民族大学学报（自然科学版）,2024,43(3):344-349,6.基金项目
中央高校基本科研业务费专项资金资助项目(CZH20002) （CZH20002）
中国民族医药学会项目(2020MZ152-000389) （2020MZ152-000389）
科技部"一带一路"创新人才交流外国专家项目(DL2023185001L) （DL2023185001L）
中南民族大学科研团队(KTZ20054) （KTZ20054）
