摘要
利用电化学还原法制备了还原氧化石墨烯修饰电极(rGO/GCE)。采用循环伏安法研究了丹皮酚在rGO/GCE上的电化学行为。结果表明,rGO/GCE对丹皮酚有较好的电催化活性。考察了缓冲溶液pH值、扫描圈数、富集时间、扫速等对丹皮酚电化学响应的影响,建立了检测丹皮酚的标准曲线。丹皮酚峰电流与丹皮酚浓度在4.0×10^(-6)~8.0×10^(-5) mol·L^(-1)范围内有良好线性关系:Ipa=0.49 c(μmol·L^(-1))+8.46(R2=0.9786),检出限为1.0×10^(-6) mol·L^(-1)。将此方法应用于丹皮酚软膏样品中丹皮酚含量的测定,回收率为90.0%~108.6%。
The reduced graphene oxide modified electrode(rGO/GCE)was prepared by electrochemical reduction method.The electrochemical behavior of paeonol on rGO/GCE was studied by cyclic voltammetry.The results showed that rGO/GCE had good electrocatalytic activity for paeonol.The effects of pH value,scanning cicle number,enrichment time,sweep rate on the electrochemical response of paeonol were investigated.A standard curve for detecting paeonol was established.The concentration has a good relationship with the oxidation peak current:Ipa=0.49 c(μmol·L^(-1))+8.46(R2=0.9786)in the range of 4.0×10-6~8.0×10-5 mol·L^(-1).The detection limit is 1.0×10-6 mol·L^(-1).The method was applied for the determination of paeonol in the paeonol ointment sample.The recovery rate was 90.0%to 108.6%.
作者
李玉
王玲
王兰
金宝丹
赵建国
LI Yu;WANG Ling;WANG Lan;JING Bao-dan;ZHAO Jian-guo(School of Material and Chemical Engineering,Zhengzhou University of Light Industry,Zhengzhou 450001,China;College of Chemistry and Chemical Engineering,Zhengzhou Normal University,Zhengzhou 450044,China)
出处
《化学研究与应用》
CAS
CSCD
北大核心
2021年第9期1673-1678,共6页
Chemical Research and Application
基金
河南省科技攻关项目(212102310516)资助
郑州轻工业大学众创空间孵化项目(2019ZCKJ203)资助。
关键词
石墨烯
修饰电极
丹皮酚
应用
graphene
modified electrode
paeonol
application
