分析测试学报2013，Vol.32Issue(1)：74-78,5.DOI:10.3969/j.issn.1004-4957.2013.01.011
硅溶胶-纳米金修饰金电极电化学发光法测定苦参碱的研究
Determination of Matrine Based on Silica Sol-Nano-gold Modified Gold Electrode Using Electrochemiluminescence
摘要
Abstract
Based on the sensitization effect of matrine on Ru(bpy)2+3 electrochemiluminescence system , an electrochemiluminescence method for the determination of matrine at silica sol - nano-gold modified gold electrode was established according to the advantages of sol-gel immobilization method and electrocatalysis of gold nanoparticles. The electrochemical and ECL characteristics of matrine at the modified electrode were studied, and the modified electrode exhibits good electrochemical activity and ECL response. Under the optimum conditions, the calibration curve was linear over matrine concentration in the range of 1.5×10-7 - 1. 5×10-4 mol/L(r2 =0. 998 4), with a detection limit(S//V = 3) of 7.3×10-9 mol/L. The RSD(n=8) for determination of 1.5×10-5 mol/L matrine was 1. 4% . The spiked recoveries were in the range of 98%-102% , and RSD(n = 5) was 1. 8% . The proposed method showed high selectivity and sensitivity, and was applied in the analysis of matrine in tablet with satisfactory results.关键词
电化学发光/联吡啶钌/硅溶胶/纳米金/苦参碱Key words
electrochemiluminescence/ Ru(bpy)2+ 3/ silica sol/ nano-gold/ matrine分类
化学化工引用本文复制引用
罗应,李利军,邓春燕,程昊,孙科,李彦青..硅溶胶-纳米金修饰金电极电化学发光法测定苦参碱的研究[J].分析测试学报,2013,32(1):74-78,5.基金项目
广西自然科学基金资助项目(0832062) （0832062）
