铋膜电极伏安法测定硫酸软骨素  

Determination of chondroitin sulfate using bismuth-film electrode by voltammetry

作　　者：杜美菊[1] 张传杰[1] 

机构地区：[1]商丘师范学院化学系,河南商丘476000

出　　处：《化学研究与应用》2010年第8期1088-1090,共3页Chemical Research and Application

摘　　要：The electrochemical behavior of chondroition sulfate(CS)at bismuth film modified glassy carbon electrode was studied by cyclic voltammetry and linear scan voltammetry.At pH 5.0 B-R buffer solution,a sensitive irreversible reductive peak was found at a potential of-0.9 V(vs SCE).Experimental conditions were optimized.An excellent linear relation between the CS concentration and peak current was obtained over the 0.8 to 16mg·L-1 range.Linear regression equation was ip=1.842+7.489c(mg·L-1)with coefficients R greater than 0.9976.A concentration detection level was as low as 0.5 mg·mL-1.Impurity effect was carefully considered.This work provides a fast and simple approach for the determination of CS.The results were satisfying when the method was extended to the analysis of a real CS sample.The electrochemical behavior of chondroition sulfate（CS）at bismuth film modified glassy carbon electrode was studied by cyclic voltammetry and linear scan voltammetry.At pH 5.0 B-R buffer solution,a sensitive irreversible reductive peak was found at a potential of-0.9 V（vs SCE）.Experimental conditions were optimized.An excellent linear relation between the CS concentration and peak current was obtained over the 0.8 to 16mg·L-1 range.Linear regression equation was ip=1.842＋7.489c（mg·L-1）with coefficients R greater than 0.9976.A concentration detection level was as low as 0.5 mg·mL-1.Impurity effect was carefully considered.This work provides a fast and simple approach for the determination of CS.The results were satisfying when the method was extended to the analysis of a real CS sample.

关 键 词：NAFION 铋膜电极 硫酸软骨素 循环伏安法 线性扫描伏安法 

分 类 号：O657.1[理学—分析化学]