摘要
将介孔碳（OMC）分散在壳聚糖（CTS）溶液中,制备了介孔碳-壳聚糖修饰电极。研究了抗坏血酸（AA）在该修饰电极上的电化学行为,对实际样品中的AA进行了测定,并研究了AA的氧化机理。在最佳实验条件下,对不同浓度的AA溶液进行了测定,结果表明在9.0×10-6~9.0×10-5mol/L的范围内AA的浓度与氧化峰电流呈良好的线性关系,相关系数R2=0.9961,检出限为9.0×10-6mol/L,相对标准偏差（RSD）为3.69%（n=5）。用加标回收法对果汁中的AA进行了分析检测,加标回收率为95%~101%,结果令人满意。
The mesoporous carbon-chitosan film modified electrode was prepared by dispersing mesoporous carbon（OMC） in chitosan（CTS） solution.The electrochemical behavior and catalytic oxidation of ascorbic acid（AA） on the modified electrode were studied.There was a good linear relationship between the stripping peak current and AA concentration in the concentration range of 9.0×10-6～9.0×10-5 mol/L.The linear equation was found to be Ip=2.1319c-0.9953（Ip：A,c：mol/L）（the correlation coefficient was 0.9961） with detection limit of 9×10-6 mol/L.The relative standard deviation was 3.69%（n=5）.The developed method was applied to the determination of AA in fruit juice with the recovery in the range of 95%～101%.
出处
《分析科学学报》
CAS
CSCD
北大核心
2010年第3期315-318,共4页
Journal of Analytical Science
关键词
介孔碳
修饰电极
抗坏血酸
电化学行为
Mesoporous carbon
Modified electrode
Ascorbic acid
Electrochemical behavior
作者简介
通讯作者：陈艳玲，女，教授，博士研究生导师，主要从事电分析化学、油田化学研究．
