用碳糊修饰电极测定氨基酸的伏安法研究 Ⅱ.组氨酸在氧化铝修饰碳糊电极上的电化学行为  

Voltammetric Determination of Amino Acidsby Modified Carbon Paste Electrodes. Study on the Electrochemical Behaviour of Histidine on Alumina _ modified Carbon Paste Electrode

作　　者：邹永德[1] 王进[1] 莫金垣[1] 张润建[1] 

机构地区：[1]中山大学化学系

出　　处：《分析测试学报》1999年第3期47-49,共3页Journal of Instrumental Analysis

摘　　要：用１０％氧化铝的修饰碳糊电极研究了测定组氨酸的伏安法。在０．０５ｍｏｌ／Ｌ丁二酸－硼砂（ｐＨ＝３．５）底液中在－０．６Ｖ出现一还原峰，结合２．５次微分技术测定组氨酸，在３．２０～１３０μｍｏｌ／Ｌ浓度范围内有良好的线性关系，相对标准偏差为３．４％，检出限为０．４μｍｏｌ／Ｌ。检测灵敏度比文献报道有较大的提高。文中还讨论了电极过程。The electrochemical reduction of histidine has been studied by a alumina _ modified carbon paste electrode. In 50 mmol/L butane diacid-borax (pH=3.5) there is a reduction peak. With the 2.5th order differential technique the electrode gives a good linearity in the range of 3.20130 mol/L for histidine, a relative standard deviation of 3.4% and a detection limit of 0.4 mol/L. The sensitivity of the determination is improved as compared with the method reported in literatures. The electrode mechanism was discussed.

关 键 词：组氨酸 氧化铝 碳糊电极 伏安法 测定 修饰电极 

分 类 号：Q517.03[生物学—生物化学] O629.711[理学—有机化学]