| 尿酸在聚6-甲基香豆素修饰的玻碳电极上的电化学行为 |
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| 引用本文： | 曾涵,龚兰新,魏莉英,常伟.尿酸在聚6-甲基香豆素修饰的玻碳电极上的电化学行为[J].天然产物研究与开发,2010,22(1). |
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| 作者姓名： | 曾涵 龚兰新 魏莉英 常伟 |
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| 作者单位： | 新疆师范大学生命科学与化学学院,乌鲁木齐,830054 |
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| 摘 要： | 制备了聚6-甲基香豆素修饰玻碳电极,研究了尿酸(UA)在该修饰电极上的电化学行为。实验结果表明:在pH=5.0的磷酸盐缓冲溶液中,扫描速率为50mV/s时,尿酸在修饰电极上于0.352V处产生一个灵敏的氧化峰,在0.278V处有一弱的还原峰。经线性扫描伏安法测定,氧化峰电流与尿酸浓度在2.5×10-6～1.0×10-5mol/L范围内表现出良好的线性关系,检出限为1.0×10-6mol/L。将修饰电极在常温下放置50d及将体系温度升高到75℃时,修饰电极对尿酸的响应电流大体不变,结果满意。
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| 关 键 词： | 6-甲基香豆素 修饰电极 尿酸 电化学行为 |
Electrochemical Behaviors of Uric Acid on the Glassy Carbon Electrode Modified by Poly 6-methyl Coumarin |
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| ZENG Han,GONG Lan-xin,WEI Li-ying,CHANG Wei.Electrochemical Behaviors of Uric Acid on the Glassy Carbon Electrode Modified by Poly 6-methyl Coumarin[J].Natural Product Research and Development,2010,22(1). |
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| Authors: | ZENG Han GONG Lan-xin WEI Li-ying CHANG Wei |
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| Institution: | ZENG Han,GONG Lan-xin,WEI Li-ying,CHANG Wei Academy of Life Science , chemistry,Xingjiang Normal University,Urumuqi,830054,China |
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| Abstract: | Glassy carbon electrode modified with poly 6-methyl coumarin has been prepared and electrochemical behaviors of uric acid on glassy carbon electrode have been probed with Powerlab electrochemical analytical instrument.Result from experiments indicates a sensitive oxidation peak occurs at 0.352 V on modified electrode,a weak reduction peak occurs at 0.278 V when uric acid(UA)on modified electrode is in a phosphate buffer of pH 5.0;scan rate is 80 mV/s.Linear relationship is obtained between the peak current ... |
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| Keywords: | 6-methyl eoumarin modified electrode uric acid electro-chemical behavior |
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