| 聚甘氨酸修饰碳纤维微电极差示脉冲伏安法测定尿酸 |
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| 引用本文： | 刘灵芳,王翠红,等.聚甘氨酸修饰碳纤维微电极差示脉冲伏安法测定尿酸[J].天津师范大学学报(自然科学版),2001,21(4):28-33. |
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| 作者姓名： | 刘灵芳 王翠红 |
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| 作者单位： | 郑州大学化学系 郑州450052
(刘灵芳，王翠红，张娟)，郑州大学化学系 郑州450052(冶保献) |
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| 基金项目： | 河南省杰出青年基金项目 ( 992 4)，教育部《高等学校骨干教师资助计划》资助项目 ( 1988-2 0 0 1) |
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| 摘 要： | 研究聚甘氨酸修饰碳纤维微电极（CFME）的电化学性质和在抗坏血酸存在下测定尿酸的分析方法，以及尿酸在聚合膜电极上反应的动力学参数。在选定的条件下，尿酸和抗坏血酸的峰电位分别为0.33V和0.03V，两峰电位差达300mV，可以有效地避免抗坏血酸对尿酸测定的干扰。该方法可用于实际尿样中尿酸的测定。
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| 关 键 词： | 化学修饰微电极 聚甘氨酸 尿酸 抗坏血酸 碳纤维 测定 电化学伏安法 嘌呤代谢 |
Determination of Uric Acid by Different Pulse Voltammetry Using Poly-Glycine Modified Carbon Fiber Microelectrode |
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| LIU Ling fang,WANG Cui hong,ZHANG Juan,YE Bao xian.Determination of Uric Acid by Different Pulse Voltammetry Using Poly-Glycine Modified Carbon Fiber Microelectrode[J].Journal of Tianjin Normal University(Natural Science Edition),2001,21(4):28-33. |
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| Authors: | LIU Ling fang WANG Cui hong ZHANG Juan YE Bao xian |
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| Abstract: | In this paper, we present a new method for determination of uric acid in the presence of high concentration of vitamin C by different pulse voltammetry using poly glycine modified carbon microelectrode. The electrode reaction dynamics parameters were investigated by electrochemical methods. Under the selective condition, the peak potentials of uric acid and ascorbic acid are 0. 33 V and 0.03 V respectively. Based on this point, we have established a method for determining uric acid and abstaining the interference of ascorbic acid. This method has been used in determining of trace uric acid in urine sample with satisfactory results. |
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| Keywords: | different pulse voltammetry uric acid ascorbic acid modified carbon fiber microelectrode |
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