| 生物小分子次黄嘌呤在银电极上的电化学性质 |
| ELECTROCHEMICAL BEHAVIOR OF HYPOXANTHINE ON SILVER ELECTRODE |
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| 摘要: 本文研究了银电极上次黄嘌呤的电化学特性。在含次黄嘌呤的醋酸～醋酸钠缓冲溶液中(pH3.7)，在0.35～0V电位区间内，银电极上出现一个还原峰，扫速50 mV/s时，其峰电位约在0.15V。该电极过程为单电子单质子过程。电化学和光谱电化学结果表明：这是由于次黄嘌呤与银形成难溶性化合物吸附于银电极表面而造成的。实验测得此难溶化合物的组成为1∶1，其溶度积为3.10×10-7。用DPSV作阴极溶出分析，峰电流与次黄嘌呤浓度在8.0×10-7～1.0×10- |
| 关键词: 次黄嘌呤 银电极 电化学 光谱电化学 阴极溶出 |
| 基金项目: |
| Abstract: In this paper, electrochemical behavior of hypoxanthine on silver electrode was investigated. In acetate buffer (pH=3.7) a reduction peak was found in presence of hypoxanthine. The cathodic potential is about 0.15 V when sweep rate was 50 mV/s. The electrode reaction was one-electron transfer reaction with one proton. The results of experiments indicated that the hypoxanthine combined with silver to form a insoluble compound and this insoluble compound adsorbted on surface of silver electrode. For the insoluble compounds, its constitution was 1∶1 and its solubility product was 3.10×10-7. The peak current relates to the concentration of hypoxanthine in 8.0×10-7～1.0×10-4 by using DPSV. This method can be used to test the base of purine. |
| Keywords: hypoxanthine silver electrode electrochemistry cathodic stripping |
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| 赵广超,王雪梅,陈洪渊.生物小分子次黄嘌呤在银电极上的电化学性质[J].无机化学学报,1997,13(2):164-167. |
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