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| 聚氨基黑10B/Nafion修饰电极上多巴胺的检测 | |
| 引用本文： | 王春燕,唐小风,田坚,由天艳.聚氨基黑10B/Nafion修饰电极上多巴胺的检测[J].分析化学,2009,37(12). |
| 作者姓名： | 王春燕 唐小风 田坚 由天艳 |
| 作者单位： | 1. 长春理工大学,长春,130021;中国科学院长春应用化学研究所电分析化学国家重点实验室,长春,130022 2. 中国科学院长春应用化学研究所电分析化学国家重点实验室,长春,130022 3. 长春理工大学,长春,130021 |
| 摘 要： | 用电化学聚合法制备了聚氨基黑10B/Nafion修饰电极,利用循环伏安法研究了多巴胺在此修饰电极上的电化学行为.在磷酸盐缓冲溶液(pH 6.0)中,多巴胺在修饰电极上呈现可逆的氧化还原峰.其峰电位都随pH值的增加而负移.多巴胺氧化还原峰电流与其浓度在0.2～30 μmol/L范围内呈良好的线性关系;检出限为1.0×10~7 mol/L.实验结果表明:本修饰电极具有良好的重现性、稳定性和较强的抗干扰能力.将此修饰电极用于多巴胺注射液和小牛血清中多巴胺的检测,结果令人满意. |
| 关 键 词： | 修饰电极 氨基黑10B 多巴胺 电催化 |
Determination of Dopamine on Poly(amino black 10B)/Nafion Modified Electrode |
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| WANG Chun-Yan,TANG Xiao-Feng,TIAN Jian,YOU Tian-Yan.Determination of Dopamine on Poly(amino black 10B)/Nafion Modified Electrode[J].Chinese Journal of Analytical Chemistry,2009,37(12). | |
| Authors: | WANG Chun-Yan TANG Xiao-Feng TIAN Jian YOU Tian-Yan |
| Institution: | WANG Chun-Yan1,2,TANG Xiao-Feng2,TIAN Jian1,YOU Tian-Yan2 1(Changchun University of Science and Technology,Changchun 130021) 2(State Key Laboratory of Electroanalytical Chemistry,Changchun Institute of Applied Chemistry,Chinese Academy of Sciences,Changchun 130022) |
| Abstract: | A poly(amino black 10B)/Nafion modified glassy carbon(GC) electrode for the detection of dopamine(DA) has been developed. The modified electrode showed an excellent electrocatalytic effect on the oxidation of DA. In cyclic votammetric measurements, the redox peak current increased linearly with the concentration of DA in the range of 2.0×10~(-7) 3.0×10~(-5) mol/L in PBS of pH 6.0, with a correlation coefficient of 0.9993 and 0.9991, respectively. The detection limit(S/N=3) was 1.0×10~(-7) mol/L. Moreover, the modified electrode exhibited good repeatability and long-time stability, and avoided the interference of ascorbic acid. The modified electrode has been used for the determination of DA in the injections and calf serum with good recovery and reproducibility. |
| Keywords: | Nafion Modified electrode Amino black 10B Nafion dopamine electrocatalysis |
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