Determination of Catechol with Graphene Modified Glassy Carbon Electrode
Qimei Luo, Wang Hui-xian, LIU Dengyou*, Ling Wang
Abstract
Open-access reader
Qimei Luo, Wang Hui-xian, LIU Dengyou*, Ling Wang
Abstract
Open-access reader
摘要: 制备了用于测定邻苯二酚(CAT)的石墨烯修饰电极,并应用循环伏安法研究了CAT在该修饰电极上的电化学行为;用差分脉冲伏安法研究了测试底液的pH值对该修饰电极性能的影响,结果表明,此修饰电极在含不同浓度CAT的PBS溶液(pH=7.0)中测定,响应电流与CAT浓度在5.0×10-8~5.6×10-4 mol/L范围内有良好的线性关系,相关系数r=0.9919,检出限为6.68×10-9 mol/L(S/N=3)。 与其它几种修饰电极相比,石墨烯修饰电极制备简单、响应时间快、操作简便,稳定性和重现性良好,有应用价值。
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摘要: 制备了用于测定邻苯二酚(CAT)的石墨烯修饰电极,并应用循环伏安法研究了CAT在该修饰电极上的电化学行为;用差分脉冲伏安法研究了测试底液的pH值对该修饰电极性能的影响,结果表明,此修饰电极在含不同浓度CAT的PBS溶液(pH=7.0)中测定,响应电流与CAT浓度在5.0×10-8~5.6×10-4 mol/L范围内有良好的线性关系,相关系数r=0.9919,检出限为6.68×10-9 mol/L(S/N=3)。 与其它几种修饰电极相比,石墨烯修饰电极制备简单、响应时间快、操作简便,稳定性和重现性良好,有应用价值。
Key concepts: Graphene, Catechol, Glassy carbon, Materials science, Electrode, Carbon fibers, Chemical engineering, Nanotechnology