摘要
该文利用石墨烯修饰电极,构建了一种测定6-苄氨基嘌呤的新型的电化学方法。循环伏安实验表明,石墨烯修饰电极能显著降低6-苄氨基嘌呤的测定电位,提高其响应电流。6-苄氨基嘌呤在石墨烯修饰电极表面的电化学过程为扩散控制。在优化的实验条件下,6-苄氨基嘌呤与峰电流在浓度为1.0×10-8~1.0×10-6mol/L范围内呈现良好的线性关系,检测限为5.0×10-9 mol/L。考察了一些无机离子和有机化合物对6-苄氨基嘌呤测定的干扰,结果表明该传感器有较好的抗干扰能力。加标回收实验表明该修饰电极的回收率在91.0%~104.5%之间,表明该传感器能用于实际样品的检测。
In this paper, a novel electrochemical sensor was built to determine 6-benzylaminopurine （6-BAP） by a graphene modified electrodes. Cyclic Voltammogram results indicated that the graphene modified electrodes could significantly reduce the detection potential and increase the response current for 6-BAP. 6-BAP experienced a diffusion control process at the surface of the graphene modified electrode. Under the optimized experimental conditions, a good linear relationship between the currents and the concentrations of 6-BAP in the range of 1.0~ 10-s~ 1.0 ~ 10-6 mol/L of with the detection limit of 5.0 x 104 mol/L was obtained. Interferences of some inorganic and organic species on the response have been studied. The standard recovery tests showed that the recovery rate ranging between 91.0% ~ 104.5%. This indicated that this sensor is effective for 6-BAP detection.
出处
《化学传感器》
CAS
2015年第1期28-32,共5页
Chemical Sensors
基金
国家自然科学基金资助项目(21275124
21275125)
