论文部分内容阅读
利用含有连续腺嘌呤碱基模块的DNA(CA DNA)构建的双层纳米金修饰的玻碳电极。利用循环伏安法研究了5-羟色胺(5-HT)在此修饰电极上的电化学行为。发现对于5-HT的氧化,CA DNA构建的电极比巯基DNA构建的电极能够起到更明显的电催化作用。利用循环伏安法(CV)考察了5-HT测定的优化条件,并发现其浓度在6.0×10-8~1.0×10-6 mol/L范围内与氧化峰电流呈良好的线性关系。该电极可于实际样品的测定。
Double Nano gold-modified glassy carbon electrode constructed with DNA containing consecutive adenine base moieties (CA DNA). The electrochemical behavior of 5-hydroxytryptamine (5-HT) on this modified electrode was investigated by cyclic voltammetry. It was found that for the oxidation of 5-HT, the electrode constructed by CA DNA can play a more significant electrocatalytic activity than the electrode constructed by thiol DNA. The optimum conditions for the determination of 5-HT were investigated by cyclic voltammetry (CV). It was found that there was a good linear relationship between the oxidation peak current and the concentration in the range of 6.0 × 10-8 ~ 1.0 × 10-6 mol / L. The electrode can be measured in real samples.