非离子表面活性剂对流动注射电化学发光的增敏作用

The Effects of Nonionic Surfactants on the Tris(2,2′-bipyridyl) Ruthenium(Ⅱ) Tripropylamine Flow Injection Electrochemiluminescence System

研究了非离子表面活性剂聚乙二醇辛基苯基醚(Triton X-100)对流动注射电化学发光的影响。结果发现,Triton X-100对检测低浓度三联吡啶钌(Ru(bpy)23+)有增强作用,而且Triton X-100的引入可以改变流动注射电化学发光分析系统中Ru(bpy)23+-三正丙胺(TPA)反应电极电位。在检测电位1.35V,进样量100μL,进样速度50μL/s条件下,对Ru(bpy)23+进行检测,检出限(S/N=3)达1.0×10-10 mol/L,较添加Triton X-100前灵敏度提高50倍。

The effects of Triton X-100 on the Ru（bpy）2＋3-tripropylamine flow injection electrochemilu-minescence（FI-ECL） system were investigated in this paper.The results showed that Triton X-100 can enhance the ECL intensity and change the applied potential for the ECL system.Under the optimal conditions,the detection limit of Ru（bpy）2＋3 was 1.0×10-10 mol/L（S/N=3） in the presence of Triton X-100 with a 50 times enhancement.