Electrochemiluminescence Behavior of Luminol at Closed Bipolar Electrode and Its Analytical Application
10.11895/j.issn.0253-3820.131191
- VernacularTitle:两极隔离式双极电极的电化学发光行为及其分析特性研究
- Author:
Along SUN
;
Xingwang ZHENG
- Publication Type:Journal Article
- Keywords:
Electrochemiluminescnce;
Closed bipolar electrode;
Luminol;
Solution conductance
- From:
Chinese Journal of Analytical Chemistry
2014;(8):1221-1224
- CountryChina
- Language:Chinese
-
Abstract:
A new closed bipolar electrode electrochemiluminescence ( ECL)-based device was designed, and further used to investigate the ECL behaviors of luminol in this device. Our results showed that, while a suitable voltage was applied to the two poles of the closed bipolar electrode, both the positively charged ions and luminol-based anionic ions could be enriched on the two poles of the closed bipolar electrode, respectively. More importantly, the ECL signals, generated from the electro-oxidation of luminol on anodic pole, were found to be related to the total amount of positively charged ions on the cathodic pole of the closed bipolar electrode. Under the optimum experimental conditions, the ECL response was linearly to the concentration of analyte in the range of 1. 0×10-9-1. 0×10-8 mol/L with a detecting limit of 1. 1×10-10 mol/L. Based on this finding, a new ECL method for sensing the solution conductance was developed.
