Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
745650 | Sensors and Actuators B: Chemical | 2011 | 6 Pages |
Abstract
Hot electron induced cathodic electrochemiluminescence (ECL) was found at a disposable CdS modified screen printed carbon electrodes (CdS-SPCEs) during cathodic pulse polarization. The ECL behavior of the modified electrode was investigated with two emissions located at 520 nm and 580 nm. The CdS-SPCEs show very stable and reproducible ECL signal. The ECL intensity was linear with the dissolved oxygen concentration in the range of 1.7–33 mg/L with a detection limit of 0.02 mg/L (S/N = 3). In addition, a possible mechanism for ECL behavior of the modified electrode was proposed. The developed method can be applied to detect the dissolved oxygen concentration or biochemical oxygen demand (BOD).
Keywords
Related Topics
Physical Sciences and Engineering
Chemistry
Analytical Chemistry
Authors
Rui-Juan Zheng, Yi-Min Fang, Su-Fang Qin, Jing Song, Ai-Hong Wu, Jian-Jun Sun,