A new electrochemiluminescent detection system equipped with an electrically controlled heating cylindrical microelectrode |
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| Authors: | Zhenyu Lin Jianjun Sun Jinhua Chen Liang Guo Guonan Chen |
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| Institution: | a The MOE Key Laboratory of Analysis and Detection Technology for Food Safety, Fuzhou University, Fuzhou, Fujian 350002, China
b Department of Chemistry, Fuzhou University, Fuzhou, Fujian 350002, China |
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| Abstract: | A new electrochemiluminescent (ECL) detection system equipped with an electrically controlled heating cylindrical microelectrode (HME) was developed in this paper. The cylindrical microelectrode made of platinum wire (25 μm in diameter, 6 mm in long) was used as the working electrode of the ECL detection system, the temperature of the electrode could be controlled electrically. The Ru(bpy)32+-ECL and Ru(bpy)32+-C2O42−-ECL systems were used to evaluate this ECL detection system. The detection limit for oxalate was found to be 3.0 × 10−4 mol/L when Te (temperature of the HME) was 22 °C, and found to be 3.0 × 10−6 mol/L at 80 °C, which indicates that the detection limit can be improved greatly at higher Te, based on which, it is possible to establish a more sensitive method for measurement of ECL by using a heated microelectrode. |
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| Keywords: | Heated cylindrical microelectrode Electrochemiluminescence Ru(bpy)32+ Oxalate |
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