Journal
ANALYST
Volume 134, Issue 4, Pages 731-737Publisher
ROYAL SOC CHEMISTRY
DOI: 10.1039/b811630j
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Funding
- National Nature Science Foundation of China [20735002, 20877019]
- Youth Science and Technology Talent Innovation Program of Fujian Province [2008F3081]
- science and technology project of education department of Fujian province [JB07168]
- External Foundation of Ministry of Education Key Laboratory of Analysis and Detection Technology for Food Safety [FS06004]
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An electrochemiluminescence (ECL) detection system equipped with an electrically heated indium-tinoxide (ITO) electrode was constructed. The heated ITO electrode (HITOE) coupled the advantages of a heated electrode with the optical transparency property of ITO glass. Compared with the conventional heated electrode, the HITOE is integrated into the ECL cell, which could save the expensive luminescent reagent. The temperature of the electrode (T-e) could be accurately controlled by electrically heating. The Ru(bpy)(3)(2+)/TPrA ECL system and the colchicine/Ru(bpy)(3)(2+) ECL system were used to evaluate the developed ECL detection system. The higher sensitivity and lower RSD of ECL detection for tri-n-propylamine (TPrA) and colchicine were gained by moderately heating the electrode. The proposed method has been successfully utilized to the assay of colchicine in a spiked human serum sample. The results indicated that the developed ECL detection system could provide high sensitivity and excellent reproducibility for analytical practice.
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