Issue 21, 2014

Sensitive electrochemiluminescence detection of matrine based on Ru(bpy)32+ and mesoporous silica nanosphere modified electrodes

Abstract

In this paper, a simple and sensitive ECL sensor based on mesoporous silica (mSiO2) nanospheres was constructed for the quantitative detection of matrine (MT). Electrochemical and ECL behaviors were investigated with Ru(bpy)32+/mSiO2/Nafion modified electrodes and the sensor was used for the detection of matrine under a Ru(bpy)32+/tripropylamine (TPA) system. The influence of the pH and scan rate was studied. Under optimum conditions the experimental results indicated that the sensor had an excellent ECL efficiency and showed a good response to the concentration of MT with a linear range from 1.5 × 10−6 M to 2.0 × 10−3 M. The lowest detection limit was 0.5 μM with a relative standard deviation of 5.47%. This constructed ECL sensor could be applicable for real sample analysis.

Graphical abstract: Sensitive electrochemiluminescence detection of matrine based on Ru(bpy)32+ and mesoporous silica nanosphere modified electrodes

Article information

Article type
Paper
Submitted
16 Jul 2014
Accepted
28 Aug 2014
First published
28 Aug 2014

Anal. Methods, 2014,6, 8592-8597

Sensitive electrochemiluminescence detection of matrine based on Ru(bpy)32+ and mesoporous silica nanosphere modified electrodes

C. Miao, B. Wu, H. Cao and N. Jia, Anal. Methods, 2014, 6, 8592 DOI: 10.1039/C4AY01668H

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