Sensitive electrochemiluminescence detection of matrine based on Ru(bpy) sub(3) super(2+) and mesoporous silica nanosphere modified electrodes

In this paper, a simple and sensitive ECL sensor based on mesoporous silica (mSiO sub(2)) nanospheres was constructed for the quantitative detection of matrine (MT). Electrochemical and ECL behaviors were investigated with Ru(bpy) sub(3) super(2+)/mSiO sub(2)/Nafion modified electrodes and the senso...

Full description

Saved in:
Bibliographic Details
Published in:Analytical methods 2014-10, Vol.6 (21), p.8592-8597
Main Authors: Miao, Chongchong, Wu, Beina, Cao, Hongmei, Jia, Nengqin
Format: Article
Language:English
Subjects:
Construction
Electrodes
Mathematical analysis
Nanospheres
Optimization
Sensors
Silicon dioxide
Standard deviation
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:In this paper, a simple and sensitive ECL sensor based on mesoporous silica (mSiO sub(2)) nanospheres was constructed for the quantitative detection of matrine (MT). Electrochemical and ECL behaviors were investigated with Ru(bpy) sub(3) super(2+)/mSiO sub(2)/Nafion modified electrodes and the sensor was used for the detection of matrine under a Ru(bpy) sub(3) super(2+)/tripro pylamine (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 super(-6) M to 2.0 10 super(-3) M. The lowest detection limit was 0.5 mu M with a relative standard deviation of 5.47%. This constructed ECL sensor could be applicable for real sample analysis.
ISSN:1759-9660
1759-9679
DOI:10.1039/c4ay01668h