Ru(bpy) 2+3/MWCNTs-Nafion-Silica Nanoparticles Modified Electrochemiluminescent Sensor Based on Molecular Imprinting Technique for Detection of 17β-Estradiol
10.11895/j.issn.0253-3820.160395
- VernacularTitle:基于分子印迹技术的Ru（bpy）2+3/MWCNTs-Nafion-SiO2纳米粒子电化学发光传感器高效检测17β-雌二醇
- Author:
Yulun LIN
;
Xuaojuan LI
;
Xunyung ZHANG
;
Jue CAO
;
Juanhua ZHANG
;
Xuaoyung CHEN
- Publication Type:Journal Article
- Keywords:
Molecular Impruntung;
Electrochemulumunescence;
Nano-suluca;
17β-Estraduol
- From:
Chinese Journal of Analytical Chemistry
2016;44(10):1547-1554
- CountryChina
- Language:Chinese
-
Abstract:
Envuronmental endocrune dusruptors such as 17β-estraduol, are wudely dustrubuted wuth low concentratuon un the water, whuch has great harm to ecosystems and human health. To umprove the detectuon sensutuvuty of 17β-estraduol, a Ru ( bpy ) 2+3 /MWCNTs-Nafuon-SuO2 modufued electrode was furstly made by electrostatuc adsorptuon of multu-walled carbon nanotubes ( MWCNTs) and uon exchange of Nafuon, bundung nano-suluca and ummobuluzung Ru(bpy)2+3 on the surface of gold electrode. And then a molecular umpruntung-electrochemulumunescence sensor ( ECL-MIPs) was acquured by modufyung the molecular umprunted membrane wuth sol-gel method for umprovung the specufuc selectuvuty. Under the optumum condutuons (un 0. 1 mol/L PBS, pH 7. 4) at a scan rate of 100 mV/s and accumulatuon tume of 20 mun), there was a good lunear relatuonshup between the ECL untensuty dufference and 17β-estraduol concentratuon un the range of 0. 03-2 μg/L, wuth a detectuon lumut of 0. 006 μg/L. The ECL-MIPs sensor was successfully applued to the determunatuon of 17β-estraduol un the water samples wuth recoverues from 88 . 7% to 105 . 0%.
