Determination of copper(II) based on its inhibitory effect on the cathodic electrochemiluminescence of lucigenin

被引：10
|
作者：
Gao, Wenyue [1 ,2 ]
Hui, Pan [1 ,3 ]
Qi, Liming [1 ,2 ]
Liu, Zhongyuan [1 ]
Zhang, Wei [1 ]
Xu, Guobao [1 ]
机构：
[1] Chinese Acad Sci, Changchun Inst Appl Chem, State Key Lab Electroanalyt Chem, 5625 Renmin St, Changchun 130022, Jilin, Peoples R China
[2] Univ Chinese Acad Sci, Beijing 100049, Peoples R China
[3] Changchun Univ Sci & Technol, Sch Chem & Environm Engn, Changchun 130022, Jilin, Peoples R China
来源：
MICROCHIMICA ACTA | 2017年 / 184卷 / 03期
基金：
中国国家自然科学基金;
关键词：
Glassy carbon electrode; Cyclic voltammetry; Linear sweep voltammetry; Stern-Volmer equation; Superoxide ion radical; Water analysis; Spiking; Quenching; Cyclic voltammogram; Chemiluminescence; LABEL-FREE DETECTION; ELECTROGENERATED CHEMILUMINESCENCE; CU2+ IONS; NANOPARTICLES; LUMINESCENCE; VOLTAMMETRY; ELECTRODES; CU(II); SENSOR;
D O I：
10.1007/s00604-016-2054-6
中图分类号：
O65 [分析化学];
学科分类号：
070302 ; 081704 ;
摘要：
A simple method is described for the determination of copper(II) ions based on the cathodic electrochemiluminescence (ECL) of lucigenin which is quenched by Cu(II). The blue ECL is best induced at -0.45 V (vs. Ag/AgCl) at a scan rate of 50 mV center dot s(-1). Under optimum conditions, the calibration plot is linear in the 3.0 to 1000 nM Cu(II) concentration range. The limit of detection is 2.1 nM at a signal-to-noise ratio of 3. Compared to other analytical methods, the one presented here is simple, fast, selective and cost-effective. It has been successfully applied in the analysis of copper ions in spiked tap water samples with recoveries ranging from 93.0% (at 50 nM concentration) to 105.7% (at 150 nM).
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页码：693 / 697
页数：5
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