Determination of zinc ion based on electrochemiluminescence of Ru(phen)3 2+ and phenanthroline

An electrochemiluminescence (ECL) method for determination of zinc ion has been developed based on the enhanced effects of zinc ion on the ECL system of Ru(phen)3 2+ and phenanthroline (phen). The ECL intensity gradually increased with increasing zinc ion concentration under optimal condition. A lin...

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Bibliographic Details
Published inSensors and actuators. B, Chemical Vol. 234; pp. 380 - 385
Main Authors Gao, Yulong, Shao, Jiantao, Liu, Fengyu
Format Journal Article
LanguageEnglish
Published 01.10.2016
Subjects
Actuators
Electrochemiluminescence
Mathematical analysis
Optimization
Regression
Reproducibility
Standard deviation
Zinc
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Summary:An electrochemiluminescence (ECL) method for determination of zinc ion has been developed based on the enhanced effects of zinc ion on the ECL system of Ru(phen)3 2+ and phenanthroline (phen). The ECL intensity gradually increased with increasing zinc ion concentration under optimal condition. A linear regression equation (IECL =213.6lg[Zn2+]+7003.6; r=0.99689, n=5) was obtained over 1.010-10-1.010-6 molL-1 zinc ion, and the detection limit was as low as 1.010-10 molL-1. For detection of 1.010-10, 1.010-8, and 1.010-6 molL-1 spiked zinc ion, the recovery ratio ranged from 101% to 103%, and the relative standard deviations were 2.10%, 0.97%, and 3.20%, respectively. These results demonstrated that the proposed method was effective and showed good reproducibility.
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ISSN:0925-4005
DOI:10.1016/j.snb.2016.05.007