Determination of zinc ion based on electrochemiluminescence of Ru(phen)₃²⁺ and phenanthroline

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• 作者：Yulong GaoAuthor Vitae ; Jiantao ShaoAuthor Vitae ; Fengyu Liu ; ^{liufengyu@dlut.edu.cn" class="auth_mail" title="E-mail the corresponding author}Author Vitae
• 关键词：Electrochemiluminescence (ECL) ; Phenanthroline ; Ru(phen)32+ ; Zinc ion ; Detection
• 刊名：Sensors & Actuators: B. Chemical
• 出版年：2016
• 出版时间：29 October 2016
• 年：2016
• 卷：234
• 期：Complete
• 页码：380-385
• 全文大小：1177 K

文摘

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)₃²⁺ and phenanthroline (phen). The ECL intensity gradually increased with increasing zinc ion concentration under optimal condition. A linear regression equation (I_ECL = 213.6lg[Zn²⁺] + 7003.6; r = 0.99689, n = 5) was obtained over 1.0 × 10^−10–1.0 × 10^−6 mol L^−1 zinc ion, and the detection limit was as low as 1.0 × 10^−10 mol L^−1. For detection of 1.0 × 10^−10, 1.0 × 10^−8, and 1.0 × 10^−6 mol L^−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.