Cadmium ions mediated turn-on electrogenerated chemiluminescence of ZnS nanoparticles for highly selective cadmium detection in seafood

文献类型： 外文期刊

第一作者： Chen, Shan

作者： Chen, Shan;Chen, Jingwen;Qian, Mingyan;Liu, Jun;Zheng, Yuhao;Sun, Hao;Chen, Jinghu;Fang, Yimin;Zhang, Biqi;Sun, Jian-Jun;Huang, Zongxiong;Xu, Guohailin

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关键词： Electrogenerated chemiluminescence; Cation exchange; Cadmium ion; ZnS nanoparticles; Food samples

期刊名称：ANALYTICA CHIMICA ACTA （ 影响因子：6.2； 五年影响因子：5.9 ）

ISSN： 0003-2670

年卷期： 2023 年 1266 卷

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收录情况： SCI

摘要： Cd2+ is one of the most toxic heavy metal ions that can be easily accumulated in human body via food chain. Thus, the onsite detection of Cd2+ in food is very important. However, present methods for Cd2+ detection either require the use of large equipment, or suffer from the severe interference from other analogical metal ions. This work establishes a facile Cd2+ mediated turn-on ECL method for highly selective detection of Cd2+ via cation exchanging with the nontoxic ZnS nanoparticles, owing to the unique surface-state ECL properties of CdS nanomaterials. The linear range of the calibration curve is from 7.0 x 10-8 to 1.0 x 10-6 M, while other analogical metal ions do not interfere, facilitating the selective detection of Cd2+ in oyster samples. The result agrees well with that obtained using atomic emission spectroscopy, indicating the potential for wider application of this approach.

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