Electrochemiluminescence sensor based on EuS nanocrystals for ultrasensitive detection of mercury ions in seafood

被引：22

作者：

Hua, Qing ^{[1
]}

Tang, Feiyan ^{[1
]}

Wang, Xiaobin ^{[1
]}

Li, Min ^{[1
]}

Gu, Xiaowen ^{[1
]}

Sun, Wenjie ^{[1
]}

Luan, Feng ^{[1
]}

Tian, Chunyuan ^{[1
]}

Zhuang, Xuming ^{[1
]}

机构：

[1] Yantai Univ, Coll Chem & Chem Engn, Yantai 264005, Peoples R China

来源：

SENSORS AND ACTUATORS B-CHEMICAL | 2022年 / 352卷

基金：

中国国家自然科学基金;

关键词：

Electrochemiluminescence; Europium sulfide; Mercury; Seafood; QUANTUM DOTS; NANOPARTICLES; CDSE; BIOSENSOR; EXPOSURE; SYSTEM;

D O I：

10.1016/j.snb.2021.131075

中图分类号：

O65 [分析化学];

学科分类号：

070302 ; 081704 ;

摘要：

In this work, the electrochemiluminescence (ECL) of europium sulfide nanocrystals (EuS NCs) in K2S2O8 cathode co-reagents was studied. Based on selective quenching of the ECL emission from EuS NCs by Hg2+, a novel label-free ECL sensor for the highly sensitive and selective detection of Hg2+ was developed. A linear response between the ECL intensity and the concentration of Hg2+ was obtained in the range from 0.1 pM to 10(5) pM, achieving a detection limit of 0.028 pM. Moreover, this sensor was also successfully applied to the detection of Hg2+ in seafood with good recovery. The current study provides a green and feasible method for the detection of trace Hg2+ in seafood.

引用

页数：7

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