Facile electrochemiluminescence sensing platform based on Gd2O3:Eu3+ nanocrystals for organophosphorus pesticides detection in vegetable samples

Xidian Yue; Qing Hua; Wenjuan Zhang; Feiyan Tang; Xiaobing Wang; Feng Luan; Xuming Zhuang; Chunyuan Tian

doi:10.1016/j.foodchem.2023.137985

Facile electrochemiluminescence sensing platform based on Gd₂O₃:Eu³⁺ nanocrystals for organophosphorus pesticides detection in vegetable samples

Food Chem. 2024 Apr 16:438:137985. doi: 10.1016/j.foodchem.2023.137985. Epub 2023 Nov 13.

Authors

Xidian Yue¹, Qing Hua², Wenjuan Zhang², Feiyan Tang², Xiaobing Wang², Feng Luan², Xuming Zhuang³, Chunyuan Tian⁴

Affiliations

¹ College of Life Sciences, Yantai University, Yantai 264005, China.
² College of Chemistry and Chemical Engineering, Yantai University, Yantai 264005, China.
³ College of Chemistry and Chemical Engineering, Yantai University, Yantai 264005, China. Electronic address: xmzhuang@iccas.ac.cn.
⁴ College of Chemistry and Chemical Engineering, Yantai University, Yantai 264005, China. Electronic address: cytian@ytu.edu.cn.

PMID: 37979273
DOI: 10.1016/j.foodchem.2023.137985

Abstract

In this work, europium ion-doped gadolinium trioxide nanocrystals (Gd₂O₃:Eu³⁺ NCs) were successfully synthesized and applied to construct an electrochemiluminescence (ECL) sensor. Compared with pure Gd₂O₃, the doping of Eu³⁺ ions caused enhanced ECL intensity and more stable signals. Based on the excellent ECL performance of Gd₂O₃:Eu³⁺ NCs, we constructed a new ECL sensing platform for the detection of organophosphorus pesticides (OPs). The ECL sensor showed a good linear relationship in the concentration range of 1 nM to 1 pM, with a limit of detection of 0.12 pM (S/N = 3) for dichlorvos (DDVP). In addition, the constructed ECL sensor was applied for the detection of DDVP in vegetable samples, and good recoveries were obtained. The results indicated that the ECL sensor exhibited fantastic performance properties and had good application prospects in OPs detection.

Keywords: Electrochemiluminescence; Food safety; Gd(2)O(3):Eu(3+) nanocrystals; Organophosphorus pesticide.

MeSH terms

Biosensing Techniques* / methods
Dichlorvos
Electrochemical Techniques / methods
Limit of Detection
Luminescent Measurements / methods
Nanoparticles* / chemistry
Organophosphorus Compounds
Pesticides*
Vegetables

Substances

Organophosphorus Compounds
Pesticides
Dichlorvos