A novel fluorescent and photothermal probe based on nanozyme-mediated cascade reaction for detecting organophosphorus pesticide residues

IF 5.6 1区化学 Q1 CHEMISTRY, ANALYTICAL Talanta Pub Date : 2024-07-25 DOI:10.1016/j.talanta.2024.126620

Siyu Zhang, Zheng Wang, Yingying Feng, Chuang Jiang, Hui Li, Zhenyu Yu, Yaqing Xiao, Ruyan Hou, Xiaochun Wan, Yingnan Liu

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Abstract

In this study, a nanozyme (ZIF-Co-Cys) with high oxidase-like catalytic activity was prepared, and a ratiometric fluorescent/photothermal dual-mode probe was constructed for organophosphorus pesticides (OPs) detection based on the competitive effect of ZIF-Co-Cys and the enzymatic reaction product of acid phosphatase (ACP) on o-phenylenediamine and the inhibition effect of OPs on ACP activity. Using dimethyl dichloroviny phosphate (DDVP) as the model, both the fluorescence intensity ratio and the temperature change of the probe solution exhibited an excellent correlation with OPs concentration. The detection limits were 1.64 ng/mL and 0.084 ng/mL, respectively. Additionally, the detection of DDVP residues in real samples verified the outstanding anti-interference and accuracy of the probe. This work not only provided a complementary dual-mode method for the accurate and rapid detection of OPs residues in complex samples, but also supplied a new insight into the design of a multi-mode sensing platform based on the cascade reaction of nanozyme.

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基于纳米酶介导的级联反应的新型荧光和光热探针，用于检测有机磷农药残留。

本研究制备了一种具有高氧化酶样催化活性的纳米酶（ZIF-Co-Cys），并根据ZIF-Co-Cys与酸性磷酸酶（ACP）的酶促反应产物对邻苯二胺的竞争效应以及OPs对ACP活性的抑制效应，构建了一种用于有机磷农药（OPs）检测的比率荧光/光热双模式探针。以二氯乙烯基磷酸二甲酯（DDVP）为模型，探针溶液的荧光强度比和温度变化与 OPs 浓度有很好的相关性。检测限分别为 1.64 纳克/毫升和 0.084 纳克/毫升。此外，实际样品中 DDVP 残留的检测也验证了该探针出色的抗干扰性和准确性。这项工作不仅为准确、快速地检测复杂样品中的 OPs 残留提供了一种互补的双模式方法，而且为基于纳米酶级联反应的多模式传感平台的设计提供了新的思路。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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文献相关原料

公司名称	产品信息	采购帮参考价格
麦克林	L-Cys	￥12.00~￥184330.12
阿拉丁	3,3,5,5-tetramethylbenzidine (TMB)	￥28.00~￥27737.23
阿拉丁	dimethyl dichloroviny phosphate (DDVP)	￥149.00~￥5082.00
上海源叶	AAP
上海源叶	prochloraz (Proch)
上海源叶	ACP (derived from wheat germ)
上海源叶	carbendazim (Carbe)
上海源叶	acetamiprid (Aceta)
麦克林	l -Histidine (L-His)
麦克林	2-methylimidazole (C4H6N2)
麦克林	glucose (Glu)
麦克林	OPD
麦克林	cobaltous acetate (Co(CH3COO)2)
阿拉丁	glyphosate (Glyph)
阿拉丁	bovine serum albumin (BSA)
阿拉丁	tebuconazole (Tebue)
阿拉丁	chlorpyrifos (CPF)
阿拉丁	dimethoate (Dimet)

来源期刊

Talanta 化学-分析化学

CiteScore

12.30

自引率

4.90%

发文量

861

审稿时长

29 days

期刊介绍： Talanta provides a forum for the publication of original research papers, short communications, and critical reviews in all branches of pure and applied analytical chemistry. Papers are evaluated based on established guidelines, including the fundamental nature of the study, scientific novelty, substantial improvement or advantage over existing technology or methods, and demonstrated analytical applicability. Original research papers on fundamental studies, and on novel sensor and instrumentation developments, are encouraged. Novel or improved applications in areas such as clinical and biological chemistry, environmental analysis, geochemistry, materials science and engineering, and analytical platforms for omics development are welcome. Analytical performance of methods should be determined, including interference and matrix effects, and methods should be validated by comparison with a standard method, or analysis of a certified reference material. Simple spiking recoveries may not be sufficient. The developed method should especially comprise information on selectivity, sensitivity, detection limits, accuracy, and reliability. However, applying official validation or robustness studies to a routine method or technique does not necessarily constitute novelty. Proper statistical treatment of the data should be provided. Relevant literature should be cited, including related publications by the authors, and authors should discuss how their proposed methodology compares with previously reported methods.