Construction of a portable Eu-MOF-loaded ratio fluorescence test paper for sensitive detection of nitenpyram

IF 4.9 2区化学 Q1 CHEMISTRY, ANALYTICAL

Microchemical Journal Pub Date : 2025-07-17 DOI:10.1016/j.microc.2025.114591

Yan Fan , Xueqin Sun , Fang Lu , Chengying Zhang , Yi Luo , Lei Wang

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Abstract

The neonicotinoid pesticide of Nitenpyram (NTP) is widely used in global agriculture systems, sensitive detection of NTP is critical for safeguarding human health and food safety. A europium-based metal-organic framework (Eu-MOF) was rationally synthesized based on density functional theory (DFT) method. This engineered material showed an effective NTP sensing capability with a detection limit of 5.431 μM. Subsequently, the Eu-MOF was immobilized within a paper-based analytical platform to establish a ratiometric fluorescence sensing system. This configuration significantly enhanced detection sensitivity, achieving an improved limit of detection (LOD) at 0.330 μM (nearly 16.46 times smaller than the LOD of bare Eu-MOF). The developed sensing platform enabled non-invasive visual monitoring of NTP contaminants in real samples through smartphone-assisted analysis. This methodology presents an innovative approach for portable pesticide detection through ratiometric luminescent response.

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便携式铕- mof负载比荧光试纸的制备及灵敏度检测

新烟碱类杀虫剂Nitenpyram （NTP）在全球农业系统中广泛使用，对NTP的灵敏检测对于保障人类健康和食品安全至关重要。基于密度泛函理论（DFT），合理合成了铕基金属有机骨架（Eu-MOF）。该材料具有有效的NTP传感能力，检测限为5.431 μM。随后，将Eu-MOF固定在基于纸张的分析平台中，建立比率荧光传感系统。该结构显著提高了检测灵敏度，提高了检测限（LOD），达到0.330 μM（比裸Eu-MOF的LOD小近16.46倍）。开发的传感平台能够通过智能手机辅助分析对真实样品中的NTP污染物进行非侵入性视觉监测。该方法提出了一种利用比率发光响应进行便携式农药检测的创新方法。

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来源期刊

Microchemical Journal 化学-分析化学

CiteScore

8.70

自引率

8.30%

发文量

1131

审稿时长

1.9 months

期刊介绍： The Microchemical Journal is a peer reviewed journal devoted to all aspects and phases of analytical chemistry and chemical analysis. The Microchemical Journal publishes articles which are at the forefront of modern analytical chemistry and cover innovations in the techniques to the finest possible limits. This includes fundamental aspects, instrumentation, new developments, innovative and novel methods and applications including environmental and clinical field. Traditional classical analytical methods such as spectrophotometry and titrimetry as well as established instrumentation methods such as flame and graphite furnace atomic absorption spectrometry, gas chromatography, and modified glassy or carbon electrode electrochemical methods will be considered, provided they show significant improvements and novelty compared to the established methods.