Real-time detection of organophosphorus pesticides in water using an unmanned boat-borne Raman spectrometer†

IF 3.3 3区化学 Q2 CHEMISTRY, ANALYTICAL Analyst Pub Date : 2025-02-03 DOI:10.1039/D4AN01587H

Chen Zhang, Jiahui Zhu, Wenqi Ye, Xiaohong Liu, Ruishuang Zhuo, Chi Wang, Hong Liu and Wei Zhang

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Abstract

Organophosphorus pesticides (OPs) have been widely used in agricultural production. However, their potential harm to human health and the environment cannot be ignored. On-site detection of OPs in water is valuable for pollution source tracing and early warning of environmental pollution. We design an unmanned boat detection system equipped with a Raman spectrometer, which can achieve automated sampling and real-time detection of OPs in water. The unmanned boat detection system integrates automatic sampling, chemical reaction, spectral detection, and signal transmission modules. This method can specifically detect OPs in water by utilizing the inhibition effect of OPs on acetylcholinesterase activity. The minimum detection concentration is 700 nM for parathion-methyl. This method shows good anti-interference ability for other kinds of pesticides, demonstrating its applicability for rapid detection of OPs under complex water environmental conditions. Our strategy provides an efficient solution for real-time and flexible monitoring of OPs in water environments.

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无人船载拉曼光谱仪实时检测水中有机磷农药

有机磷农药在农业生产中得到了广泛应用。然而，它们对人类健康和环境的潜在危害不容忽视。水体中有机磷化合物的现场检测对污染源溯源和环境污染预警具有重要意义。我们在此设计了一种配备拉曼光谱仪的无人船探测系统，可以实现对水中OPs的自动采样和实时探测。无人船检测系统集成了自动采样、化学反应、光谱检测、信号传输等模块。该方法利用OPs对乙酰胆碱酯酶活性的抑制作用，对水中的OPs农药进行特异性检测。甲基对硫磷的最低检测浓度为700 nM。该方法对其他种类农药具有良好的抗干扰能力，适用于复杂水环境条件下OPs的快速检测。我们的策略为水环境中实时、灵活的OPs监测提供了有效的解决方案。

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