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Surface Plasmon Resonance Imaging Sensor for Detection of Photolytically and Photocatalytically Degraded Glyphosate

光催化 草甘膦 表面等离子共振 生物传感器 杀虫剂 化学 二氧化钛 降级(电信) 污染物 废水 生态毒性 环境化学 纳米技术 材料科学 环境科学 纳米颗粒 计算机科学 有机化学 环境工程 生物技术 催化作用 冶金 农学 生物 电信 毒性
作者
Martina Vráblová,Kateřina Smutná,Ivan Koutník,Tomáš Prostějovský,Radim Žebrák
出处
期刊:Sensors [Multidisciplinary Digital Publishing Institute]
卷期号:22 (23): 9217-9217 被引量:1
标识
DOI:10.3390/s22239217
摘要

Glyphosate is one of the most widely used pesticides, which, together with its primary metabolite aminomethylphosphonic acid, remains present in the environment. Many technologies have been developed to reduce glyphosate amounts in water. Among them, heterogeneous photocatalysis with titanium dioxide as a commonly used photocatalyst achieves high removal efficiency. Nevertheless, glyphosate is often converted to organic intermediates during its degradation. The detection of degraded glyphosate and emerging products is, therefore, an important element of research in terms of disposal methods. Attention is being paid to new sensors enabling the fast detection of glyphosate and its degradation products, which would allow the monitoring of its removal process in real time. The surface plasmon resonance imaging (SPRi) method is a promising technique for sensing emerging pollutants in water. The aim of this work was to design, create, and test an SPRi biosensor suitable for the detection of glyphosate during photolytic and photocatalytic experiments focused on its degradation. Cytochrome P450 and TiO2 were selected as the detection molecules. We developed a sensor for the detection of the target molecules with a low molecular weight for monitoring the process of glyphosate degradation, which could be applied in a flow-through arrangement and thus detect changes taking place in real-time. We believe that SPRi sensing could be widely used in the study of xenobiotic removal from surface water or wastewater.
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