Department of Physics, Faculty of Science, Kasetsart University, Chatuchak, Bangkok 10900, Thailand; Department of Applied Chemistry, National Chi Nan University, Puli, Nantou 545, Taiwan, ROC.
Electroanalysis and Bioelectrochemistry Lab, Department of Chemical Engineering and Biotechnology, National Taipei University of Technology, Taipei 106, Taiwan, ROC.
Food Chem. 2024 Jan 30;432:137221. doi: 10.1016/j.foodchem.2023.137221. Epub 2023 Aug 19.
In the booming global population, monitoring of mesotrione (MTN) like agricultural pollutants is crucial for human safety. Herein, the research reports the synthesis of tungsten trioxide (WO) and cobalt oxide (CoO) nanostructures intercalated ball milling exfoliated graphene (WO/CoO/graphene) 3D helix electrocatalyst for the electrochemical detection of MTN herbicide. The proposed WO/CoO/graphene sensor material achieved a wide range of MTN detection from 0.001 µM to 1885 µM. In addition, the estimated limit of sensing and sensitivity values are 0.42 nM and 0.802 µAµM cm respectively. The real sample experiment was accomplished in MTN-added vegetables (corn, sugar cane, tomato, green soybean) and environmental samples (sewage water, river water). At most, the recorded minimum MTN response recovery in vegetables and water samples is about 95% and 98% respectively. Furthermore, the designed sensor electrode achieved storage stability of 98.7% after three weeks.
在全球人口不断增长的背景下，监测像麦草畏（MTN）这样的农业污染物对人类安全至关重要。在此，研究报告了三氧化钨（WO）和氧化钴（CoO）纳米结构插层球磨剥离石墨烯（WO/CoO/石墨烯）3D 螺旋结构电催化剂的合成，用于电化学检测 MTN 除草剂。所提出的 WO/CoO/石墨烯传感器材料实现了 MTN 从 0.001µM 到 1885µM 的宽检测范围。此外，估计的传感极限和灵敏度值分别为 0.42nM 和 0.802µAµM cm。在添加 MTN 的蔬菜（玉米、甘蔗、番茄、青豆）和环境样本（污水、河水）中完成了实际样品实验。在蔬菜和水样中，记录到的最小 MTN 响应恢复值最高分别约为 95%和 98%。此外，设计的传感器电极在三周后仍保持 98.7%的存储稳定性。
