甲胺磷
化学
氨基甲酸酯
检出限
乙酰胆碱酯酶
呋喃丹
交货地点
硫丹
杀虫剂
组合化学
色谱法
酶
生物化学
生物
农学
作者
Guangchun Song,Junjie Zhang,Huixian Huang,Xin Wang,Xiaoyun He,Yunbo Luo,Jin‐Cheng Li,Kunlun Huang,Nan Cheng
出处
期刊:Food Chemistry
[Elsevier]
日期:2022-09-01
卷期号:387: 132896-132896
被引量:25
标识
DOI:10.1016/j.foodchem.2022.132896
摘要
Rapid detection of pesticide residues based on enzyme mimics has recently attracted much interest. However, most nanozymes have low activity. Herein, a "single-atom Ce-N-C nanozyme" (SACe-N-C nanozyme) was rationally devised and verified to mimic peroxidase (POD-like) with superior activity. Based on its high POD-like activities and cascaded catalytic reactions with acetylcholinesterase (AChE), we constructed a bioactive paper for the detection of pesticide residues, which offered a portable approach to monitor fruits and vegetables within 30 min. More importantly, a 3D printed platform was integrated on the basis of SACe-N-C bioactive paper to achieve on-site portable testing of omethoate, methamidophos, carbofuran, and carbosulfan, showing limits of detection (LODs) of 55.83, 71.51, 81.81, and 74.98 ng/mL, respectively. The recovery rates were 84.09-104.68%. This study provided new insight into the design of novel single-atom nanozymes for cascaded catalytic detection and other rapid detection applications with high efficiency and low cost.
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