孔雀绿
荧光
化学
检出限
RGB颜色模型
自来水
信号(编程语言)
生物系统
计算机科学
人工智能
色谱法
光学
环境科学
物理
有机化学
吸附
生物
程序设计语言
环境工程
作者
Lianshuang Jiang,Chenghui Li,Xiandeng Hou
出处
期刊:Talanta
[Elsevier]
日期:2024-07-01
卷期号:274: 126039-126039
标识
DOI:10.1016/j.talanta.2024.126039
摘要
The development of intelligent, sensitive, and visual methods for the rapid detection of veterinary drug residues is essential to ensure food quality and safety. Here, a smartphone-based dual inverse signal MOFs fluorescence sensing system was proposed for intelligent in-site visual detection of malachite green (MG). A UiO-66-NH2@RhB-dual-emission fluorescent probe was successfully synthesized in one step using a simple one-pot method. The inner filter effect (IFE) quenches the red fluorescence, while hydrogen bonding interaction enhances the blue fluorescence, enabling highly sensitive, accurate, and visual detection of MG dual inverse signals through fluorescence analysis. The probe showed great linearity over a wide range of 0.1–100 μmol/L, with a limit of detection (LOD) of 20 nmol/L. By integrating smartphone photography and RGB (red, green, and blue) analysis, accurate quantitative analysis of MG in water and actual fish samples can be achieved within 5 min. This developed platform holds great promise for the on-site detection of MG in practical applications, with the advantages of simplicity, cost-effectiveness, and rapidity. Consequently, it may open up a new pathway for on-site evaluation of food safety and environmental health.
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