荧光
检出限
三聚氰胺
肉眼
发光
微球
可视化
碳纤维
化学
纳米技术
甲醛
材料科学
分析化学(期刊)
色谱法
计算机科学
光电子学
化学工程
光学
有机化学
物理
人工智能
复合数
复合材料
工程类
作者
Wenhui Wang,Zhenquan Yang,Lixia Xiao,Jie Han,Tianzhu Guan,Xiaojuan Gong,Qin Hu
出处
期刊:Food Chemistry
[Elsevier]
日期:2023-12-01
卷期号:429: 136890-136890
被引量:1
标识
DOI:10.1016/j.foodchem.2023.136890
摘要
A paper-based assay for visualization of auramine O (AO) was for the first time established by using CFMs as a ratiometric fluorescent probe (RFP). The CFMs were melamine formaldehyde microspheres (MFMs) incorporated with carbon dots (CDs), where the CDs species as sensing units and MFMs as a signal amplification carrier. The proposed RFP can quantitatively measure AO content from 0.0 to 10.0 μM and exhibited an ultralow limit of detection (LOD, 15.7 nM). In particular, obvious luminescence color change of CFMs from blue to green was perceived with naked-eyes and therefore, a solution-based and a paper-based visualization platform were respectively proposed for on-site visual detection of AO with LODs of 1.15 μM and 0.83 μM, separately. Finally, those fluorescence methods were adopted in sensitively quantitative measurement of AO within various food and drug samples, providing new prospects for analysts and technical support in food quality monitoring.
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