Related Experiment Video
Updated: Jan 23, 2026

Microfluidic Platform with Multiplexed Electronic Detection for Spatial Tracking of Particles
Published on: March 13, 2017
One-Click Egg Safety Check: A Syringe-Integrated Portable Platform for On-Site Fluoroquinolone Residue Detection
Yingying Feng1, Wanqi Jiang1, Wenya Liu1
1Key Laboratory of Jianghuai Agricultural Product Fine Processing and Resource Utilization of Ministry of Agriculture and Rural Affairs, College of Food and Nutrition, Anhui Agricultural University, Hefei 230036, China.
Abstract:
A portable integrated sensing device incorporating a Tb3+/DTE-Cu NC ratiometric fluorescent probe was developed for the rapid on-site detection of fluoroquinolone (FQ) residues in poultry eggs. The system features a dual-layer filtration unit, consisting of glass wool and a polyvinyl alcohol/sodium alginate hydrogel, which purifies egg samples in situ through combined physical interception and chemical adsorption. The Tb3+/DTE-Cu NC probe was immobilized within the hydrogel matrix, enabling full integration of the entire "sample introduction-filtration-detection" process. Under 365 nm UV light, fluorescence emission shifts from red to green as the FQ concentration increases. Quantitative analysis is accomplished by extracting the G/R ratio from smartphone-captured RGB values. The device achieves a detection limit of 1.6 nM, with recoveries for spiked egg samples ranging from 91% to 112%. This low-cost, rapid, and instrument-free platform presents a practical solution for the sensitive on-site monitoring of antibiotic residues in food safety applications.
Related Concept Videos
Residual Stresses
Residual Plots
When the residual values are plotted against the variable x, it is called a residual...
Survey Safety
Protein Folding Quality Check in the RER
Residual Stresses in Circular Shafts
Residual Stresses in Bending

