Use of a smartphone for visual detection of melamine in milk based on Au@Carbon quantum dots nanocomposites

Gold [email protected] quantum dots nanocomposites ([email protected]) were designed for analyzing melamine in milk visually. Fluorescent emission of [email protected] enhanced with the increase of melamine concentration. A calibration curve (R2 = 0.9856) and fluorescence standard array were established for detection of melamine in the range of 1 μM–10 μM. Limit of quantification and limit of detection were 12 nM and 3.6 nM, respectively. The...