Data from: Graphene quantum dots as nanoprobes for fluorescent detection of propofol in emulsions

We report a new fluorescent detection method for propofol based on
graphene quantum dots (GQDs). Citric acid (CA) was selected as the carbon
precursor, and fluorescent GQDs were prepared by carbonizing CA. The
product, which efficiently quenched the fluorescence of GQDs, could be
obtained through the oxidation of propofol in the presence of horseradish
peroxidase (HRP) and hydrogen peroxide (H2O2). The fluorescence intensity
ratio of GQDs (F/F0) was positively correlated with the concentration of
propofol, which ranged within 5.34–89.07 mg L-1, the limit of detection
(LOD) was 0.5 mg L-1, the limit of quantity (LOQ) was 5.34 mg L-1. The
developed fluorescence method reported in the present study is simple,
sensitive, reproducible, and can serve in determining propofol contents in
emulsions.