Table 1.

Comparison of previously reported fluorescent methods for ascorbic acid detection with the present method.

Material	Analytical Range (μmol·L−1)	Detection Limit (μmol·L−1)	Reference
PNCQDs/Cr6+	5.0–200	1.35	[31]
N,S-CDs/Fe3+	10–200	4.69	[32]
CDs/Cu2+	100–2800	60	[33]
CDs-SiO2/Fe3+	0–70	3.17	[34]
Mn-CDs	3–140	0.9	[35]
CDs/Fe3+	5–350	3.11	This work