Table 1.

Results of the measurement of Ag⁺ concentration in food packaging material.

Methods	Ag+ (mg/L)	Linear Range (μM)	Limit of Detection(LOD) (μM)	Relative Error (%)
N-CQDs detection method	1.442 (± 3.8 × 10−2)	0–10	1.19	6.24
		10–30	0.66
Chinese standard method GB 11907-89	1.352 (± 1.8 × 10−3)	0–30	0.49