Table 1.

Figures of merit for some of the previously reported CDs based Hg(II) fluorescence sensors.

Report	LOD	Linear Range	Modification
Li et al. [46]	7.0 ppb	0–0.2 ppm	Thymine
Huang et al. [47]	16.7 ppb	0–6.0 ppm	None
Haiyan et al. [48]	0.094 ppb	0–0.01 ppm	CdSe quantum dots
Yan et al. [49]	5.6 ppb	0–0.1 ppm	Gold nanoclusters
Ghaedi et al. [50]	93 ppb	0.16–5.7 ppm	PVC
Liu et. al [51]	4.0 ppb	0.01–1.0 ppm	PEG200
Yan et al. [52]	49 ppb	0.8–3.6 ppm	None
Sharma et al. [53]	20 ppb	0.2–3.6 ppm	None