Table 2.
Comparison of LOD of ZnS@β-CD NPs with published colorimetric sensors for detecting Pb2⁺, Cu2⁺, and Hg2⁺ metal ions.
Quantitaive method | Metal ion | Sensor | LOD | References |
---|---|---|---|---|
AuNP | 1.8 μM | 51 | ||
AuNP | 2.5 μM | 52 | ||
Pb2⁺ | AgNP | 1 μM | 53 | |
ZnS NP | 1 μM | 21 | ||
ZNS NP | 1 μM | Proposed method | ||
Colorimetry | ZnS NP | 1.24 μM | 54 | |
AuNP | 0.5 μM | 55 | ||
Cu2⁺ | AgNP | 2.9 μM | 56 | |
ZnS NP | 10 μM | 21 | ||
ZnS NP | 10 μM | Proposed method | ||
AuNP | 3 μM | 52 | ||
AgNP | 11.17 μM | 53 | ||
Hg2⁺ | CdSe/ZnS QD | 0.09 μM | 57 | |
ZnS NP | 1 μM | 21 | ||
ZnS NP | 1 μM | Proposed method |