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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 |
