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Concentration of Pb2+ in environmental samples detection by the digital PCR-based detection system.
| Sample | Pb2+ spiked (nM) | Pb2+ measured (nM) | Recovery (%) | RSD (%) |
|---|---|---|---|---|
| 1 | 1 | 1.05 | 105.0 | 4.8 |
| 2 | 5 | 5.08 | 103.6 | 3.9 |
| 3 | 10 | 10.15 | 102.7 | 3.5 |
| 4 | 50 | 48.10 | 96.2 | 4.4 |
