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| Sample | Initially found (nM) | Spiked amount (nM) | Found amount (nM) | Recovery (%) | RSD (%) |
|---|---|---|---|---|---|
| Drinking water 1 | 0.0 | 0.05 | 0.049 ± 0.002 | 98.0 | 2.3 |
| Drinking water 2 | 0.0 | 0.05 | 0.047 ± 0.005 | 95.0 | 2.2 |
| Tap water 1 | 0.0 | 0.05 | 0.048 ± 0.002 | 96.0 | 3.0 |
| Tap water 2 | 0.0 | 0.05 | 0.048 ± 0.002 | 96.0 | 2.8 |
| Spring water 1 | 0.0 | 0.05 | 0.049 ± 0.003 | 98.0 | 3.2 |
| Spring water 2 | 0.0 | 0.05 | 0.048 ± 0.001 | 96.0 | 1.3 |
