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Hg(II) ion concentrations found in tap water samples using the standard addition method, and the recoveries and relative standard deviations (RSDs) of the Hg(II) added.
| Sample | Detected (nM) | Added (nM) | Found (nM) | Recovery (%) | RSD (%) |
|---|---|---|---|---|---|
| Tap water | Not detected | 50 | 48.5 | 97 | 2.3 |
| Not detected | 100 | 103 | 103 | 2.2 | |
| Not detected | 150 | 153 | 102 | 2.5 |
