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Detection of Hg2+ in face cream samples (n = 3) and recovery test using standard addition techniques
| Cream sample | Measured Hg2+ concentration (mg/L ± SD) | Hg2+ added (mg/L) | Hg2+ found (mg/L) | % recovery |
|---|---|---|---|---|
| A | 0.71 ± 0.03 | 1 | 1.67 | 95.94 |
| 3 | 3.69 | 99.24 | ||
| 5 | 6.06 | 107.02 | ||
| B | 1.26 ± 0.10 | 1 | 2.22 | 95.94 |
| 3 | 4.29 | 100.89 | ||
| 5 | 6.83 | 111.37 | ||
| C | 2.91 ± 0.12 | 1 | 3.86 | 94.96 |
| 3 | 5.84 | 97.92 | ||
| 5 | 8.05 | 102.87 |
