Samples | Original Chromium conc. in sample (mg/L) | Amount of Chromium added (mg/L) | % Recovery | Residual Chromium conc. in sample (mg/L) |
1 | 0.067 | - | 82.00 | 0.012 |
2 | 0.043 | - | 76.74 | 0.010 |
3 | 0.067 | 10 | 92.15 | 0.790 |
4 | 0.043 | 10 | 92.03 | 0.800 |