Table 5.
Real sample analysis of Cr3+ in various environmental samples.
| Real Samples | Amount of 3-CP Added | No. of Readings | Measured Response in (µA) | % Recovery | Mean (% Recovery) | SD | RSD | SEM |
|---|---|---|---|---|---|---|---|---|
| Cr3+ | 0.1 µM, 25 µL | - | 13.6808 | 100 | - | - | - | - |
| Plastic baby feeding bottle | 0.1 µM, 25 µL | R1 | 13.2376 | 96.7 | 91.2 | 4.765 | 5.22 | 2.75 |
| R2 | 12.2129 | 89.3 | ||||||
| R3 | 12.0183 | 87.8 | ||||||
| Industrial effluent | 0.1 µM, 25.0 µL | R1 | 14.9859 | 109.5 | 106.7 | 3.143 | 2.95 | 1.81 |
| R2 | 14.6821 | 107.3 | ||||||
| R3 | 14.1258 | 103.3 | ||||||
| Sea water | 0.1 µM, 25.0 µL | R1 | 12.1036 | 88.5 | 88.1 | 1.833 | 2.08 | 1.05 |
| R2 | 11.7748 | 86.1 | ||||||
| R3 | 12.2757 | 89.7 | ||||||
| Tap water | 0.1 µM, 25.0 µL | R1 | 13.2457 | 96.8 | 97.9 | 1.850 | 1.89 | 1.06 |
| R2 | 13.6980 | 100.1 | ||||||
| R3 | 13.2682 | 97.0 |
SD = standard deviation; RSD = relative standard deviation; SEM = standard error of mean