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Summary of analytical parameter.
| Parameter | Value |
|
|---|---|---|
| Cr(III) | Cr(VI) | |
| Concentration range (μg.L−1) | 50–500 | 50–500 |
| Correlation coefficient | 0.9926 | 0.9975 |
| Sensitivity (μg.L−1) | 14.7 | 14.7 |
| Repeatability (%) | 1.8 | 0.6 |
| Limit detection (μg.L−1) | 2.8 | 2.4 |
| EF | 10 | 10 |
| CE (hour−1) | 12 | 12 |
| CI (mL) | 12 | 12 |
| Accuracy (%) | 98.8 | 100.7 |
