Table 3.
Absorbance of five standard synthesized samples of a 5 µg/L Cr(VI) at 540 nm.
| Samples run | Volume (mL) | Absorbance (540 nm) | Concentration (µg/L) |
|---|---|---|---|
| S1 | 1 | 0.068 | 0.5 |
| S2 | 2 | 0.119 | 1 |
| S3 | 5 | 0.241 | 2.5 |
| S4 | 7 | 0.33 | 3.5 |
| S5 | 10 | 0.462 | 5 |
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