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Determination of Cr (VI) in real water samples.
| Sample | Added | Proposed method found | Recovery | RSD | AAS found |
|---|---|---|---|---|---|
| (μM) | (μM)a | (%) | (%) | (μM) | |
| Lake water | 0 | Not detected | - | - | 0.033b |
| 3.00 | 3.12 | 104 | 3.56 | 3.00 | |
| 12.0 | 11.7 | 97.6 | 2.22 | 11.9 | |
| 22.0 | 22.2 | 101 | 1.03 | 22.8 | |
| River water | 0 | Not detected | - | - | 0.073b |
| 3.00 | 2.90 | 96.7 | 2.32 | 3.00 | |
| 12.0 | 12.6 | 105 | 2.26 | 12.9 | |
| 22.0 | 23.2 | 105 | 2.65 | 21.7 |
a: average value of four measurements. b: the samples are determined by ICP-MS.
