Recovery of Cr(vi) in Changqing lake water sample (n = 3).
| Sample | Added Cr(vi) (μM) | Detected Cr(vi) (μM) | Recovery (%) | RSD (%) |
|---|---|---|---|---|
| 1 | 0.5 | 0.53 ± 0.04 | 106 ± 8 | 0.38 |
| 2 | 5 | 4.92 ± 0.16 | 98.4 ± 3.2 | 0.47 |
| 3 | 10 | 9.87 ±0.21 | 98.7 ± 2.1 | 1.72 |
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