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| Samples | Added (μg L−1) | Found (μg L−1) | Recovery (%) | RSD (%) |
|---|---|---|---|---|
| Pond water | 0.0 | N.D.a | — | — |
| 0.4 | 0.409 | 102.3 | 2.36 | |
| 0.8 | 0.775 | 96.9 | 3.48 | |
| River water | 0.0 | N.D. | — | — |
| 0.4 | 0.412 | 103.0 | 3.36 | |
| 0.8 | 0.805 | 100.6 | 5.48 | |
| Polluted water | 0.0 | 1.06 | — | 4.46 |
| 0.4 | 1.44 | 95.0 | 4.58 | |
| 0.8 | 1.80 | 92.5 | 4.32 |
N.D. not detected.
