Table 3 Analysis of 1-naphthol in deionized and natural water; concentration factor is 2000, t (p > 0.95, n = 3) = 4.303
Type of the water | 1-Naphthol added (μg L−1) | 1-Naphthol found (μg L−1) | Mean recovery, % | RSD, % |
|---|---|---|---|---|
Deionized water | 100 | 99 ± 11 | 99.0 | 4.6 |
300* | 295 ± 8 | 98.2 | 2.6 | |
300* | 304 ± 13 | 101.3 | 4.0 | |
600 | 595 ± 31 | 99.2 | 2.1 | |
Lake water | – | 2.0 ± 6.6 | – | – |
100 | 98 ± 6 | 97.7 | 2.6 | |
Lake water (reference method [22]) | – | 2.2 ± 7.3 | – | – |
100 | 97 ± 12 | 97.2 | 5.0 |