Table 6: Percentage recoveries of permethrin and cyfluthrin from spiked water samples.
Concentration range (ng l-1) | Permethrin recovery (%) | Cyfluthrin recovery (%) |
0.05-0.5 | 115.5 ± 7.3 (6) | 97.0 ± 10.4 (7) |
1.0-5.0 | 98.4 ± 13.1 (5) | 98.4 ± 21.6 (5) |
10-50 | 104.1 ± 16.5 (6) | 99.5 ± 6.6 (6) |
100-500 | 101.5 ± 17.5 (6) | 101.2 ± 14.0 (5) |