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)