Table 2.
Average results on the concentration of chlorpyrifos (CPF) and cypermethrin (CYP) in the water (µg/L) and fish organs (µg/g wet weight) measured at the 96th hour (mean value ± standard deviation), as well as the calculated bioconcentration factor (BCF).
| Total Concentration of CPF, µg (for 50 L Tanks) | ||||
| Control | 1.5 | 2.5 | 5 | |
| Water | n.d. | 0.76 ± 0.25 c | 1.69 ± 0.19 b | 2.76 ± 0.17 a |
| Gills | n.d. | 0.202 ± 0.03 b | 0.21 ± 0.03 b | 0.276 ± 0.61 a |
| Liver | n.d. | 0.184 ± 0.03 b | 0.19 ± 0.02 b | 0.27 ± 0.06 a |
| BCF, gills | - | 3.76 * | 8.05 * | 10 * |
| BCF, liver | - | 4.1 * | 8.9 * | 10.2 * |
| Total Concentration of CYP, µg (for 50 L Tanks) | ||||
| Control | 0.01 | 0.015 | 0.03 | |
| Water | n.d. | 0.0009 ± 0.0002 c | 0.008 ± 0.001 b | 0.017 ± 0.004 a |
| Gills | n.d. | 0.063 ± 0.02 a | 0.878 ± 0.025 a | 0.092 ± 0.034 a |
| Liver | n.d. | 0.055 ± 0.02 b | 0.079 ± 0.029 a,b | 0.084 ± 0.025 a |
| BCF, gills | - | 0.14 | 0.009 | 1.85 |
| BCF, liver | - | 0.02 | 0.1 | 2.02 * |
a,b,c The values with different letters in the same row are significantly different (Tukey’s test, p < 0.05). n.d.: not detectable. The limits of quantitation (LoQ) for CPF in water and fish were set at 0.005 µg/L and 0.15 µg/g and for CYP at 0.0002 µg/L and 0.009 µg/g wet weight, respectively. *—BCF > 2.