Table 1.
Measurements (mean ± SD) of 17β-estradiol (E2) and 4-t-Octylphenol (OP) determined in the water from the in vivo exposure experiment at different time points and in triplicate tanks. E2 measurements were calculated based on activity of extracts of water in the YES assay, whereas OP measurements were determined by HPLC. DW is distilled water control, SC is the solvent control. ND, not detected.
| OP (μg/L) |
E2 (ng/L) |
|||||||
|---|---|---|---|---|---|---|---|---|
| SC | 5 | 25 | DWC | SC | 10 | 100 | 1000 | |
| Week 3 | ND | 6.3 ± 0.4 | 28.9 ± 1.1 | ND | ND | 6.4 ± 0.5 | 84.7 ± 49.5 | 878 ± 234 |
| Week 6 | ND | 5.9 ± 0.4 | 22.3 ± 0.8 | ND | ND | 23.3 ± 6.3 | 145.3 ± 24.4 | 1070 ± 45.8 |
| Week 9 | ND | 5.4 ± 0.3 | 41.7 ± 4.3 | ND | ND | 7.4 ± 0.7 | 228.0 ± 21.0 | 1080 ± 17.3 |
| Week 10 | ND | 4.9 ± 0.3 | 20.1 ± 0.3 | |||||