Table 3.
Pesticide concentrations in surface water (ng/L) and bottom sediments (ng/g dry wet) from the Ramos Creek (mean ± standard deviation).
| Surface water | Bottom sediments | |
|---|---|---|
| Trifluralin | 0.0002 ± 0.00016 | 0.0002 ± 0.00001 |
| Chlorothalonil | 0.0033 ± 0.0015 | 0.00064 ± 0.00064 |
| Chlorpyriphos | 0.30 ± 0.14 | 0.74 ± 0.13 |
| α-HCH | 0.14 ± 0.07 | 0.05 ± 0.02 |
| γ-HCH | 0.08 ± 0.04 | <dl |
| ƩHCHs | 0.23 ± 0.04 | 0.05 ± 0.02 |
| Heptachlor | <dl | 0.09 ± 0.04 |
| Hept. epoxide | 0.07 ± 0.03 | <dl |
| ƩHeptachlors | 0.07 ± 0.03 | 0.09 ± 0.04 |
| γ-chlordane | 0.08 ± 0.04 | 0.07 ± 0.01 |
| α-chlordane | 0.03 ± 0.01 | <dl |
| ƩChlordanes | 0.11 ± 0.03 | 0.07 ± 0.01 |
| α-endosulfan | 3.71 ± 1.63 | 0.08 ± 0.01 |
| β-endosulfan | 0.36 ± 0.17 | <dl |
| ƩEndosulfans | 4.07 ± 2.37 | 0.08 ± 0.01 |
| pp´-DDE | 0.16 ± 0.08 | <dl |
| pp´-DDD | 0.35 ± 0.16 | <dl |
| ƩDDTs | 0.51 ± 0.13 | <dl |
dl: detection limit.