Research Article
Residues, Distributions, Sources, and Ecological Risks of OCPs in the Water from Lake Chaohu, China
Table 2
The statistical characteristics of the log-transformed toxicity data for typical OCPs (
g/L).
| | p,p′-DDT | γ-HCH | Heptachlor | | Numbers | Mean | SD | Numbers | Mean | SD | Numbers | Mean | SD |
| All species | 151 | 1.782 | 1.148 | 122 | 2.323 | 1.068 | 48 | 2.08 | 1.11 | Vertebrates | 62 | 1.802 | 1.083 | 60 | 2.475 | 0.896 | 32 | 2.11 | 0.65 | Invertebrates | 89 | 1.769 | 1.196 | 62 | 2.175 | 1.201 | 16 | 1.79 | 0.93 | Fishes | 57 | 1.678 | 1.022 | 54 | 2.352 | 0.854 | 31 | 2.09 | 0.65 | Crustaceans | 28 | 1.496 | 1.127 | 20 | 2.048 | 1.151 | 8 | 1.67 | 0.48 | Insects and spiders | 50 | 1.516 | 0.939 | 28 | 1.509 | 0.663 | 6 | 1.48 | 1.14 |
| | Aldrin | Endrin | | | | | Numbers | Mean | SD | Numbers | Mean | SD | | | |
| All species | 55 | 2.08 | 1.11 | 83 | 83 | 83 | | | | Vertebrates | 31 | 1.72 | 0.66 | 46 | 46 | 46 | | | | Invertebrates | 24 | 2.54 | 1.39 | 37 | 37 | 37 | | | | Fishes | 29 | 1.64 | 0.58 | 40 | 40 | 40 | | | | Crustaceans | 13 | 2.59 | 1.71 | 10 | 10 | 10 | | | | Insects and spiders | 6 | 1.71 | 0.55 | 21 | 21 | 21 | | | |
|
|
SD = Standard deviation.
|