Table 1.
Concentrations of NNIs in surface water (ng·L-1) and sediment (ng·g-1 dw) of the Harbin section of the Songhua River, China.
| IMI | THM | THA | IMIT | DIN | CLO | ACE | Σ7NNIs | |
|---|---|---|---|---|---|---|---|---|
| Surface water (n = 13) | ||||||||
| DF | 100% | 100% | 15.4% | 15.4% | 23.1% | 100% | 100% | 100% |
| GM | 16.9 | 28.4 | 0.69 | 0.03 | 1.69 | 2.75 | 0.85 | 52.3 |
| Median | 11.9 | 26.7 | ND | ND | ND | 2.11 | 0.51 | 41.4 |
| Mean | 22.4 | 30.7 | 0.80 | 0.03 | 2.89 | 3.42 | 1.94 | 62.3 |
| Range | 10.9–83.5 | 16.3–83.5 | ND-1.21 | ND-0.04 | ND-5.91 | 1.66–13.1 | 0.20–10.8 | 30.8–135 |
| Sediment (n = 11) | ||||||||
| DF | 100% | 100% | 0% | 0% | 0% | 100% | 9.09% | 100% |
| GM | 1.20 | 0.36 | ND | ND | ND | 0.11 | 0.75 | 1.76 |
| Median | 0.94 | 0.42 | ND | ND | ND | 0.11 | ND | 1.52 |
| Mean | 2.25 | 0.51 | ND | ND | ND | 0.12 | 0.75 | 3.63 |
| Range | 0.34–12.6 | 0.12–1.58 | ND | ND | ND | 0.07–0.22 | ND-0.75 | 0.61–14.7 |
DF: detection frequency; GM: geometric mean; ND: not detected; IMI: imidacloprid; THM: thiamethoxam; THA: thiacloprid; IMIT: imidaclothiz; DIN: dinotefuran; CLO: clothianidin; ACE: acetamiprid.