Table 2 Arithmetic means and standard deviations for chemical parameters
From: Contaminant levels in the European eel (Anguilla anguilla) in North Rhine-Westphalian rivers
n a | Σ PCDD/PCDF (pg WHO2005TEQ/g) | Σ PCDD/PCDF + dl-PCB (pg WHO2005TEQ/g) | Indicator PCB (ng/g) | HCB (μg/kg) | Σ PBDE (μg/kg) | PFOS (μg/kg) | Hg (mg/kg) | |
|---|---|---|---|---|---|---|---|---|
Rhein Bonn | 9/9 | 1.8 ± 0.7 | 17.0 ± 5.9 | 253 ± 81 | 23.2 ± 14.7 | 18.4 ± 5.6 | 22.9 ± 9.8 | 0.210 ± 0.116 |
Rhein Düsseldorf | 7/11 | 1.2 ± 0.7 | 19.4 ± 7.9 | 382 ± 152 | 27.8 ± 11.9 | 20.7 ± 9.9 | 27.5 ± 23.6 | 0.165 ± 0.057 |
Rhein Rees | 9/9 | 4.7 ± 1.8 | 39.4 ± 12.9 | 698 ± 269 | 35.7 ± 12.8 | 74.6 ± 30.7 | 13.7 ± 9.9 | 0.273 ± 0.058 |
Rhein Emmerich | 11/11 | 5.4 ± 2.3 | 44.7 ± 17.8 | 982 ± 302 | 50.2 ± 25.2 | 76.2 ± 28.2 | 35.8 ± 17.9 | 0.195 ± 0.059 |
Sieg | 9/10 | 0.5 ± 0.3 | 6.3 ± 2.8 | 165 ± 60 | 3.4 ± 1.7 | 9.2 ± 4.0 | 13.4 ± 2.9 | 0.069 ± 0.021 |
Wupper | 9/10 | 0.8 ± 0.3 | 14.7 ± 3.0 | 369 ± 88 | 18.5 ± 6.1 | 14.3 ± 3.4 | 30.6 ± 16.9 | 0.314 ± 0.131 |
Ruhr | 8/9 | 2.2 ± 1.2 | 32.2 ± 16.6 | 800 ± 318 | 17.1 ± 6.5 | 23.1 ± 12.8 | 32.0 ± 14.3 | 0.077 ± 0.024 |
Erft | 9/10 | 1.5 ± 0.8 | 14.5 ± 6.2 | 301 ± 93 | 11.6 ± 7.1 | 13.6 ± 6.6 | 14.6 ± 7.1 | 0.075 ± 0.070 |
Lippe | 9/9 | 1.1 ± 0.5 | 25.2 ± 22.4 | 507 ± 544 | 19.3 ± 8.2 | 241.9 ± 143.7 | 15.6 ± 6.7 | 0.146 ± 0.061 |
Niers | 5/5 | 2.2 ± 0.5 | 28.6 ± 6.0 | 643 ± 197 | 11.6 ± 2.2 | 14.1 ± 4.4 | 49.0 ± 12.5 | 0.080 ± 0.018 |
Schwalm | 8/8 | 1.00 ± 0.4 | 12.3 ± 4.0 | 216 ± 75 | 8.8 ± 3.1 | 8.5 ± 2.5 | 16.9 ± 7.0 | 0.106 ± 0.039 |
Rur | 10/10 | 2.1 ± 1.2 | 39.6 ± 26.4 | 1,630 ± 762 | 12.1 ± 4.8 | 53.4 ± 30.4 | 42.3 ± 32.5 | 0.124 ± 0.030 |
Berkel | 7/8 | 1.2 ± 1.3 | 15.8 ± 10.2 | 357 ± 377 | 6.2 ± 4.3 | 20.8 ± 22.6 | 8.3 ± 3.0 | 0.145 ± 0.067 |