Table 5. Ecological risk calculated for individual PAHs in the surface sediment of different station.
| Stations | Nap | Acy | Ace | Flr | Phn | Ant | Fla | Pyr | BeA | Chy | BbF | BkF | BaP | DibA | BghiP | PELq | P |
| 1 | 0.00 | 0.00 | 0.02 | 0.23 | 0.08 | 0.36 | 0.00 | 0.41 | 0.8 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.09 | 0.92 |
| 2 | 0.00 | 0.00 | 0.00 | 0.07 | 0.02 | 0.05 | 0.00 | 0.09 | 0.05 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.02 | 0,77 |
| 3 | 0.00 | 0.00 | 0.06 | 0.82 | 0.16 | 0.24 | 0.03 | 0.04 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.09 | 0,83 |
| 4 | 0.00 | 0.00 | 0.00 | 0.01 | 0.02 | 0.24 | 0.01 | 0.01 | 0.10 | 0.06 | 0.45 | 0.00 | 1.96 | 1.41 | 0.00 | 0.28 | 1,56 |
| 5 | 0.00 | 0.00 | 0.00 | 0.12 | 0.02 | 0.05 | 0.01 | 0.14 | 0.00 | 0.00 | 0.01 | 0.00 | 0.00 | 0.00 | 0.00 | 0.02 | 0,79 |
| 6 | 0.01 | 0.00 | 0.00 | 0.40 | 0.07 | 0.15 | 0.02 | 0.02 | 0.26 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.06 | 0,83 |
| 7 | 0.00 | 0.00 | 0.00 | 0.19 | 0.23 | 1.09 | 0.01 | 0.01 | 0.29 | 0.00 | 0.00 | 0.03 | 0.00 | 0.00 | 0.00 | 0.12 | 1.02 |
| 8 | 0.01 | 0.00 | 0.01 | 0.27 | 0.01 | 0.29 | 0.01 | 0.01 | 0.07 | 0.00 | 0.00 | 0.00 | 0.16 | 0.00 | 0.04 | 0.06 | 0,85 |
| 9 | 0.00 | 0.00 | 0.00 | 0.05 | 0.01 | 0.03 | 0.00 | 0.02 | 0.28 | 0.23 | 0.00 | 0.00 | 0.00 | 0.50 | 0.00 | 0.08 | 0,86 |
| 10 | 0.00 | 0.00 | 0.00 | 0.16 | 0.01 | 0.04 | 0.00 | 0.17 | 0.40 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.05 | 0,90 |
| 11 | 0.00 | 0.00 | 0.01 | 0.34 | 0.03 | 0.15 | 0.01 | 0.02 | 0.04 | 0.00 | 0.00 | 0.23 | 0.00 | 0.00 | 0.00 | 0.06 | 0,87 |
| 12 | 0.01 | 0.00 | 0.01 | 0.28 | 0.05 | 0.95 | 0.01 | 0.24 | 1.12 | 0.00 | 0.00 | 0.00 | 0.00 | 0.05 | 0.00 | 0.18 | 1,14 |
| 13 | 0.04 | 7.26 | 0.12 | 4.31 | 0.41 | 1.26 | 0.11 | 0.17 | 0.56 | 0.00 | 0.01 | 0.02 | 1.08 | 0.00 | 0.03 | 1.03 | 2.03 |
| 14 | 0.01 | 0.00 | 0.00 | 0.23 | 0.14 | 0.74 | 0.01 | 0.01 | 0.21 | 0.00 | 0.01 | 0.00 | 0.08 | 0.00 | 0.00 | 0.10 | 0,88 |
| 15 | 0.01 | 0.00 | 0.00 | 0.06 | 0.02 | 0.02 | 0.00 | 0.00 | 0.11 | 0.00 | 0.01 | 0.00 | 0.00 | 0.96 | 0.00 | 0.08 | 0,89 |
| 16 | 0.28 | 0.00 | 0.01 | 0.84 | 0.12 | 0.41 | 0.06 | 0.07 | 1.41 | 0.14 | 0.00 | 0.00 | 1.07 | 0.00 | 0.00 | 0.30 | 1,42 |
| 17 | 0.02 | 0.00 | 0.03 | 1.57 | 0.17 | 2.45 | 0.00 | 0.16 | 2.15 | 0.65 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.48 | 1,57 |
| 18 | 0.00 | 0.00 | 0.00 | 0.14 | 0.02 | 0.05 | 0.00 | 0.09 | 0.28 | 0.00 | 0.20 | 0.00 | 0.00 | 0.00 | 0.00 | 0.05 | 0,93 |
| 19 | 0.01 | 0.00 | 0.00 | 0.25 | 0.07 | 0.14 | 0.01 | 0.01 | 0.39 | 0.00 | 0.01 | 0.00 | 0.14 | 0.00 | 0.00 | 0.07 | 0,87 |
| 20 | 0.01 | 0.00 | 0.00 | 0.26 | 0.07 | 0.12 | 0.01 | 0.01 | 0.33 | 0.00 | 0.00 | 0.00 | 0.12 | 0.00 | 0.00 | 0.06 | 0,85 |
| 21 | 0.01 | 0.00 | 0.00 | 0.25 | 0.03 | 0.07 | 0.01 | 0.01 | 0.26 | 0.00 | 0.01 | 0.00 | 0.00 | 0.96 | 0.00 | 0.09 | 0.86 |
| 22 | 0.00 | 0.00 | 0.00 | 0.09 | 0.00 | 0.02 | 0.00 | 0.00 | 0.08 | 0.00 | 0.01 | 0.00 | 0.00 | 0.00 | 0.00 | 0.01 | 0,74 |
| Mean | 0.02 | 0.33 | 0.01 | 0.50 | 0.08 | 0.41 | 0.01 | 0.08 | 0.42 | 0.05 | 0.03 | 0.01 | 0.21 | 0.18 | 0.00 | 0.16 | 1,01 |
*Nemerow pollution index (P).
*The PEL quotient (PELq).