Table 3.
Comparison between environmental quality standards and metal concentrations (mg kg−1 DW) in the present study.
| Cr | Cu | Zn | Cd | Pb | |
|---|---|---|---|---|---|
|
| |||||
| Sediment | |||||
| Min | 12.30 | 2.92 | 12.51 | 0.08 | 3.60 |
| Max | 1462.40 | 45.20 | 174.20 | 0.81 | 39.90 |
| Median | 71.11 | 11.08 | 59.32 | 0.35 | 19.76 |
| Mean | 133.56 | 15.84 | 64.43 | 0.36 | 18.99 |
| SE | 34.50 | 1.41 | 4.03 | 0.02 | 1.33 |
| Sediment quality guidelines (SQGs) | |||||
| TEL | 52.3 | 18.7 | 124 | 0.7 | 30.2 |
| PEL | 160 | 108 | 271 | 4.2 | 112 |
| ERL | 81 | 34 | 150 | 1.2 | 46.7 |
| ERM | 370 | 270 | 410 | 9.6 | 218 |
| Compared with TEL and PEL | |||||
| <TEL (%) | 40 | 55 | 95 | 95 | 85 |
| Between TEL–PEL (%) | 40 | 45 | 5 | 5 | 15 |
| >PEL (%) | 20 | 0 | 0 | 0 | 0 |
| Compared with ERL and ERM | |||||
| <ERL (%) | 65 | 95 | 100 | 100 | 100 |
| Between ELM–ERM (%) | 30 | 5 | 0 | 0 | 0 |
| >ERM (%) | 5 | 0 | 0 | 0 | 0 |
|
| |||||
| Water | |||||
| Min | 0.08 | 0.23 | 1.1 | 0.03 | 0.09 |
| Max | 2.01 | 2.59 | 52.53 | 0.41 | 0.83 |
| Mean | 0.51 | 1.21 | 7.2 | 0.12 | 0.29 |
| SE | 0.08 | 0.1 | 1.12 | 0.01 | 0.06 |
| CCC | 50 | 3.1 | 81 | 7.9 | 8.1 |
| CMC | 1100 | 4.8 | 90 | 33 | 210 |
| Compared with CCC and CMC | |||||
| <CCC (%) | 100 | 100 | 100 | 100 | 100 |
| Between CCC and CMC | 0 | 0 | 0 | 0 | 0 |
| >CMC (%) | 0 | 0 | 0 | 0 | 0 |
Data sources: TEL and PEL: Canadian Sediment Quality Guidelines for the Protection of Aquatic Life (Canadian Council of Ministers of the Environment, 2002); ERL and ERM: Long et al. (1995); NC and MPC: Environmental Quality Standards (EQS) in The Netherlands (Crommentuijn et al., 2000); CCC and CMC: National Recommended Water Quality Criteria - Aquatic Life Criteria Table (U.S. Environmental Protection Agency, 2022).