| Heavy metal Content | Stations | As | Cd | Cr | Cu | Pb | Ni | Zn |
| Trabzon Harbour | I | 2.8 - 3.5 | 0.07 - 0.16 | 9.2 - 16.2 | 5.8 - 7.1 | 4.7 - 7.2 | 9.3 - 20.1 | 4.6 - 5.4 |
| II | 2.7 - 6.2 | 0.11 - 0.23 | 12.8 - 20.1 | 10.5 - 14.8 | 6.4 - 55.1 | 11.4 - 54.2 | 20.3 - 30.0 | |
| III | 3.5 - 6.3 | 0.14 - 0.23 | 9.4 - 28.6 | 11.5 - 14.4 | 5.7 - 14.3 | 13.5 - 47.4 | 27.1 - 54.3 | |
| SQGs | As | Cd | Cr | Cu | Pb | Ni | Zn | |
| Canadian TEL PEL |
7.2 41.6 |
0.7 4.2 |
52.3 160 |
18.7 108 |
30.2 112 |
15.9 - |
124 271 | |
| Wiskonsin TEL PEL |
9.8 33 |
0.99 5.0 |
43 110 |
32 150 |
36 130 |
23 49 |
120 460 | |
| Flemish Target value Limit value |
20 100 |
2.5 7 |
60 220 |
20 100 |
70 350 |
70 280 |
160 500 | |