Table 2 Mean sediment concentrations of pollutants in the Bornholm Deep14 with estimations of their resuspended tonnage, EQS and relative mixture toxicity contributions.
From: Environmental impact of the explosion of the Nord Stream pipelines
Compound | Mean concentration in Bornholm deep sediments [µg/kg] | Resuspended pollutant mass [Kg] | EQS [µg/L] | Toxic contributions [%] |
---|---|---|---|---|
Organics | ||||
PBDE | 0.31 | < 0.1 | 0.0049 | 0.04 |
HBCD | 0.92 | 0.2 | 0.0008 | 0.67 |
Anthracene | 6.3 | 1.6 | 0.1 | 0.04 |
Metals | ||||
Hg | 60 | 15 | 0.05 | 0.7 |
MeHg | 0.375 | < 0.1 | 0.0065 | 0.03 |
Cd | 1140 | 285 | 0.2 | 3.3 |
Pb | 57,700 | 14,425 | 1.3 | 25.9 |
Cs-137 | 77 Bq/kg | NA | 0.015 Bq/L | 3.0 |
Cr | 14,700 | 3675 | 3.4 | 2.5 |
Cu | 15,500 | 3875 | 1 | 9.0 |
Zn | 14,600 | 3650 | 7.8 | 1.1 |
Ni | 4000 | 1000 | 8.6 | 0.3 |
As | 1800 | 450 | 0.6 | 1.8 |
TBT | 17.7 | 4.4 | 0.0002 | 51.6 |
Chemical warfare agents | ||||
Sum As based | 129.2 | 32.3 | 0.6 | 0.1 |
Sum mustard gas related | 9.2 | 2.3 | 830 | 0.00001 |