The available data and evaluations show that the concentration of polybrominated diphenyl ethers (PBDEs) is high in biota (though less so in sediments) throughout the Baltic Sea. The status of the sum of PBDE congeners (28, 47, 99, 100, 153 and 154) in fish, during the period 2011 to 2016, shows that the threshold is exceeded at every monitoring site in the Baltic Sea, resulting in all fish monitoring areas being classified as 'not good status' (Key message figure 1). The core indicator threshold value is the EU Environmental Quality Standard (EQS) of 0.0085 µg kg-1 wet weight (ww) in fish. The threshold is considered to be very precautionary and is due for review by the EU Chemicals Working Group.
Concentrations of single PBDE congeners are declining, but the availability of long time series is limited in the Baltic Sea and concentrated to the western parts of the region.
The confidence of the indicator evaluation is high.
The indicator is applicable in the waters of all countries bordering the Baltic Sea.
Polybrominated diphenyl ethers (PBDEs) are toxic and persistent substances that bioaccumulate in the marine foodweb. Increasing concentrations of PBDEs were detected in the environment in past decades as their use as commercial flame retardants increased. The use of most PBDE products have been banned in Europe during the last 10 years, and as a result decreasing concentrations are detected for some of the PBDE congeners.
- D8C1 Within coastal and territorial waters and beyond territorial waters the concentrations of contaminants do not exceed the threshold value
D9 Contaminants in fish and other seafood
- D9C1 The level of contaminants in edible tissues (muscle, liver, roe, flesh or other soft parts, as appropriate) of seafood (including fish, crustaceans, molluscs, echinoderms, seaweed and other marine plants) caught or harvested in the wild (excluding fin-fish from mariculture) does not exceed the threshold value
HELCOM (2018). Polybrominated diphenyl ethers (PBDEs). HELCOM core indicator report. Online. [Date Viewed], [Web link]. ISSN 2343-2543
Polybrominated diphenyl ethers PBDEs HELCOM core indicator 2018 (pdf)