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Table 1 List of priority substances and EQSs for fish as µg kg−1 wet weight (ww) according to Directive 2013/39/EU [2]. The last column lists the protection goals on which the EQS is based [3]

From: Selection and application of trophic magnification factors for priority substances to normalize freshwater fish monitoring data under the European Water Framework Directive: a case study

Substance EQS for fish
[µg kg−1 ww]
Protection goal
Polybrominated diphenyl ethers (PBDE; sum of congeners BDE 28, 47, 99, 100, 153, 154)§ 0.0085 Human health
Hexachlorobenzene (HCB) 10 Human health
Perfluorooctane sulfonate (PFOS) and derivatives 9.1 Human health
Dioxins and dioxin-like compounds (PCDD/F + dl-PCB)§ 0.0065$
(as WHO2005-TEQ)#
Human health
Heptachlor and heptachlor epoxide (sum) 0.0067 Human health
Hexachlorobutadiene (HCBD) 55 Secondary poisoning
Hexabromocyclododecane (HBCDD; sum of α-, β- and γ-HBCDD)§ 167 Secondary poisoning
Dicofol 33 Secondary poisoning
Mercury (Hg) 20 Secondary poisoning
  1. # Expressed as WHO toxicity equivalents (TEQ) according to Van den Berg et al. [5]
  2. §Groups of chemicals consisting of several congeners or diastereomers (details are provided as Additional file 1: section “List of compounds covered in the substance groups”)
  3. $EQS also applicable for mollusks, crustaceans