Registration Dossier

Administrative data

Endpoint:
toxicity to other aquatic vertebrates
Type of information:
experimental study
Adequacy of study:
supporting study
Study period:
2013-2014
Reliability:
4 (not assignable)
Rationale for reliability incl. deficiencies:
documentation insufficient for assessment

Data source

Reference
Reference Type:
publication
Title:
Unnamed
Year:
2018
Report Date:
2018

Materials and methods

Principles of method if other than guideline:
Fifteen halogenated flame retardants (HFRs) including seven emerging brominated flame retardants (EBFRs) and eight dechlorane-related compounds (DRCs) were analyzed in eels (Anguilla anguilla) sampled from five Latvian lakes.
GLP compliance:
not specified

Test material

Reference
Name:
Unnamed

Sampling and analysis

Analytical monitoring:
yes
Details on sampling:
Fifty eight eel (Anguilla anguilla) specimens of various length and weight were caught in Latvian freshwater lakes during the period from September 2013 to May 2014. These locations were carefully selected to evenly cover all essential eel stocks in the Latvian territory and also to have a maximum variation in body weight and length. At least five eel specimens were collected to represent each sampling site.

Test organisms

Aquatic vertebrate type (other than fish):
other: Eels

Study design

Test type:
other: Environmental sampling

Results and discussion

Applicant's summary and conclusion

Conclusions:
Fifteen halogenated flame retardants (HFRs) including seven emerging brominated flame retardants (EBFRs) and eight dechlorane-related compounds (DRCs) were analyzed in eels (Anguilla anguilla) sampled from five Latvian lakes. Out of the seven EBFRs, hexabromocyclododecane (HBCD) and decabromodiphenyl ethane (DBDPE) were found in eels in quantifiable concentrations, up to 6.58 and 33.0 ng g 1 lipid weight (l.w.), respectively. The determined concentrations of HFRs were lower than in other studies of aquatic biota from Europe and Asia, and the obtained results reflect the acceptable environmental status of Latvian lakes with regard to the total content of HBCD (PHBCD), considering the environmental quality standards (EQS) stated in the Directive 2013/39/EU. The highest PHBCD levels were observed in eels from lakes corresponding to the industrialization of those areas, while the results of principal component analysis (PCA) showed that the concentrations of HBCD depended on the particular sampling lake, reflecting non-uniform contamination of the Latvian environment with this EBFR.

Executive summary:

Fifteen halogenated flame retardants (HFRs) including seven emerging brominated flame retardants (EBFRs) and eight dechlorane-related compounds (DRCs) were analyzed in eels (Anguilla anguilla) sampled from five Latvian lakes. Out of the seven EBFRs, hexabromocyclododecane (HBCD) and decabromodiphenyl ethane (DBDPE) were found in eels in quantifiable concentrations, up to 6.58 and 33.0 ng g 1 lipid weight (l.w.), respectively. The determined concentrations of HFRs were lower than in other studies of aquatic biota from Europe and Asia, and the obtained results reflect the acceptable environmental status of Latvian lakes with regard to the total content of HBCD (PHBCD), considering the environmental quality standards (EQS) stated in the Directive 2013/39/EU. The highest PHBCD levels were observed in eels from lakes corresponding to the industrialization of those areas, while the results of principal component analysis (PCA) showed that the concentrations of HBCD depended on the particular sampling lake, reflecting non-uniform contamination of the Latvian environment with this EBFR.