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Ecotoxicological information

Sediment toxicity

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Administrative data

Endpoint:
sediment toxicity: long-term
Type of information:
experimental study
Adequacy of study:
key study
Reliability:
1 (reliable without restriction)
Rationale for reliability incl. deficiencies:
other: Study performed according to international guidelines and good laboratory practices by an experienced contract laboratory.

Data source

Referenceopen allclose all

Reference Type:
study report
Title:
Unnamed
Year:
2001
Reference Type:
publication
Title:
Unnamed
Year:
2002

Materials and methods

Test guidelineopen allclose all
Qualifier:
according to
Guideline:
ASTM E1706 (Sediment Toxicity Test (Media: Sediment-freshwater))
Version / remarks:
95b
Deviations:
no
Qualifier:
according to
Guideline:
EPA OPPTS 850.1735 (Whole Sediment Acute Toxicity of Invertebrates, freshwater)
Deviations:
no
GLP compliance:
yes

Test material

Reference
Name:
Unnamed
Type:
Constituent
Details on test material:
Composite of equal porporations of the commercial DecaBDE products of Albemarle Corporation, Great Lakes chemical Corporation, and ICL, Ltd.

Sampling and analysis

Analytical monitoring:
yes

Test substrate

Vehicle:
no

Test organisms

Test organisms (species):
Lumbriculus variegatus

Study design

Study type:
laboratory study
Test type:
flow-through
Water media type:
freshwater
Limit test:
no
Exposure duration
Duration:
28 d
Exposure phase:
total exposure duration

Test conditions

Test temperature:
23 +- 2 degrees C
pH:
7.7 to 8.6
Dissolved oxygen:
>=36% of saturation throughout the test
Salinity:
not applicable
Ammonia:
not reported
Nominal and measured concentrations:
Nominal sediment concentrations: 0, 313, 625, 1250, 2500, 5000 mg/kg dry weight sediment
Reference substance (positive control):
no

Results and discussion

Effect concentrations
Duration:
28 d
Dose descriptor:
NOEC
Effect conc.:
5 000 mg/kg sediment dw
Nominal / measured:
nominal
Conc. based on:
test mat.
Basis for effect:
other: survival/reproduction and growth rate
Remarks on result:
other: 2% TOC sediment

Applicant's summary and conclusion

Validity criteria fulfilled:
yes
Conclusions:
DecaBDE was not toxic to the sediment organism, L. varigaetus.
Executive summary:

The NOEC concentration of DecaBDE in 2% TOC sediment to the oligochaete, L. varigaetus, was 5000 mg/kg dry weight sediment based on a lack of effects on survival/reproduction and growth.