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Environmental fate & pathways

Biodegradation in water: screening tests

Administrative data

Endpoint:
biodegradation in water: screening tests
Type of information:
experimental study
Adequacy of study:
key study
Study period:
1992
Reliability:
2 (reliable with restrictions)
Rationale for reliability incl. deficiencies:
other: Study performed according to Japanese (MITI/MHW) guidelines for a ready biodegradation study using commercial DecaBDE as the test article.

Data source

Referenceopen allclose all

Reference Type:
publication
Title:
Biodegradation and bioaccumulation data based on the CSCL Japan
Author:
Anonymous
Year:
1992
Bibliographic source:
Eds: Chemicals Inspection & Testing Institute, Tokyo, Japan
Reference Type:
publication
Title:
Unnamed
Year:
2002

Materials and methods

Test guidelineopen allclose all
Qualifier:
according to
Guideline:
other: ready biodegradation test of MITI/MHW Japan
Qualifier:
equivalent or similar to
Guideline:
OECD Guideline 301 C (Ready Biodegradability: Modified MITI Test (I))
Qualifier:
equivalent or similar to
Guideline:
OECD Guideline 302 C (Inherent Biodegradability: Modified MITI Test (II))
GLP compliance:
not specified

Test material

Reference
Name:
Unnamed
Type:
Constituent

Study design

Oxygen conditions:
aerobic
Inoculum or test system:
mixture of sewage, soil and natural water
Duration of test (contact time):
2 wk
Initial test substance concentration
Initial conc.:
100 mg/L
Based on:
test mat.

Results and discussion

% Degradation
Parameter:
% degradation (O2 consumption)
Value:
0
Sampling time:
14 d

Applicant's summary and conclusion

Validity criteria fulfilled:
yes
Interpretation of results:
under test conditions no biodegradation observed
Conclusions:
DecaBDE was not readily biodegradable by a mixture of sewage sludge, soil, sediment, and water under aerobic conditions.
Executive summary:

DecaBDE was not readily biodegradable by a mixture of sewage sludge, soil, sediment, and water under aerobic conditions.