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Environmental fate & pathways

Biodegradation in water: screening tests

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Administrative data

Endpoint:
biodegradation in water: ready biodegradability
Type of information:
experimental study
Adequacy of study:
key study

Data source

Reference
Reference Type:
study report
Title:
Unnamed
Year:
1998
Report date:
1998

Materials and methods

Test guidelineopen allclose all
Qualifier:
according to guideline
Guideline:
other:
Qualifier:
according to guideline
Guideline:
OECD Guideline 301 A (Ready Biodegradability: DOC Die Away Test)

Test material

Study design

Oxygen conditions:
aerobic
Inoculum or test system:
activated sludge, domestic, non-adapted
Duration of test (contact time):
28 d
Initial test substance concentration
Initial conc.:
30.4 mg/L
Based on:
DOC

Results and discussion

% Degradationopen allclose all
Parameter:
% degradation (DOC removal)
Value:
18
Sampling time:
7 d
Parameter:
% degradation (DOC removal)
Value:
39
Sampling time:
14 d
Parameter:
% degradation (DOC removal)
Value:
53
Sampling time:
21 d
Parameter:
% degradation (DOC removal)
Value:
61
Sampling time:
28 d

Applicant's summary and conclusion

Validity criteria fulfilled:
yes