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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:
2012

Materials and methods

Test guidelineopen allclose all
Qualifier:
according to
Guideline:
OECD Guideline 301 B (Ready Biodegradability: CO2 Evolution Test)
Deviations:
no
Qualifier:
equivalent or similar to
Guideline:
EU Method C.4-C (Determination of the "Ready" Biodegradability - Carbon Dioxide Evolution Test)
Deviations:
no

Test material

Reference
Name:
Unnamed
Type:
Constituent
Test material form:
other:

Study design

Oxygen conditions:
aerobic
Inoculum or test system:
activated sludge, domestic, non-adapted
Duration of test (contact time):
ca. 61 d
Initial test substance concentrationopen allclose all
Initial conc.:
ca. 10 µg/L
Based on:
test mat.
Initial conc.:
ca. 100 µg/L
Based on:
test mat.

Results and discussion

% Degradationopen allclose all
Parameter:
% degradation (radiochem. meas.)
Value:
10
St. dev.:
0.5
Sampling time:
28 d
Parameter:
% degradation (radiochem. meas.)
Value:
13
St. dev.:
0.5
Sampling time:
61 d
Remarks on result:
other:

Applicant's summary and conclusion

Validity criteria fulfilled:
yes