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Ecotoxicological information

Toxicity to microorganisms

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Administrative data

Endpoint:
activated sludge respiration inhibition testing
Type of information:
migrated information: read-across based on grouping of substances (category approach)
Adequacy of study:
key study
Study period:
2009-10-13
Reliability:
1 (reliable without restriction)

Data source

Reference
Reference Type:
study report
Title:
Unnamed
Year:
2009
Report Date:
2009

Materials and methods

Test guideline
Qualifier:
according to
Guideline:
OECD Guideline 209 (Activated Sludge, Respiration Inhibition Test
Deviations:
yes
GLP compliance:
yes

Test material

Reference
Name:
Unnamed
Type:
Constituent

Sampling and analysis

Analytical monitoring:
no

Test solutions

Vehicle:
no

Test organisms

Test organisms (species):
activated sludge

Study design

Test type:
static
Water media type:
freshwater
Limit test:
yes
Total exposure duration:
3 h

Test conditions

Hardness:
Not determined
Test temperature:
20.1 °C
pH:
6.68
Salinity:
Not determined
Nominal and measured concentrations:
1000 mg/L
Reference substance (positive control):
yes
Remarks:
Copper (II) sulphate pentahydrate p.a.

Results and discussion

Effect concentrations
Duration:
3 h
Dose descriptor:
NOEC
Effect conc.:
> 1 000 mg/L
Nominal / measured:
nominal
Conc. based on:
test mat.
Basis for effect:
inhibition of total respiration
Remarks:
respiration rate
Reported statistics and error estimates:
The EC50 of the reference item was calculated with probit analysis using software SIGMAPLOT (Windows), SPSS CORPORATION.
Probit values were taken from WEBER (1986).

Applicant's summary and conclusion

Validity criteria fulfilled:
yes