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Ecotoxicological information

Toxicity to soil macroorganisms except arthropods

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Administrative data

Endpoint:
toxicity to soil macroorganisms except arthropods: long-term
Type of information:
experimental study
Adequacy of study:
key study
Reliability:
2 (reliable with restrictions)
Rationale for reliability incl. deficiencies:
other: Guideline study, well documented and well performed according to scientific standards.

Data source

Reference
Reference Type:
publication
Title:
Toxicity of arsenate to the compostworm Eisenia fetida, the potworm Enchytraeus albidus and the springtail Folsomia candida
Author:
Lock K, Janssen CR
Year:
2002
Bibliographic source:
Bull. Environ. Contam. Toxicol. 68:760–765

Materials and methods

Test guideline
Qualifier:
according to
Guideline:
OECD Guideline 220 (Enchytraeid Reproduction Test)
Deviations:
no
GLP compliance:
not specified

Test material

Reference
Name:
Unnamed
Type:
Constituent
Details on test material:
Source: Sigma, Steinheim, purity > 98%

Test organisms

Test organisms (species):
Enchytraeus albidus
Animal group:
annelids

Study design

Study type:
laboratory study
Substrate type:
artificial soil
Total exposure duration:
6 wk

Test conditions

pH:
pH 6
Moisture:
55% of water holding cpacity
Nominal and measured concentrations:
nominal concentration were analytically confirmed

Results and discussion

Effect concentrationsopen allclose all
Duration:
42 d
Dose descriptor:
NOEC
Effect conc.:
10 mg/kg soil dw
Nominal / measured:
meas. (not specified)
Conc. based on:
element
Basis for effect:
reproduction
Duration:
42 d
Dose descriptor:
LOEC
Effect conc.:
18 mg/kg soil dw
Nominal / measured:
meas. (not specified)
Conc. based on:
element
Basis for effect:
reproduction
Duration:
42 d
Dose descriptor:
EC50
Effect conc.:
22.9 mg/kg soil dw
Nominal / measured:
meas. (not specified)
Conc. based on:
element
Basis for effect:
reproduction
Remarks on result:
other: CI:16.4 - 30.9
Duration:
21 d
Dose descriptor:
LC50
Effect conc.:
90.2 mg/kg soil dw
Nominal / measured:
meas. (not specified)
Conc. based on:
element
Basis for effect:
mortality
Remarks on result:
other: CI: 71.6-210

Applicant's summary and conclusion

Conclusions:
The NOEC for reproduction of E.albidus is 10 mg As/ kg artificial soil.