Registration Dossier

Administrative data

Endpoint:
additional ecotoxicological information
Type of information:
experimental study
Adequacy of study:
key study
Reliability:
2 (reliable with restrictions)
Rationale for reliability incl. deficiencies:
other: Review article in which all information was assessed for adherence to guidelines/standards.

Data source

Reference
Reference Type:
publication
Title:
European risk assessment of LAS in agricultural soil revisited: Species sensitivity distribution and risk estimates
Author:
Jensen, J, Smith, SR, Krogh, PH, Versteeg, DJ, Temara, A
Year:
2007
Bibliographic source:
Chemosphere 69, 880-892

Materials and methods

Test guideline
Qualifier:
no guideline followed
Principles of method if other than guideline:
This is a review article of several studies regarding the ecotoxicity of LAS to soil organisms and plants in order to determine an overall PNEC for soil. All studies used to derive the PNEC were evaluated for adherence to testing guidelines and standards.
GLP compliance:
not specified
Type of study / information:
Review of several studies of terrestrial toxicity of LAS to soil macro-organisms and plants.

Test material

Reference
Name:
Unnamed
Type:
Constituent
Details on test material:
- Name of test material (as cited in study report): LAS

Results and discussion

Any other information on results incl. tables

The HC5 was determined to be 35.3 mg/kg soil. The 95% confidence interval was 18.6 -50.0 mg/kg. The PNEC for soil is therefore 35 mg/kg. The data used to calculate the PNEC is given below.

Data used in Determination of Soil PNEC

Species

Endpoint

EC10

(mg/kg soil)

EC50

(mg/kg soil)

Reference

Plants

Malva pusilla

Growth

110

204 (14-d)

Marschner, 1992

Solanum nigrum

Growth

120

169 (14-d)

Marschner, 1992

Chenopodium album

Growth

120

164 (14-d)

Marschner, 1992

Amaranthus retroflexus

Growth

110

142 (14-d)

Marschner, 1992

Nigella arvensis

Growth

52

133 (14-d)

Marschner, 1992

Galinsoga parviflora

Growth

55

90 (14-d)

Marschner, 1992

Brassica rapa

Growth

86

164 (14-d)

Gunther and Pestemer, 1992

Marschner, 1992

Avena Sativa

Growth

80

300 (14-d)

Gunther and Pestemer, 1992

Sinapis alba

Growth

200

300 (14-d)

Gunther and Pestemer, 1992

Sorghum bicolour

Growth

68

167 (21-d)

Windeat (1987)

Helianthus annus

Growth

116

289 (21-d)

Windeat (1987)

Phaseolus aureus

Growth

126

316 (21-d)

Windeat (1987)

Invertebrates

Eisenia foetida

Growth (14-d)

277

Swigert, 1989

Aporrectodea caliginosa

Reproduction

46

Krogh et al., 2007

Enchytraeus sp.

Reproduction

27

Holmstop and Krogh, 2001

Krogh et al., 2007

Folsomia fimetaria

Reproduction

107.6

Holmstrup and Krogh, 1996

Holmstrup et al., 2001

Jensen and Sverdrup, 2002

Folsomia candida

Reproduction

205

Krogh et al., 2007

Isotoma viridis

Growth

41

Jensen et al., 2001

Hypogastrura assimilis

Reproduction

100

Holmstrup and Krogh, 2001

Hypoaspis aculeifer

Reproduction

82

Holmstrup and Krogh, 2001

Platynothrus peltifer

Reproduction

320 (NOEC)

Jensen et al., 2001

Applicant's summary and conclusion

Conclusions:
The PNEC for soil is 35 mg/kg.
Executive summary:

This is a review article of several studies regarding the ecotoxicity of LAS to soil organisms and plants in order to determine an overall PNEC for soil. 9 invertebrate and 12 plant studies were used to calculate the PNEC. The data for both sets of studies were merged as the sensitivity of both types of species were similar. The PNEC for soil was determined to be 35 mg/kg soil.