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Diss Factsheets

Ecotoxicological information

Toxicity to soil microorganisms

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Administrative data

Link to relevant study record(s)

Reference
Endpoint:
toxicity to soil microorganisms
Type of information:
read-across from supporting substance (structural analogue or surrogate)
Adequacy of study:
key study
Justification for type of information:
please refer to Read-across statement attached in section 13
Reason / purpose for cross-reference:
read-across source
Duration:
28 d
Dose descriptor:
EC10
Remarks:
Vanadium toxicity thresholds (10% effective concentration)
Effect conc.:
129.9 mg/kg soil dw
Nominal / measured:
meas. (not specified)
Conc. based on:
element
Remarks:
converted to VAA
Basis for effect:
nitrate formation rate
Remarks on result:
other: Result for Guadalajarda topsoil (Spain)
Remarks:
for details on the calculation please refer to 'Overall remarks'
Duration:
28 d
Dose descriptor:
EC50
Remarks:
median effective concentration
Effect conc.:
888.8 mg/kg soil dw
Nominal / measured:
meas. (not specified)
Conc. based on:
element
Remarks:
converted to VAA
Basis for effect:
nitrate formation rate
Remarks on result:
other: Result for Guadalajarda topsoil (Spain)
Remarks:
for details on the calculation please refer to 'Overall remarks'
Duration:
28 d
Dose descriptor:
EC10
Remarks:
toxicity thresholds (10% effective concentration)
Effect conc.:
396.5 mg/kg soil dw
Nominal / measured:
meas. (not specified)
Conc. based on:
element
Remarks:
converted to VAA
Basis for effect:
respiration rate
Remarks on result:
other: Result for Guadalajarda topsoil (Spain)
Remarks:
for details on the calculation please refer to 'Overall remarks'
Duration:
28 d
Dose descriptor:
EC50
Effect conc.:
3 965.4 mg/kg soil dw
Nominal / measured:
meas. (not specified)
Conc. based on:
element
Remarks:
converted to VAA
Basis for effect:
respiration rate
Remarks on result:
other: Result for Guadalajarda topsoil (Spain)
Remarks:
for details on the calculation please refer to 'Overall remarks'
Duration:
28 d
Dose descriptor:
EC10
Effect conc.:
95.7 mg/kg soil dw
Nominal / measured:
meas. (not specified)
Conc. based on:
element
Remarks:
converted to VAA
Basis for effect:
nitrate formation rate
Remarks on result:
other: Result for Pustnäs soil
Remarks:
for details on the calculation please refer to 'Overall remarks'
Duration:
28 d
Dose descriptor:
EC50
Effect conc.:
683.7 mg/kg soil dw
Nominal / measured:
meas. (not specified)
Conc. based on:
element
Remarks:
converted to VAA
Basis for effect:
nitrate formation rate
Remarks on result:
other: Result for Pustnäs soil
Remarks:
for details on the calculation please refer to 'Overall remarks'
Duration:
28 d
Dose descriptor:
EC10
Effect conc.:
68.4 mg/kg soil dw
Nominal / measured:
meas. (not specified)
Conc. based on:
element
Remarks:
converted to VAA
Basis for effect:
respiration rate
Remarks on result:
other: Result for Pustnäs soil
Remarks:
for details on the calculation please refer to 'Overall remarks'
Duration:
28 d
Dose descriptor:
EC50
Effect conc.:
1 367.4 mg/kg soil dw
Nominal / measured:
meas. (not specified)
Conc. based on:
element
Remarks:
converted to VAA
Basis for effect:
respiration rate
Remarks on result:
other: Result for Pustnäs soil
Remarks:
for details on the calculation please refer to 'Overall remarks'
Duration:
28 d
Dose descriptor:
EC50
Effect conc.:
4 717.4 mg/kg soil dw
Nominal / measured:
meas. (not specified)
Conc. based on:
element
Remarks:
converted to VAA
Basis for effect:
nitrate formation rate
Remarks on result:
other: Result for Saby soil
Remarks:
for details on the calculation please refer to 'Overall remarks'
Duration:
28 d
Dose descriptor:
EC50
Effect conc.:
164.1 mg/kg soil dw
Nominal / measured:
meas. (not specified)
Conc. based on:
element
Remarks:
converted to VAA
Basis for effect:
respiration rate
Remarks on result:
other: Result for Saby soil
Remarks:
for details on the calculation please refer to 'Overall remarks'
Duration:
28 d
Dose descriptor:
EC50
Effect conc.:
2 256.2 mg/kg soil dw
Nominal / measured:
meas. (not specified)
Conc. based on:
element
Remarks:
converted to VAA
Basis for effect:
nitrate formation rate
Remarks on result:
other: Result for Ter Munk soil
Remarks:
for details on the calculation please refer to 'Overall remarks'
Duration:
28 d
Dose descriptor:
EC50
Effect conc.:
2 187.8 mg/kg soil dw
Nominal / measured:
meas. (not specified)
Conc. based on:
element
Remarks:
converted to VAA
Basis for effect:
respiration rate
Remarks on result:
other: Result for Ter Munk soil
Remarks:
for details on the calculation please refer to 'Overall remarks'
Duration:
28 d
Dose descriptor:
EC50
Effect conc.:
191.4 mg/kg soil dw
Nominal / measured:
meas. (not specified)
Conc. based on:
element
Remarks:
converted to VAA
Basis for effect:
nitrate formation rate
Remarks on result:
other: Result for Zwijnaarde soil
Remarks:
for details on the calculation please refer to 'Overall remarks'
Duration:
28 d
Dose descriptor:
EC50
Effect conc.:
1 504.1 mg/kg soil dw
Nominal / measured:
meas. (not specified)
Conc. based on:
element
Remarks:
converted to VAA
Basis for effect:
respiration rate
Remarks on result:
other: Result for Zwijnaarde soil
Remarks:
for details on the calculation please refer to 'Overall remarks'

Description of key information

Assay of potential nitrification rate: EC50: 191.43 to 4717.46 mg VAA/kg soil.

Assay of substrate-induced respiration: EC50: 1367.38 to 3965.40 mg VAA/kg soil.

The potential nitrification rate EC10 values were all in the range of the vanadium background concentrations with the exception of the Saby soil.

Key value for chemical safety assessment

Short-term EC50 for soil microorganisms:
191.43 mg/kg soil dw

Additional information