Registration Dossier
Registration Dossier
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EC number: 231-842-9 | CAS number: 7758-89-6
Toxicity to soil microorganisms
Administrative data
Link to relevant study record(s)
Description of key information
Key value for chemical safety assessment
Additional information
Table. Toxicity of copper to soil microorganisms as given in EHC 200.
| Parameter | End-point | Concentration | Reference: |
| EC10 and EC50 | inhibition of CO2 production | 4.2 and 22 mg/kg for silt loam soil amended with alfalfa and sludge | Chang F-H & Broadbent FE (1981) Influence of trace metals on carbon dioxide evolution from a Yolo soil. Soil Sci, 132:416-421. |
EC50 |
inhibition of soil dehydrogenase acitivity |
29 mg/kg for soil enriched with 1% alfalfa, 45 mg/kg for soil not enriched |
Rogers JE & Li SW (1985) Effect of metals and other inorganic ions on soil microbial activity: soil dehydrogenase assay as a simple toxicity test. Bull Environ Contam Toxicol, 34: 858-865 |
EC50 (45d) |
soil respiration |
320 and 3200 mg/kg resulted in 35 and 60% inhibition |
Lighthart B, Baham J, & Volk VV (1983) Microbial respiration and chemical speciation in metal-amended soils. J Environ Qual, 12(4): 543-548. |
EC50 (5h) |
inhibition of soil urease acitvity |
inhibition between 13 and 16% |
Bremner JM & Douglas LA (1971) Inhibition of urease activity in soils. Soil Biol Biochem, 3: 297-307. |
| EC50 (6 weeks) | inhibition of urease activity | 260 mg/kg in sand to 4200 mg/kg in sandy peat | Doelman P & Haanstra L (1986) Short- and long-term effects of heavy metals on urease activity in soils. Biol Fertil Soils, 2: 213-218. |
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