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EC number: 233-279-4 | CAS number: 10102-90-6
- Life Cycle description
- Uses advised against
- Endpoint summary
- Appearance / physical state / colour
- Melting point / freezing point
- Boiling point
- Density
- Particle size distribution (Granulometry)
- Vapour pressure
- Partition coefficient
- Water solubility
- Solubility in organic solvents / fat solubility
- Surface tension
- Flash point
- Auto flammability
- Flammability
- Explosiveness
- Oxidising properties
- Oxidation reduction potential
- Stability in organic solvents and identity of relevant degradation products
- Storage stability and reactivity towards container material
- Stability: thermal, sunlight, metals
- pH
- Dissociation constant
- Viscosity
- Additional physico-chemical information
- Additional physico-chemical properties of nanomaterials
- Nanomaterial agglomeration / aggregation
- Nanomaterial crystalline phase
- Nanomaterial crystallite and grain size
- Nanomaterial aspect ratio / shape
- Nanomaterial specific surface area
- Nanomaterial Zeta potential
- Nanomaterial surface chemistry
- Nanomaterial dustiness
- Nanomaterial porosity
- Nanomaterial pour density
- Nanomaterial photocatalytic activity
- Nanomaterial radical formation potential
- Nanomaterial catalytic activity
- Endpoint summary
- Stability
- Biodegradation
- Bioaccumulation
- Transport and distribution
- Environmental data
- Additional information on environmental fate and behaviour
- Ecotoxicological Summary
- Aquatic toxicity
- Endpoint summary
- Short-term toxicity to fish
- Long-term toxicity to fish
- Short-term toxicity to aquatic invertebrates
- Long-term toxicity to aquatic invertebrates
- Toxicity to aquatic algae and cyanobacteria
- Toxicity to aquatic plants other than algae
- Toxicity to microorganisms
- Endocrine disrupter testing in aquatic vertebrates – in vivo
- Toxicity to other aquatic organisms
- Sediment toxicity
- Terrestrial toxicity
- Biological effects monitoring
- Biotransformation and kinetics
- Additional ecotoxological information
- Toxicological Summary
- Toxicokinetics, metabolism and distribution
- Acute Toxicity
- Irritation / corrosion
- Sensitisation
- Repeated dose toxicity
- Genetic toxicity
- Carcinogenicity
- Toxicity to reproduction
- Specific investigations
- Exposure related observations in humans
- Toxic effects on livestock and pets
- Additional toxicological data
Additional ecotoxological information
Administrative data
- Endpoint:
- additional ecotoxicological information
- Type of information:
- experimental study
- Adequacy of study:
- weight of evidence
- Reliability:
- 2 (reliable with restrictions)
- Rationale for reliability incl. deficiencies:
- study well documented, meets generally accepted scientific principles, acceptable for assessment
Data source
Reference
- Reference Type:
- other: PdD thesis
- Title:
- Les effets du cuivre sur la structure et le fonctionnement des ecosystemes aquatiques: une etude en mesocosmes lotiques; Effects of copper on structure and function of freshwater ecosystems: a lotic mesocosms study
- Author:
- Roussel, H.
- Year:
- 2 005
- Bibliographic source:
- These, Université Toulouse III - Paul Sabatier, U. F. R. Sciences de la Vie et de la Terre
Materials and methods
Test guideline
- Qualifier:
- no guideline followed
- Principles of method if other than guideline:
- Freshwater mesocosm study, covering different trophic levels
- GLP compliance:
- no
- Type of study / information:
- Freshwater mesocosm, covering different trophic levels
Test material
- Reference substance name:
- Copper sulphate
- EC Number:
- 231-847-6
- EC Name:
- Copper sulphate
- Cas Number:
- 7758-98-7
- Molecular formula:
- Cu.H2O4S
- IUPAC Name:
- copper(2+) sulfate
Constituent 1
- Specific details on test material used for the study:
- Cu2+ as delivered as CuSO4
Results and discussion
Any other information on results incl. tables
Results showed, in the 75 µg/L treatment, a decreased abundance of macrophytes, zooplankton, macroinvertebrates and an increased abundance of periphyton, emerging insects and fish. Taxa richness was lowered in all communities in the 75 µg/L treatment. The Principal Response Curve analyses, showed that copper at 25 and 75 µg/L altered community structure of all communities. Functioning of the leaf decomposition was altered at 75 µg/L. Aquatic hyphomycetes showed functional redundancy in their ability to degrade leaf litter. Copper direct toxic effects propagated within the trophic levels lead to indirect positive or negative effects. To help disentangling all these effects a food web model based on functional groups was build and qualitatively analyzed with loop analyses. Factors other than trophic interactions probably played an important role in structuring the ecosystem (tolerance, seasonal benefit, habitat availability, external invasion, access to more resources such as light or nutrient etc.). In conclusion, this study highlighted the interest of studying both ecosystem structure and function to identify a range of responses as symptoms of ecosystem dysfunctions. Considering all those results, a NOEAEC ecosystem was set at 5 µg/L (and 4 µg/l as dissolved).
Applicant's summary and conclusion
- Conclusions:
- Considering all results, a NOEC ecosystem was set up at 5 μg Cu/L for fresh water ecosystems.
- Executive summary:
During 18 months, environmentally realistic concentrations of copper (0, 5, 25 and 75 µg/L) where applied on 12 outdoor mesocosms of 20 m long (using tapwater) with 2 distint regions having a different depth. Copper concentrations at the end of the 18 month period were at the respective concentrations 17, 22, 80 and 196 mg Cu/kg dry weight. No organic carbon measurements are reported during the study. Copper effects on the ecosystem functioning included endpoints of relevance to the sediment compartment: leaf decomposition, fungi richness and sporulation as well as evaluations of macrophyte and macro-invertebrate populations. The results showed decreased leaf litter decomposition, decreased sporulation of fungi and decreased abundance/richness of litter associated invertebrates in the 75µg Cu/L enclosure. The data also showed increased abundance of macrophytes, periphyton and emerging insects at 75µg Cu/L. The NOEC and LOEC for the litterbag decomposition were therefore set at respectively 25 µg Cu/L and 75 µg Cu/L (nominal concentrations). The NOEC/LOEC levels are higher than the NOEC/LOEC derived for the pelagic compartment (set at 5 and 25 µg Cu/L). The results can be used to compare the protectiveness of single -species PNECS to multi-species systems. These results therefore confirm that the NOEC of the pelagic compartment is protective for the benthic community. The results also demonstrated a low sensitivity of stickleback (predating fish), supportive to the consideration of waterborne exposures as most sensitive exposure route.
The aim of this project was to evaluate the effects of copper on the structure and function of freshwater ecosystems. To achieve this goal, the use of experimental streams called mesocosms allowed to realize ecologically realistic study while controlling many parameters (contaminant exposure, water and sediment quality, antecedent of biotic and abiotic material, etc.). During 18 months, environmentally realistic concentrations of copper (0, 5, 25 and 75μg/L) where applied on 12 outdoor mesocosms of 20 m long. Community structure of phytoplankton, periphyton, macrophytes, zooplankton, macroinvertebrates, emerging insects, aquatic hyphomycètes and population dynamics of three-spined sticklebacks was monitored. Copper effects on the ecosystem functioning was studied through (1) the leaf decomposition process and (2) the buildup of a food web model followed by qualitative loop analyses. Results showed, in the 75μg/L treatment, a decreased abundance of macrophytes, zooplankton, macroinvertebrates and an increased abundance of periphyton, hyphomycetes, emerging insects and fish. Taxa richness was lowered in all communities in the 75μg/L treatment. The Principal Response Curve analyses, showed that copper at 25 and 75μg/L altered community structure of all communities. Functioning of the leaf decomposition was altered at 75μg/L. Aquatic hyphomycetes showed functional redundancy in their ability to degrade leaf litter. Copper direct toxic effects propagated within the trophic levels and leaded to indirect positive or negative effects. To help disentangling all these effects a food web model based on functional groups was build and qualitatively analyzed with loop analyses. Factors other than trophic interactions probably played an important role in structuring the ecosystem (tolerance, seasonal benefit, habitat availability, external invasion, access to more resources such as light or nutrient etc.). In conclusion, this study highlighted the interest of studying both ecosystem structure and function to identify a range of responses as symptoms of ecosystem dysfunctions. Considering all those results, a NOEC ecosystem was set up at 5μg/L for fresh water ecosystems.
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