Registration Dossier
Registration Dossier
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EC number: 240-894-1 | CAS number: 16871-71-9
Additional information on environmental fate and behaviour
Administrative data
- Endpoint:
- additional information on environmental fate and behaviour
- Type of information:
- migrated information: read-across based on grouping of substances (category approach)
- Adequacy of study:
- key study
- Reliability:
- 1 (reliable without restriction)
- Rationale for reliability incl. deficiencies:
- other: Field water enclosure study well documented to assess removal of zinc from water column.
Data source
Reference
- Reference Type:
- publication
- Title:
- Biogeochemistry and effects of copper, managanese and zinc added to enclosures in island Billabong, Mangela creek, northern Australia.
- Author:
- Hart BA, Currey NA and Jones MJ (1992).
- Year:
- 1 992
- Bibliographic source:
- Hydrobiologia 230, 93-134
Materials and methods
Test guideline
- Qualifier:
- no guideline followed
- Principles of method if other than guideline:
- "Zinc" was added to field water enclosure and evoluation of zinc concentration was measured in time.
- GLP compliance:
- not specified
Test material
- Reference substance name:
- zinc metal
- IUPAC Name:
- zinc metal
- Reference substance name:
- Zinc
- EC Number:
- 231-175-3
- EC Name:
- Zinc
- Cas Number:
- 7440-66-6
- Molecular formula:
- Zn
- IUPAC Name:
- zinc
Constituent 1
Constituent 2
Results and discussion
Any other information on results incl. tables
Total zinc was removed 70%from the water column of the enclosure after 11 days, particulate zinc was removed 70% after 12 days, ion-exchangeable zinc was removed 70% after 12 days.
The Mass balance at end of the experiment was: (with 3.58g total zinc added): water column 6%, sediment 84%, epiphytes 10%.
Applicant's summary and conclusion
- Conclusions:
- Good quality study useful to assess endpoint of zinc removal from water column.
- Executive summary:
Removal of zinc from a natural water column was assessed through an in-situ field water enclosure study.
Total zinc was removed 70% from the water column of the enclosure after 11 days, particulate zinc was removed 70% after 12 days, ion-exchangeable zinc was removed 70% after 12 days.
The Mass balance at end of the experiment was: (with 3.58g total zinc added): water column 6%, sediment 84%, epiphytes 10%.
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