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Environmental fate & pathways

Additional information on environmental fate and behaviour

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Administrative data

Endpoint:
additional information on environmental fate and behaviour
Type of information:
migrated information: read-across from supporting substance (structural analogue or surrogate)
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:
1992
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
Name:
Unnamed
Type:
Constituent
Type:
Constituent

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%.