Registration Dossier

Administrative data

Endpoint:
adsorption / desorption
Remarks:
adsorption/desorption
Type of information:
experimental study
Adequacy of study:
key study
Reliability:
2 (reliable with restrictions)
Rationale for reliability incl. deficiencies:
other: Information contained i a peer-reviewed publication edited by a National Public Institute

Data source

Referenceopen allclose all

Reference Type:
review article or handbook
Title:
Unnamed
Year:
1997
Reference Type:
publication
Title:
Unnamed
Year:
1992
Reference Type:
publication
Title:
Trace metal transport and partitioning in the suspended sediments of the Rio Grande and tributaries in Central New Mexico
Author:
Popp and Laquer
Year:
1980
Bibliographic source:
Chemosphere, 9: 89-98, 1980
Reference Type:
publication
Title:
Desorption and coagulation of trace elements during estuarine mixing
Author:
Li et al.
Year:
1984
Bibliographic source:
Geochimica et Cosmochimica Acta, 48: 1879-1884 (1984)

Materials and methods

Principles of method if other than guideline:
Partition coefficients between particulate matter and water derived using measurements in 4 location in the Netherlands. Partition coefficients between soil and water based on batch experiments. Partition coefficients between sediment and water estimated on the basis of partition coefficients between particulate matter and water.
GLP compliance:
not specified

Test material

Reference
Name:
Unnamed
Type:
Constituent

Results and discussion

Partition coefficientsopen allclose all
Phase system:
suspended matter-water
Type:
log Kp
Value:
3.13
Remarks on result:
other: Value derived by Bockting et al. (1992) using measurements in fresh surface water samples of 4 locations in the Netherlands from 1983-1986 and data from Popp and Laquer (1980) and Li et al. (1984), in North American rivers
Phase system:
soil-water
Type:
log Kp
Value:
1.78
Remarks on result:
other: Value based on literature study using batch experiments (Bockting et al., 1992)
Phase system:
sediment-water
Type:
log Kp
Value:
3
Remarks on result:
other: Estimated value on the basis of partition coefficientsbetween particulate matter and water (Stortelder et al., 1989)

Any other information on results incl. tables

All log-values are based on the Kp in L/kg. The values for soil and sediment are expressed as a value in standard soil/sediment (containing 10% organic matter and 25% of clay).

Applicant's summary and conclusion