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Environmental fate & pathways

Adsorption / desorption

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Administrative data

Endpoint:
adsorption / desorption: screening
Type of information:
experimental study
Adequacy of study:
key study
Study period:
1982
Reliability:
2 (reliable with restrictions)
Rationale for reliability incl. deficiencies:
other: The test procedure performed is in accordance with accepted scientific measures and similar to an OECD guideline. Purity is not specified but documentation of the test procedure is sufficient.

Data source

Reference
Reference Type:
publication
Title:
Adsorption of substituted phenols by soil
Author:
Boyd SA
Year:
1982
Bibliographic source:
Soil Sci. 134(5), 337-343

Materials and methods

Test guideline
Qualifier:
equivalent or similar to
Guideline:
OECD Guideline 106 (Adsorption - Desorption Using a Batch Equilibrium Method)
Deviations:
no
GLP compliance:
no
Type of method:
batch equilibrium method
Media:
soil

Test material

Reference
Name:
Unnamed
Type:
Constituent
Radiolabelling:
no

Study design

Test temperature:
20 +/-1 °C

Batch equilibrium or other method

Analytical monitoring:
yes
Details on test conditions:
Soil: Brookston clay loam soil (type Argiaquoll, fine, loamy, mixed, mesic), collected from top 15 cm air-dried, 5.10 % organic matter, pH 5.7 soil/solution ratio 1:10 TS concentrations 5, 10, 20, 30, 50 mg/L, deoxygenated by purging with N2 and H2 (9:1 v/v).

Results and discussion

Adsorption coefficient
Type:
Koc
Value:
22

Results: Batch equilibrium or other method

Transformation products:
not measured
Details on results (Batch equilibrium method):
predicted Koc = 18

Applicant's summary and conclusion