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Diss Factsheets

Environmental fate & pathways

Adsorption / desorption

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Administrative data

Endpoint:
adsorption / desorption
Remarks:
adsorption
Type of information:
experimental study
Adequacy of study:
key study
Reliability:
2 (reliable with restrictions)
Rationale for reliability incl. deficiencies:
other: test procedure in accordance with national standard methods with acceptable restrictions

Data source

Reference
Reference Type:
study report
Title:
Unnamed
Year:
1995
Report date:
1993

Materials and methods

Test guideline
Qualifier:
according to guideline
Guideline:
other: BBA Nr. 4-IV-1 part 2 adopted Dec. 1986 "Leaching in soil"
GLP compliance:
not specified
Type of method:
other: leaching in soil
Media:
soil

Test material

Constituent 1
Chemical structure
Reference substance name:
2,4-dinitrotoluene
EC Number:
204-450-0
EC Name:
2,4-dinitrotoluene
Cas Number:
121-14-2
Molecular formula:
C7H6N2O4
IUPAC Name:
1-methyl-2,4-dinitrobenzene
Details on test material:
- Name of test material (as cited in study report): 2,4-Dinitrotoluene
- Analytical purity: > 99%
Radiolabelling:
not specified

Study design

Batch equilibrium or other method

Analytical monitoring:
yes
Details on matrix:
- the leaching behaviour of 2,4-DNT was determined in three different soils under laboratory conditions.
- three different standard soils (LUFA St. 2.1-2.3) tested: sand, loamy sand, and sandy loam
- Soil classification:
Clay: 3.5-8.3 %
Silt: 9.1-27.8 %
Sand: 64.1-87.4 %
Organic carbon: 0.7-1.34 %
pH: 5.8-6.6
Cation exchange capacity: 4.9-9.7 meq/100 g soil dw


Details on test conditions:
- applied amount: 5 mg 2,4-DNT/kg soil = 0.98 mg 2,4-DNT/column
- toluene as solubilizing agent

Results and discussion

Adsorption coefficientopen allclose all
Type:
Koc
Value:
> 10
Type:
log Koc
Value:
> 1

Any other information on results incl. tables

In the leachate of all 3 soil columns the 2,4-DNT concentration was 6.0 µg/l ( 0.3 % of 2,4-DNT applied).
2,4-DNT is not mobile in soil according to test guideline.

Applicant's summary and conclusion