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Environmental fate & pathways

Distribution modelling

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Administrative data

Endpoint:
distribution modelling
Type of information:
experimental study
Adequacy of study:
other information
Reliability:
4 (not assignable)
Rationale for reliability incl. deficiencies:
other: migrated dataset

Data source

Reference
Title:
No information
Author:
Heim et al. (1994): Environ. Toxicol. Chem. 13(6), 879-888

Materials and methods

Model:
other: other (measurement)
Media:
other: Wasser - Sediment

Test material

Reference
Name:
Unnamed
Type:
Constituent
Details on test material:
TS-Freetext:
Einsatz von 14C-markiertem 3,4-Dichloranilin (Sigma Chemical
Co.), radiochemical purity > 98 %

Results and discussion

Any other information on results incl. tables

migrated dataset

In a laboratory experiment, the distribution of 14C-labelled 3,4-DCA in the sediment/water system was examined. 3 sediments collected from a creek, a pond and a drainage ditch of a fruitgrowing plantation were tested. Radioactivity left in the water phase was 21.8% (after 8 days) in the creek sediment, 10.4% (90 days) in the pond sediment and 1% (90 days) in the ditch sediment. The adsorption process was not finished after 28 d as the radioactivity decreased until day 90. 3,4-DCA was converted predominantly to non-extractable residues, presumably without preceding microbial transformation because no significant CO2 amounts (maximum 3.8%) could be detected (Heim et al., 1994).

RS-Freetext:
Gesamtwiederfindungsrate der Radioaktivität nach 6 Stunden
ca. 100 %, nach 8 Tagen ca. 80 %.
ca. 100 %, nach 8 Tagen ca. 80 %.
            |          % Radioaktivität
            |    6 Stunden     |    8 Tage
------------|------------------|-----------------
Wasser      |      89.3        |      21.8
Sediment    |      13.4        |      58.9
CO2         |      ---         |       0.1

Applicant's summary and conclusion