Registration Dossier

Administrative data

Endpoint:
other distribution data
Type of information:
experimental study
Adequacy of study:
other information
Reliability:
4 (not assignable)
Rationale for reliability incl. deficiencies:
other: General, non-specialized publication

Data source

Reference
Reference Type:
study report
Title:
Unnamed
Year:
2000

Materials and methods

Test guideline
Qualifier:
no guideline followed
Principles of method if other than guideline:
Halogenated organic compound production triggered by Fe reduction in soils in the presence of iodide, presence of different halide ions and guaiacol inducement.
GLP compliance:
no
Type of study:
other: Halocarbon production in soils
Media:
soil - air

Test material

Reference
Name:
Unnamed
Type:
Constituent

Results and discussion

Any other information on results incl. tables

In surface peat-bog waters containing suspended organic matter were observed to produce, iodomethane, iodoethane,- propane and butane were found to be released.

Methyl halide distribution in freeze-dried versus 105°C dried samples revealed an abiotic reaction mechanism that forms alkyl halide. Organic matter is oxidized and the redox partner reduced; during the process halides are methylated and the methyl halides formed represent degradation product of oxidized organic matter.

The release rate of 1 -halobutane is smaller than the release rate of 1 -halopropane, then ethane, then methane. The increase of iron in soils increases the release of alkyl halides (emission). A fraction of soil halogen content is methylated, mostly iodide, then bromide, then chloride.

Halomethane production increased with increasing halide ion concentration in the soil.

Applicant's summary and conclusion