Published February 1990 | Version v1
Report Restricted

The behaviour of iodine in the terrestrial environment

Creators

Description

Literature on the geochemistry of iodine is surveyed, focusing on fundamental chemical aspects which influence the migration behaviour of iodine in the terrestrial environment. It is stated that the organic fraction in soil plays the predominant role in the retention of iodine. Simple aromatic molecules serve as simple models for humic acid, and humic acid is iodinated catalyzed by haloperoxidases. The enzymatically controlled iodination of humic acid is described in detail and it is demonstrated that the results may reflect a kind of equilibrium. It is shown that soil extracts are able to catalyze the iodination of humic acid and it is suggested that extracellular peroxidases in soil are reponsible for the reaction. The enzymatically controlled iodination of humic acid is discussed and some considerations about the influence on the migration of iodine in the terrestrial environment are given. (author) 4 tabs., 26 ills., 82 refs

Availability note (English)

MF available from INIS under the Report Number; Also available from Risoe Library, DK-4000 Roskilde.

Files

Restricted

The record is publicly accessible, but files are restricted to users with access.

Additional details

Additional titles

Subtitle (English)
An investigation of the possible enzymatically controlled iodination of humic acid

Publishing Information

ISBN
87-550-1615-4
Imprint Pagination
155 p.
Report number
RISO-M--2851

INIS

Country of Publication
Denmark
Country of Input or Organization
Denmark
INIS RN
22030876
Subject category
S37: INORGANIC, ORGANIC, PHYSICAL AND ANALYTICAL CHEMISTRY;
Resource subtype / Literary indicator
Thesis
Descriptors DEI
CATALYSIS; ENVIRONMENTAL TRANSPORT; GEOCHEMISTRY; HUMIC ACIDS; IODIDES; IODINATION; IODINE; PEROXIDASES; SOILS
Descriptors DEC
CARBOXYLIC ACIDS; CHEMICAL REACTIONS; ELEMENTS; ENZYMES; HALIDES; HALOGEN COMPOUNDS; HALOGENATION; HALOGENS; HETEROCYCLIC ACIDS; HETEROCYCLIC COMPOUNDS; IODINE COMPOUNDS; MASS TRANSFER; NONMETALS; ORGANIC ACIDS; ORGANIC COMPOUNDS; ORGANIC NITROGEN COMPOUNDS; OXIDOREDUCTASES; PORPHYRINS