Published December 1975 | Version v1
Report Open

Gaseous release of radioactive iodine from decaying plants. I. Release following foliar and root uptake

Creators

  • 1. CEA Centre d'Etudes Nucleaires de Cadarache, 13 - Saint-Paul-les-Durance (France). Service de Recherches Toxicologiques et Ecologiques

Description

Iodine uptake by plants is a significant link in the contamination of the food chain. Long half-live iodine was studied considering foliar and root uptake, loss by rain scavenging, residue decay or outgassing in order to assess two aspects of the problem: the importance of outgassing and the effect of the route of transfer on iodine losses. It appeared that iodine release was a function of the vegetal type, there were differences according to the pattern of absorption (via leaf or root) and the processes of iodine release were usually related to biochemical mechanisms

Availability note (English)

MF available from INIS under the Report Number.

Abstract (French)

L'absorption de l'iode par les vegetaux constitue un maillon important pour la contamination de la chaine alimentaire. On se place, dans le cas de l'iode a vie longue ou il convient de suivre, outre l'absorption foliaire et racinaire, les pertes par pluvio-lessivage, decomposition des residus ou degazage. On a mis en evidence deux aspects du probleme: l'intensite du degazage et l'influence du mode d'apport sur les pertes en iode. On a montre que le degazage de l'iode est fonction du type de vegetal, qu'il existe des differences dues au mode d'absorption (foliaire et racinaire) et que le processus de liberation de l'iode est generalement lie a des mecanismes biochimiques

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Additional details

Additional titles

Original title (French)
Degagement gazeux d'iode radioactif a partir de vegetaux en decomposition. I. Degazage apres absorption foliaire et absorption racinaire

Publishing Information

Imprint Pagination
20 p.
Report number
CEA-N--1846

INIS

Country of Publication
France
Country of Input or Organization
France
INIS RN
7278760
Subject category
S63: RADIATION, THERMAL, AND OTHER ENVIRONMENTAL POLLUTANT EFFECTS ON LIVING ORGANISMS AND BIOLOGICAL MATERIALS;
Descriptors DEI
CHRONIC INTAKE; DEGASSING; FOLIAR UPTAKE; IODINE; IODINE 125; ORGANIC COMPOUNDS; PLANTS; RADIONUCLIDE KINETICS; RADIONUCLIDE MIGRATION; ROOT ABSORPTION; SINGLE INTAKE; SOILS; WASHOUT
Descriptors DEC
BETA DECAY RADIOISOTOPES; DAYS LIVING RADIOISOTOPES; ELECTRON CAPTURE RADIOISOTOPES; ELEMENTS; FALLOUT; HALOGENS; INTAKE; INTERMEDIATE MASS NUCLEI; IODINE ISOTOPES; ISOTOPES; KINETICS; NONMETALS; NUCLEI; ODD-EVEN NUCLEI; RADIOISOTOPES; UPTAKE