Published 1900 | Version v1
Report Metadata-only

Origin of photosynthetic oxygen

Creators

  • 1. CEA Centre d'Etudes Nucleaires de Cadarache, 13 - Saint-Paul-les-Durance (France). Service de Radio-Agronomie

Description

From the comparison of isotopic exchange kinetics between C18O2 and the water of algae suspensions or aerial leaves subjected to alternating darkness and light, it becomes possible to calculate the isotopic abundance of the CO2 involved in the photochemical process; this value has been compared to those of the intracellular water and of the evolved O2. Kinetics of the appearance of 18O in the oxygen produced by algae suspended in enriched water are also presented

Abstract (French)

La comparaison des cinetiques d'echange isotopique entre C18O2 et l'eau d'un vegetal soumis a des alternances obscurite-lumiere permet de chiffrer l'abondance isotopique du CO2 implique dans l'acte photochimique; la valeur obtenue est comparee a celles de l'eau intracellulaire et de l'oxygene photosynthetise. On presente egalement les cinetiques d'apparition de l'18O dans l'oxygene produit par des suspensions d'algues dont l'eau est enrichie

Additional details

Additional titles

Original title (French)
Origine de l'oxygene photosynthetique

Publishing Information

Imprint Title
Proceedings of an international colloquium on oxygen isotopes, Cadarache, 4-9 September 1972
Imprint Pagination
p. 175-188.
Report number
CEA-CR--4

Conference

Title
International colloquium on oxygen isotopes.
Dates
04 Sep 1972.
Place
Cadarache, France.

INIS

Country of Publication
France
Country of Input or Organization
France
INIS RN
7232741
Subject category
S37: INORGANIC, ORGANIC, PHYSICAL AND ANALYTICAL CHEMISTRY; S63: RADIATION, THERMAL, AND OTHER ENVIRONMENTAL POLLUTANT EFFECTS ON LIVING ORGANISMS AND BIOLOGICAL MATERIALS;
Resource subtype / Literary indicator
Conference
Descriptors DEI
CARBON DIOXIDE; ISOTOPE RATIO; OXYGEN 18; PHOTOSYNTHESIS; REACTION KINETICS; TRACER TECHNIQUES
Descriptors DEC
CARBON COMPOUNDS; CARBON OXIDES; CHALCOGENIDES; CHEMICAL REACTIONS; EVEN-EVEN NUCLEI; ISOTOPE APPLICATIONS; ISOTOPES; KINETICS; LIGHT NUCLEI; NUCLEI; OXIDES; OXYGEN COMPOUNDS; OXYGEN ISOTOPES; STABLE ISOTOPES; SYNTHESIS

Optional Information

Notes
Imprint:Comptes rendus d'un colloque international sur les isotopes de l'oxygene, Cadarache, 4-9 septembre 1972.