Published 1994
| Version v1
Journal article
Radiochemical separation of U and Th isotopes in phosphate rich samples for age determination
- 1. Univ. Mohammed-V, Faculte des Sciences, Lab. de Physique Nucleaire, Rabat (Morocco)
- 2. Univ. Ibn Tofail, Faculte des Sciences, Dept. de Physique, Kenitra (Morocco)
- 3. Centre des Faibles Radioactivities, Lab. Mixte CNRS/CEA, Domaine du CNRS, 91 Gif-sur Yvette (France)
Description
A related radiochemical method for age determination of marine carbonate samples (corals, shells, ..) has been modified for processing phosphate samples. It is based on a single anion exchange column: U is retained in 8 M HCl and Th in 8 M HNO3. Th is quantitatively fixed in the latter medium provided [PO3-4] is < 0.1 M. Trials on real samples yield U and Th recoveries of 75 and 85%, respectively. This method contrasts with time-consuming procedures described in earlier works. (orig.)
Additional details
Publishing Information
- Journal Title
- Radiochimica Acta
- Journal Volume
- 65
- Journal Issue
- 2
- Journal Page Range
- p. 137-139.
- ISSN
- 0033-8230
- CODEN
- RAACAP
INIS
- Country of Publication
- Germany
- Country of Input or Organization
- Germany
- INIS RN
- 26004822
- Subject category
- S38: RADIATION CHEMISTRY, RADIOCHEMISTRY AND NUCLEAR CHEMISTRY;
- Descriptors DEI
- AGE ESTIMATION; ION EXCHANGE; ISOTOPE SEPARATION; PHOSPHATES; SAMPLE PREPARATION; THORIUM; URANIUM
- Descriptors DEC
- ACTINIDES; ELEMENTS; METALS; OXYGEN COMPOUNDS; PHOSPHORUS COMPOUNDS; SEPARATION PROCESSES