You need JavaScript to view this

Methodology of simultaneous analysis of Uranium and Thorium by nuclear and atomic techniques. Application to the Uranium and Thorium dosing in mineralogic samples; Methodologie d`analyse simultanee de l`Uranium et du Thorium par des techniques nucleaires et atomiques. Application au dosage de l`Uranium et du Thorium dans les echantillons mineralogiques

Thesis/Dissertation:

Abstract

This work concerns essentially the potential applications of 100 kW nuclear reactor of Strasbourg Nuclear Research Centre to neutron activation analysis of Uranium and Thorium. The Uranium dosing has been made using: 239-U, 239-Np, fission products or delayed neutrons. Thorium has been showed up by means of 233-Th or 233-Pa. The 239-U and 233-Th detection leads to a rapid and non-destructive analysis of Uranium and Thorium. The maximum sensitivity is of 78 ng for Uranium and of 160 ng for Thorium. The Uranium and Thorium dosing based on 239-Np and 233-Pa detection needs chemical selective separations for each of these radionuclides. The liquid-liquid extraction has permitted to elaborate rapid and quantitative separation methods. The sensitivities of the analysis after extraction reach 30 ng for Uranium and 50 ng for Thorium. The fission products separation study has allowed to elaborate the La, Ce and Nd extractions and its application to the Uranium dosing gives satisfying results. A rapid dosing method with a sensitivity of 0.35 microgramme has been elaborated with the help of delayed neutrons measurement. These different methods have been applied to the Uranium and Thorium dosing in samples coming from Oklo mine in Gabon. The analyses of these samples  More>>
Authors:
Fakhi, S [1] 
  1. Universite Mohammed 5, Rabat (Morocco). Faculte des Sciences
Publication Date:
Apr 15, 1988
Product Type:
Thesis/Dissertation
Report Number:
INIS-mf-13064
Reference Number:
SCA: 050100; 400101; PA: AIX-23:010960; SN: 92000637703
Resource Relation:
Other Information: TH: Thesis (D.d`etat es sc.).; PBD: 15 Apr 1988
Subject:
11 NUCLEAR FUEL CYCLE AND FUEL MATERIALS; 37 INORGANIC, ORGANIC, PHYSICAL AND ANALYTICAL CHEMISTRY; THORIUM; NEUTRON ACTIVATION ANALYSIS; THORIUM ORES; ABSORPTION SPECTROSCOPY; PIXE ANALYSIS; URANIUM; URANIUM ORES; DELAYED NEUTRONS; EXPERIMENTAL DATA; FISSION PRODUCTS; NEPTUNIUM 239; PROTACTINIUM 233; THORIUM 233; URANIUM 239; 050100; 400101; RESERVES, EXPLORATION, AND MINING; ACTIVATION, NUCLEAR REACTION, RADIOMETRIC, AND RADIOCHEMICAL PROCEDURES
OSTI ID:
10111142
Research Organizations:
Universite Mohammed 5, Rabat (Morocco). Faculte des Sciences
Country of Origin:
Morocco
Language:
French
Other Identifying Numbers:
Other: ON: DE92613471; TRN: MA9100017010960
Availability:
OSTI; NTIS (US Sales Only); INIS
Submitting Site:
INIS
Size:
193 p.
Announcement Date:
Jun 30, 2005

Thesis/Dissertation:

Citation Formats

Fakhi, S. Methodology of simultaneous analysis of Uranium and Thorium by nuclear and atomic techniques. Application to the Uranium and Thorium dosing in mineralogic samples; Methodologie d`analyse simultanee de l`Uranium et du Thorium par des techniques nucleaires et atomiques. Application au dosage de l`Uranium et du Thorium dans les echantillons mineralogiques. Morocco: N. p., 1988. Web.
Fakhi, S. Methodology of simultaneous analysis of Uranium and Thorium by nuclear and atomic techniques. Application to the Uranium and Thorium dosing in mineralogic samples; Methodologie d`analyse simultanee de l`Uranium et du Thorium par des techniques nucleaires et atomiques. Application au dosage de l`Uranium et du Thorium dans les echantillons mineralogiques. Morocco.
Fakhi, S. 1988. "Methodology of simultaneous analysis of Uranium and Thorium by nuclear and atomic techniques. Application to the Uranium and Thorium dosing in mineralogic samples; Methodologie d`analyse simultanee de l`Uranium et du Thorium par des techniques nucleaires et atomiques. Application au dosage de l`Uranium et du Thorium dans les echantillons mineralogiques." Morocco.
@misc{etde_10111142,
title = {Methodology of simultaneous analysis of Uranium and Thorium by nuclear and atomic techniques. Application to the Uranium and Thorium dosing in mineralogic samples; Methodologie d`analyse simultanee de l`Uranium et du Thorium par des techniques nucleaires et atomiques. Application au dosage de l`Uranium et du Thorium dans les echantillons mineralogiques}
author = {Fakhi, S}
abstractNote = {This work concerns essentially the potential applications of 100 kW nuclear reactor of Strasbourg Nuclear Research Centre to neutron activation analysis of Uranium and Thorium. The Uranium dosing has been made using: 239-U, 239-Np, fission products or delayed neutrons. Thorium has been showed up by means of 233-Th or 233-Pa. The 239-U and 233-Th detection leads to a rapid and non-destructive analysis of Uranium and Thorium. The maximum sensitivity is of 78 ng for Uranium and of 160 ng for Thorium. The Uranium and Thorium dosing based on 239-Np and 233-Pa detection needs chemical selective separations for each of these radionuclides. The liquid-liquid extraction has permitted to elaborate rapid and quantitative separation methods. The sensitivities of the analysis after extraction reach 30 ng for Uranium and 50 ng for Thorium. The fission products separation study has allowed to elaborate the La, Ce and Nd extractions and its application to the Uranium dosing gives satisfying results. A rapid dosing method with a sensitivity of 0.35 microgramme has been elaborated with the help of delayed neutrons measurement. These different methods have been applied to the Uranium and Thorium dosing in samples coming from Oklo mine in Gabon. The analyses of these samples by atomic absorption spectroscopy and by the proton induced X-ray emission (PIXE) method confirm that the neutron activation analysis methods are reliable. 37 figs., 14 tabs., 50 refs.}
place = {Morocco}
year = {1988}
month = {Apr}
}