The influence of the calcination and water washing treatments on the uranium content in sedimentary phosphate samples using solid state nuclear trackdetectors and gamma-ray spectrometry

Authors
Misdaq, MA Ouahidi, Y Fakhi, S Lamine, J Bakhchi, A Yves, A Azouazi, M Abbe, JC Benmansour, M
Citation
Ma. Misdaq et al., The influence of the calcination and water washing treatments on the uranium content in sedimentary phosphate samples using solid state nuclear trackdetectors and gamma-ray spectrometry, J RAD NUCL, 246(2), 2000, pp. 285-290
Citations number
14
Categorie Soggetti
Inorganic & Nuclear Chemistry
Journal title
JOURNAL OF RADIOANALYTICAL AND NUCLEAR CHEMISTRY
ISSN journal
02365731 → ACNP
Volume
246
Issue
2
Year of publication
2000
Pages
285 - 290
Database
ISI
SICI code
0236-5731(200011)246:2<285:TIOTCA>2.0.ZU;2-F
Abstract
The uranium and thorium contents were evaluated in the 100-400 mum granulom etric fraction of different sedimentary phosphate samples by using a method based on determining the mean critical angles of etching of the CR-39 and LR-115 type II solid state nuclear track detectors (SSNTD) for detecting al pha -particles emitted by the nuclei of the uranium-238 and thorium-232 ser ies. Data obtained were compared with the results of gamma -ray spectrometr y measurements performed on the same samples. The influence of the calcinat ion and water washing treatments as well as the lithology and stratigraphy on the uranium concentration of the phosphate samples was investigated.