|
|||||
|
|
The Influence of the Calcination and Water Washing Treatments on the Uranium Content in Sedimentary Phosphate Samples Using Solid State Nuclear Track Detectors and Gamma-Ray Spectrometry |
|
| Authors: | M A Misdaq Y Ouahidi S Fakhi J Lamine A Bakhchi A Yves M Azouazi J C Abbe M Benmansour |
| Institution: | (1) Nuclear Physics and Techniques Laboratory, Faculty of Sciences Semlalia, University Cadi Ayyad, BP. 2390, Marrakech, Morocco;(2) Laboratory of Physics and Instrumentation of Ionizing Radiation, Faculty of Sciences Ben M'sick, University Hassan II Mohammadia, Casablanca, Morocco;(3) Nuclear Physics and Techniques Laboratory, Faculty of Sciences Semlalia, BP. 2390, University Cadi Ayyad, Marrakech, Morocco;(4) School of Mining, Subatech Analysis Laboratory, Nantes, France;(5) CNESTEN, Rabat, Morocco |
| Abstract: | The uranium and thorium contents were evaluated in the 100–400 µm granulometric 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  -particles emitted by the nuclei of the uranium-238 and thorium-232 series. Data obtained were compared with the results of  -ray spectrometry measurements performed on the same samples. The influence of the calcination and water washing treatments as well as the lithology and stratigraphy on the uranium concentration of the phosphate samples was investigated. |
| Keywords: | |
| 本文献已被 SpringerLink 等数据库收录！ | |