Neutron activation analysis of microgram amounts of thorium in uranium ores and process liquors by means of thorium-233 |
| |
Authors: | A. Travesí J. Palomares G. Domínguez |
| |
Affiliation: | Radiochemistry Section, Division of Chemistry and Isotopes, Junta de Energía Nuclear, Madrid-3 Spain |
| |
Abstract: | A method is described for neutron activation analysis of thorium by employing thorium-233. Decontamination steps include anion exchange in 12.5 N HCL, precipitation of fluoride, extraction with mesityl oxide and thorium oxalate precipitation. The time spent is less than 1 h; spurious activities in counting samples amount only to 2% and can easily be corrected for. The sensitivity of the method is ca. 0.02 μg of thorium in a neutron flux of 1012n/cm2/sec with an irradiation time of 5 min. |
| |
Keywords: | |
本文献已被 ScienceDirect 等数据库收录! |