The selection of investigative suitable for gallium is subject to limitations imposed by its nuclear half life. The objective was to develop a method suitable for destructive activation analysis of gallium in laboratories for medium activity levels. Hence, it was necessary to decrease the activity of the gallium matrix by at least two orders of magnitude, as by pretreating the sample before activation. A distillation method was developed to remove the gallium matrix, utilizing the significant vapor tension differences between the galliumtrichloride and the chlorides of the investigated impurities. The main point of the method is the reaction between the metallic gallium sample and dry chlorine gas, removing 99% of the gallium matrix. After the distillation process as well defined portion of the investigated impurities is retained, and the distillation efficiency is governed by technological factors. It was possible to determine the copper content at a concentration range of 10- //6 to 10- //7 g/g with plus or minus 40% deviation, and the gold content at a concentration range of 10- //8 to 10- //9 g/g with plus or minus 50% deviation.
|Number of pages||8|
|Journal||Periodica Polytechnica Chemical Engineering|
|Publication status||Published - Jan 1 1970|
ASJC Scopus subject areas
- Chemical Engineering(all)