| 摘要 |
<p>The invention concerns a method for purifying, and concentrating into a minor constituent, a gaseous mixture, a method for detecting said constituent, and an installation for implementing said method. Said method comprises successively a selective permeation of the gaseous mixture through a specific membrane, a purifying step and a concentrating step. The treated gaseous mixture is atmospheric air whereof it is sought to concentrate some of the rare gases in particular xenon and the natural and radioactive species of xenon. The invention combined with nuclear spectrometry is therefore useful for detecting said species, whereof there is very little in the atmosphere, and for monitoring the environment of nuclear stations.</p> |
