Atmospheric air is the basic source of rare gases. Enriching near on properties of Kr and Xe components of air takes place in the process of high-purity rare gases reception. The ways of hit of chemical origin trace-elements in the atmosphere are investigated, properties of the binary mixtures formed by the components of air are analysed. The methods of having target gas products purification from the indicated substances are investigated, the present in literature technical data intended for this purpose pilot production options are brought. The presented information will be useful to the specialists, engaging in planning and exploitation of the vehicles included in the technological sequence of receipt of heavy rare gases.