Thermochromatography and activation analysis

Gas thermochromatography is a promising method in combination with neutron activation analysis. The procedure includes heating of irradiated samples i n a stream of reacting gas carrier (air, chlorine, etc.) or heating in pres ence of compounds evolving gas at high temperatures. Gaseous products are p assed through a tube with certain temperature gradient filled with various sorbents and the gases condense in different parts of the column. Studies o f the processes of producing and trapping of Volatile compounds allowed to work out various set-ups of apparatus with sorption tubes of various length and Various temperature gradients, various filters, sorbents, etc. Sensiti vity of these methods is sufficiently better then in INAA.