[en] The invention is related to the sorption gamma-resonance method of gaseous analysis and to devices of its realization. It can be used to identification and quantitative determination of interaction products of different components of gaseous mixture chemically reacting with a sorbent as a detector for gamma-resonance spectroscopy as well as for investigation of mechanism of operation and state of industrial catalyzers containing Messbauer nuclei (Fe, Sn, Eu etc.). The aim of invention is to provide the possibilities of gas analysis in a sorption gamma-resonance detector, containing a cylindrical chamber with input and output channels of gaseous mixture and an irradiation receiver in the form of anode-cathode electrode system