Abstract
It was investigated gas-sensitivity of gelatin/Cu2S and gelatin/CdS samples in effect of vapors of dif- ferent solvents and ethyl alcohol. It was showed that, composites on base of polymers with Cu2S and CdS nanoparticles are sensitive to vapors of different solvents. Gas-sensitivity of nanocomposites depends on rate of matrix filling and chemical data of testing gas. These materials could be used as a sensitive element in different gas sensors and detectors.