  The parameters and elemental abundances of atmospheres for ten thick-disk red
giants was determined from high-resolution spectra by the method of model
stellar atmospheres. The results of a comparative analysis of the [Na/Fe]
abundances in the atmospheres of the investigated stars and thin disk red
giants are presented. Sodium in the atmospheres of thick-disk red giants is
shown to have no overabundances typical of thin-disk red giants.
