The analytical capabilities of direct chromatomembrane headspace analysis and of a combination of chromatomembrane gas extraction with gas-adsorption preconcentration were considered using gas-chromatographic determination of aromatic and halogenated hydrocarbons in aqueous solutions as an example. The above combination, with the use of a flame-ionization detector, can simultaneously determine benzene and toluene at a level of 0.1-0.2 μg/L or chloroform and carbon tetrachloride at a level of 1-2 μg/L with a relative error of analysis 10-15%.