Abstract: Gas-liquid chromatography was developed to measure the salt effect coefficients (k_s) of some solutes, such as hydrocarbons, aromatic-hydrocarbons, chloro-hydrocarbons, alcohols and ke-tones, in salt-containing solutions of sulfolane at 333.15 K. The experimental results show that the salt effect relationship for the most of solutes can be presented by Setschenow's equation; the properties of anions in the solution play a more important role for salt effect than those of cations; the charge transfer interaction of electrons from anions to 3d unoccupied orbitals of Cl in chloro-hydrocarbons has a notable impact on k_s. Furthermore, the dependance of k_s, on the alcohol structure at the absence of the alcohol self- association, and the difference of _s between ketones and alcohols'are also investigated.

Key words: Salt effect, Gas-liquid chromatography, Nonaqueous solution, Sulfolane