The partial solubility parameters of cellulose and AKD (Alkylketene dimer) treated paper were determined by inverse gas chromatography. The Snyder/Karger-Hansen interaction model was used, where -ΔEA= Viδld+ δlpδjp+ δjhδjh). The adsorption internal energies of a series of n-alkanes and five polar probes were measured. From the ΔEAvalues of n-decane, acetone and THF, which give the largest normalized determinant M(n), the partial solubility parameters of the stationary phases were calculated. The partial solubility parameters of cellulose were: δd= 8027; δp= 8.00; δh= 13.88; δt= 18.03 cal½/cm3/2AKD treated paper gave δd= 8.10, δp= 12.35, δh= 7.96, and δt= 16.78 cal½/cm3/2.