Sulphur-modification of matter confers improved heavy metal affinity and could be exploited in the treatment of heavy metal contaminated water. This paper is aimed at comparing the selective liquid-liquid Ag+ sorption capacities of normal and thiolated: palm oil (PO), palm kernel oil (PKO) and soybean oil (SBO), respectively. The vegetable oils were modified with 1-heptanethiol and the thioether-functionalized (TF) oils were utilized for the removal of Ag+ present as contaminant in water, while the unmodified oils acted as controls. Liquid-liquid equilibrium contact time was determined to be 6 hours. The result achieved after equilibration, revealed the effectiveness of TF oils in the removal of Ag+ from a 600 ppm AgNO3 (aq). While TF-SBO reduced the cation concentration to a level less than the detection limit, TF-PKO only showed appreciable sorption capacity (below 30 %) compared to the sorption-inactive normal oils. The order of Ag+ sorption capacity (TF-SBO > TF-PO > TF-PKO) was ascribed to the various levels of unsaturation of fatty acid chains encountered in the lipids, since higher number of sorption-active TF sites is achievable with greater degree of fatty acid unsaturation. On that note, highly unsaturated vegetable oils (such as that of Glycine max) were recommended.