Figure 10
From: Decontamination of water co-polluted by copper, toluene and tetrahydrofuran using lauric acid

Sample compression isotherm measured at the oil water interface. The aqueous and oil phases were obtained starting from samples prepared with 2:1 toluene: 0.25 M lauric in canola oil solution and copper salt solutions (30 mM CuCl2 + 10 mM NaOH or 30 mM CuSO4 + 10 mM NaOH), as described in “Static interfacial tension measurement”. Samples were separated and each phase was re-introduced in the trough, to create a planar interface.