To investigate the differences between molecular deposition filming flooding agent and mono-quaternaries in interfacial interactions, microelectrophoresis method was applied in studying the electrostatic behavior of kaolinite/water and aspaltene p-xylene solution/water interfacial action.

The reaction of phenolized lignin with quaternary amine salt was investigated by orthogonal test.

The content of glycyrrhetate was assayed by TCLS.

Separation of glycyrrhetate by aqueous two-phase extraction system;