Figure 4
From: Template-free synthesis of polystyrene monoliths for the removal of oil-in-water emulsion

The photos of toluene-in-water emulsions before (B) and after separation (C), and the optical microscopy images of toluene-in-water emulsions before (A) and after separation (D), the UV absorption spectra of the emulsions before and after adsorption (E).