Naphthenic Acids: Formation, Role in Emulsion Stability, and Recent Advances in Mass Spectrometry-Based Analytical Methods

Figure 1

Representation of emulsions in which water is the continuous phase (a), oil is the continuous phase (b), and multiple systems (c, d). (a) Oil-in-water (O/W). (b) Water-in-oil (W/O). (c) Water-in-oil-in-water (W/O/W). (d) Oil-in-water-in-oil (O/W/O).

(a)

(b)

(c)

(d)