Fig. 3

Selection of differential components in ozone environment. (A) GC-MS chromatogram stack plot of Pickering emulsion, β-cyclodextrin encapsulation, and crude oil group under ozone conditions. (B) Bar chart of different time intervals under ozone exposure. (C) Heatmap of the 37 differential components. (D) PCA diagram of differential components in ozone environment. (a) PCA plot of differential components in different groups after 10 min of ozone exposure. (b) PCA plot of differential components in different groups after 15 min of ozone exposure. (c) PCA plot of differential components in different groups after 20 min of ozone exposure. (d) Overall PCA plot of differential components in different groups under ozone exposure.