Skip to main content
. 2019 Dec 3;4(25):21197–21203. doi: 10.1021/acsomega.9b02627

Figure 2.

Figure 2

Statistical results of ESR spectra of hydroxyl and DPPH free radicals based on as-prepared PAW (red), various 1 day aged PAW and DI water (black) for reference. (A) Hydroxyl free radicals. (B) DPPH free radicals. Green: slowly frozen/slowly melted PAW-1-1; blue: slowly frozen/quickly melted PAW-2-1; pink: quickly frozen/slowly melted PAW-3-1; orange: quickly frozen/quickly melted PAW-4-1; yellow: super-quickly frozen/slowly melted PAW-5-1; purple: super-quickly frozen/quickly melted PAW-6-1. *, p < 0.05; **, p < 0.01; ***, p < 0.001.