Figure 4 | Scientific Reports

Figure 4

From: Complete Defluorination of Perfluorinated Compounds by Hydrated Electrons Generated from 3-Indole-acetic-acid in Organomodified Montmorillonite

Figure 4

The first derivative EPR spectra of 3-indole-acetic-acid solution during continuous UV light irradiation in the presence of (a) HDTMA-montmorillonite and DMPO, (b) Na+-montmorillonite and DMPO, (c) DMPO, (d) HDTMA-montmorillonite. The DMPO-H and DMPO-OH lines are indicated by asterisks and circles, respectively. Experimental conditions: the initial concentrations of DMPO, IAA and clay mineral were 20 mM, 1 mM and 2.2 g L−1, respectively; pH was adjusted to 4.0 by adding NaOH and HCl; an arc light source equipped with a 350 W mercury lamp was used as the light source.

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