Figure 4 | Scientific Reports

Figure 4

From: Toxicity of ZnO and TiO2 to Escherichia coli cells

Figure 4

Electron spin resonance (ESR) spectra for ZnO and TiO2 nanoparticles with different concentrations (a) with DMPO spin trap, without E. coli (b) DEPMPO spin trap, without E. coli. (c) DMPO spin trap, with E. coli (d) DEPMPO spin trap, with E. coli. In all cases, E. coli concentration was 106 CFU/ml. The spectra of H2O2 solutions are also shown for comparison.

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