Figure 7

The fluorescence spectra of the hTPA solutions (inset) and the time-varying concentrations of \(\cdot {\text{OH}}\) generated by the developed device at 4 kV/20 kHz.

The fluorescence spectra of the hTPA solutions (inset) and the time-varying concentrations of \(\cdot {\text{OH}}\) generated by the developed device at 4 kV/20 kHz.