Figure 3

Variation of DMPO-OH concentration in Milli-Q water with or without 150 U of SOD after He plasma treatment at various exposure time. Half height of the second peak of the quartet spectrum was chosen to represent DMPO-OH intensity.

Variation of DMPO-OH concentration in Milli-Q water with or without 150 U of SOD after He plasma treatment at various exposure time. Half height of the second peak of the quartet spectrum was chosen to represent DMPO-OH intensity.