Table 2 Changes of ROS concentrations in aqueous solution with N2, He, air and O2 plasma treatments.

From: Synergistic Effect of Atmospheric-pressure Plasma and TiO2 Photocatalysis on Inactivation of Escherichia coli Cells in Aqueous Media

Conditions

N2 microplasma

He microplasma

air microplasma

O2 microplasma

1 min

3 min

5 min

1 min

3 min

5 min

1 min

3 min

5 min

1 min

3 min

5 min

H2O2 (mg/L)

0.352

0.863

1.463

0.782

1.349

2.036

1.325

3.892

5.644

3.947

8.764

14.013

O3 (mg/L)

0.022

0.036

0.047

0.033

0.057

0.080

0.536

0.612

0.700

0.620

0.678

0.758

·OH (mg/L)

0.076

0.119

0.247

0.092

0.163

0.363

0.903

2.093

3.683

1.445

2.517

3.998

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