Table 1. Changes in the physicochemical properties of pilot-scale plasma-activated water during plasma discharge

Plasma discharge time (min)	pH	Oxidation reduction potential (mV)	Electrical conductivity (µS/cm)
0	6.1±0.3a	258.0±21.1a	5.0±1.3a
10	3.1±0.1b	432.3±17.3b	338.5±9.8b
20	2.8±0.1c	473.7±18.9c	919.5±27.6c
30	2.6±0.1d	503.6±20.3c	1,443.2±43.8d
40	2.6±0.1d	503.6±16.2c	1,805.3±52.7e
50	2.5±0.1de	499.2±16.4c	2,286.0±66.5f
60	2.4±0.1e	508.0±18.2c	2,961.6±87.4g

Different lowercase letters within each column indicate significant differences among plasma discharge times (p>0.05).