Effects of Ambient Temperature and Magnetic Fields on the Physicochemical Characteristics of Plasma–Activated Water Produced by SDBD

In this study, ambient temperature and an external magnetic field are selected as variable parameters to investigate their effects on PAW. A chromogenic reagent is used to evaluate the diffusion of ROS and . The results show that the concentrations of RONS are reduced when the ambient temperature exceeds 5°C. The RONS concentrations increased in response to an external magnetic field. At an ambient temperature of 5°C and N–S configuration magnetic field of 7 mT, the concentrations of , , and can be up to 33.01, 1311.82, and 314.48 μmol/L after 10 min of treatment. The diffusion rates of ROS and are influenced by ambient temperature, while distribution uniformity is controlled by the magnetic field.