Selective generation of nitrate and nitrite in plasma activated water and its physicochemical parameters analysis

In this work, a surface dielectric barrier discharge-based cold plasma source is reported with the selective generation of Nitrate and Nitrite in the Plasma Activated Water (PAW). The physicochemical properties of the generated PAW have been analyzed on different process parameters such as applied voltage, frequency, treatment time, and volume of water. The generated PAW has a low pH value, with high conductivity, nitrite concentration, nitrate concentration, and nil concentration of hydrogen peroxide. It is inferred that the PAW is enriched with Nitrate and Nitrite, once hydrogen peroxide is nil in the activated water. This type of PAW can be highly useful for agricultural applications.