Assessment of the Physicochemical Properties and Biological Effects of Water Activated by Non‐thermal Plasma Above and Beneath the Water Surface. Issue 5 (28th December 2014)

• Record Type: Journal Article
• Authors: Tian, Ying; Ma, Ruonan; Zhang, Qian; Feng, Hongqing; Liang, Yongdong; Zhang, Jue; Fang, Jing
• Is Part Of: Plasma processes and polymers. Volume 12:Issue 5(2015:May.)
• Page Start: 439
• Page End: 449
• Publication Date: 2014-12-28
• Subjects: Plasma polymerization -- Periodicals; Plasma-enhanced chemical vapor deposition -- Periodicals; Plasma chemistry -- Periodicals
• DOI: 10.1002/ppap.201400082
• Languages: English
• ISSNs: 1612-8850

Abstract

<abstract abstract-type="main" xml:lang="en"> <title> <x xml:space="preserve">Abstract</x> </title> <sec id="ppap201400082-sec-0001" sec-type="section"> <p>A direct current atmospheric pressure cold plasma microjet (PMJ) was used to produce plasma activated water (PAW) in two generation modes above (PAW‐A) and beneath (PAW‐B) the water surface. The physicochemical characteristics and biological effects of them were measured respectively. Results showed that PAW‐B exhibited stronger disinfection efficiency than PAW‐A, which was associated with ORP and conductivity, but not pH value, temperature, H₂O₂, NO₃⁻ or NO₂⁻. Furthermore, the cell membrane integrity and membrane potential of <italic>S. aureus</italic> were destroyed more severely by PAW‐B. More importantly, a significant increase of intracellular ROS was induced by PAW‐B, which was supposed to contribute most to the sterilization. This work provides valuable guidance for the production and wide applications of PAW.<inline-graphic xlink:href="ark:/27927/pgjn7sx95c" content-type="ppap201400082-gra-0001" xlink:type="simple" xmlns:xlink="http://www.w3.org/1999/xlink" /></p> </sec> </abstract>