聚乙烯醇
化学
分析化学(期刊)
辐照
扩散
大气压力
碘
色谱法
有机化学
热力学
海洋学
物理
地质学
核物理学
作者
Nguyen Trung Tran,Min Hu,Tomohiro Ogasawara,Yuji Iwata,Haruka Suzuki,Jin Su,Masafumi Akiyoshi,Hirotaka Toyoda,Hiroto Matsuura
出处
期刊:Plasma Science & Technology
[IOP Publishing]
日期:2023-01-18
卷期号:25 (3): 035404-035404
标识
DOI:10.1088/2058-6272/ac9891
摘要
Abstract This study proposes polyvinyl alcohol–potassium iodide (PVA–KI) as a novel gel chemical probe. The probe uses the reactions among PVA, KI, water, borax, and oxidative species to visualize the distribution of reactive species. This method provides information regarding the distribution of reactive species by coloration on the gel surface. The effects of the surrounding gas phase on the distribution and diffusion of the reactive species are also investigated using the PVA–KI gel probe. Further, the relationship between the irradiation distance and reactive species diffusion is determined on the surface of the PVA–KI probe with and without plastic shielding. Adjusting the irradiation distance appropriately leads to an increase in the modified area as detected by the PVA–KI gel probe analysis. The relative concentration distributions of the reactive species are also obtained from visualized color distributions measured using a colorimeter. Furthermore, reactive species generation by long-scale line plasma is confirmed by the color reaction on the PVA–KI gel surface, with a greater area being covered by an atmospheric-pressure pulsed microwave line plasma source.
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