Activation of Aqueous Solutions Using a Multi-Spark Ring Discharge with Gas Injection in the Discharge Gap

IF 0.9 4区物理与天体物理 Q4 PHYSICS, FLUIDS & PLASMAS Plasma Physics Reports Pub Date : 2024-01-27 DOI:10.1134/s1063780x23601037

V. V. Gudkova, D. A. Razvolyaeva, I. V. Moryakov, A. M. Anpilov

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Abstract

The paper presents the results of studies of the formation of reactive oxygen and nitrogen species in Milli-Q® deionized water (electrical conductivity of ≤0.1 µS/cm) under the influence of a multi-spark pulse discharge with gas injection into the interelectrode space. The discharge is a set of microplasma formations in a multiphase medium, for which the specific energy input is estimated. The influence of injected gases (argon, air) on the formation of a plasma discharge in the interelectrode space and long-lived chemical compounds: hydrogen peroxide, nitrite ions and nitrate ions is analyzed. The variation of the exposure duration to water from 2 to 10 min leads to a change in its chemical composition and electrical conductivity properties, but has virtually no effect on the characteristics and duration of the breakdown stage of the discharge. At the same time, changes in the concentrations of hydrogen peroxide, nitrite ions and nitrate ions are recorded within 1 h after the termination of the plasma exposure. Sputtering of stainless steel electrodes is detected, which is about 1 mg/min and leads in some cases to the formation of an insoluble precipitate. The data obtained allow the optimization of the effect of plasma-activated liquid on plants and planting material.

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利用在放电间隙注入气体的多火花环放电活化水溶液

摘要本文介绍了在向电极间隙注入气体的多火花脉冲放电影响下，Milli-Q® 去离子水（电导率≤0.1 µS/cm）中活性氧和氮物种形成的研究结果。放电是在多相介质中形成的一组微等离子体，对其输入的比能量进行了估算。分析了注入气体（氩气、空气）对在电极间隙形成等离子体放电以及长寿命化合物（过氧化氢、亚硝酸根离子和硝酸根离子）的影响。水的暴露时间从 2 分钟到 10 分钟的变化会导致其化学成分和导电特性的改变，但对放电击穿阶段的特征和持续时间几乎没有影响。同时，在等离子体暴露结束后 1 小时内，记录到过氧化氢、亚硝酸根离子和硝酸根离子浓度的变化。检测到不锈钢电极的溅射，溅射量约为 1 毫克/分钟，在某些情况下会形成不溶性沉淀。根据所获得的数据，可以优化等离子激活液对植物和种植材料的影响。

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来源期刊

Plasma Physics Reports 物理-物理：流体与等离子体

CiteScore

1.90

自引率

36.40%

发文量

104

审稿时长

4-8 weeks

期刊介绍： Plasma Physics Reports is a peer reviewed journal devoted to plasma physics. The journal covers the following topics: high-temperature plasma physics related to the problem of controlled nuclear fusion based on magnetic and inertial confinement; physics of cosmic plasma, including magnetosphere plasma, sun and stellar plasma, etc.; gas discharge plasma and plasma generated by laser and particle beams. The journal also publishes papers on such related topics as plasma electronics, generation of radiation in plasma, and plasma diagnostics. As well as other original communications, the journal publishes topical reviews and conference proceedings.