Transport and accumulation of plasma generated species in aqueous solution

Verlackt, Christof; Boxem, Wilma Van; Bogaerts, Annemie

doi:10.1039/c7cp07593f

Cited by 122 publications

(123 citation statements)

References 75 publications

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“…The flow pattern is shown in Figure 5e, where the flow pattern in the liquid is clearly visible in the density profiles of dissolved species with high Henry's constant. [ 135,136 ] Following the liquid flow pattern shown in Figure 5d, the aqueous plasma active species initially remained at the plasma‐liquid interface and accumulated in the reverse vortex. They also flow back to the liquid surface, following the flow pattern, after which they return into the bulk liquid.…”

Section: Transport Of Reactive Agentsmentioning

confidence: 99%

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Cold atmospheric pressure plasmas in dermatology: Sources, reactive agents, and therapeutic effects

Liu

Zhang

et al. 2020

Plasma Processes & Polymers

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Recently, cold atmospheric pressure plasmas (CAPs) have provided many new opportunities in dermatology by providing a multimodal action of reactive agents (RA). This review critically examines the generation, transport, and physical effects induced by CAPs in dermatologic treatments. We introduce the most suitable plasma sources, which provide a multitude of physical effects on the skin without any electric or thermal shocks. The mechanisms of generation and transport of the key reactive species are introduced and examined from the viewpoint of their applications in dermatology. Special attention is paid to study the “plasmaporation” effect, which enables RA penetration through healthy and damaged skin. Plausible physical mechanisms involved in the CAP treatment of some of the most common skin diseases are analyzed.

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Section: Transport Of Reactive Agentsmentioning

confidence: 99%

“…They also flow back to the liquid surface, following the flow pattern, after which they return into the bulk liquid. [ 136 ] The gaseous plasma active species with low Henry's constant accumulated in the gas phase just above the plasma‐liquid interface, leading to a much lower concentration in the liquid phase.…”

Section: Transport Of Reactive Agentsmentioning

confidence: 99%

Cold atmospheric pressure plasmas in dermatology: Sources, reactive agents, and therapeutic effects

Liu

Zhang

et al. 2020

Plasma Processes & Polymers

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“…NTP–liquid reactions—formation of reactive species at different sections (Liu et al., ; Verlackt et al., ).…”

Section: Ntp–liquid Interactionsmentioning

confidence: 99%

“…From Figure 2, it can be inferred that all the stable high-concentration reactive species in liquid are mainly produced by the diffusion process. As the experimental validation of the distribution and penetration (Liu et al, 2016;Verlackt et al, 2018). Anderson (2016) HNO 2 and HNO 3 2.5 × 10 −5 Anderson (2016) characteristics of reactive species is difficult to measure, these parameters and mass transfer kinetics are mostly evaluated using numerical simulation techniques (Bie et al, 2016;Chen, Tao, et al, 2014;Jiang et al, 2016;Thagard et al, 2016;Yusupov et al, 2013).…”

Section: Ntp-liquid Interactionsmentioning

confidence: 99%

Nonthermal Plasma–Liquid Interactions in Food Processing: A Review

Perinban

Orsat

Raghavan

2019

Comp Rev Food Sci Food Safe

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Nonthermal processing methods are often preferred over conventional food processing methods to ensure nutritional quality. Nonthermal plasma (NTP) is a new field of nonthermal processing technology and seeing increased interest for application in food preservation. In food applications of NTP, liquid interactions are the most prevalent. The NTP reactivity and product storability are altered during this interaction. The water activated by NTP (plasma‐activated water [PAW]) has gained considerable attention during recent years as a potential disinfectant in fruits and vegetable washing. However, detailed understanding of the interactions of NTP reactive species with food nutritional components in the presence of water and their stability in food is required to be explored to establish the potential of this emerging technology. Hence, the main objective of this review is to give a complete overview of existing NTP–liquid interactions. Further, their microbial inactivation mechanisms and the effects on food quality are discussed in detail. Most of the research findings have suggested the successful application of NTP and PAW for microbial inactivation and food preservation. Still, there are some research gaps identified and a complete analysis of the stability of plasma reactive species in food is still missing. By addressing these issues, along with the available research output in this field, it is possible that NTP can be successfully used as a food decontamination method in the near future.

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“…The extended timescale may be long enough for these reactive species to reach the surface of a target (biological material) or a liquid medium and activate that surface despite the majority of primary species having already reacted away. Results from the modeling of argon plasma jets onto water by Verlackt et al showed that aqueous reactive species can either originate from the gas‐phase plasma or be formed at the liquid interface. They found that densities of H 2 O 2aq , HNO 2aq /NO 2 − aq and NO 3 − aq increase in solution as a function of time, while the densities of O 3aq , HO 2aq /O 2 − aq , and ONOOH aq /ONOO − aq quickly saturate.…”

Section: Introductionmentioning

confidence: 99%

Helium plasma jet interactions with water in well plates

Mohades

Lietz

Kruszelnicki

et al. 2019

Plasma Processes & Polymers

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Plasma activation of liquids or cell cultures is a method for investigating the consequences of plasma produced reactive oxygen and nitrogen species (RONS) on living systems. The reproducible transfer of RONS, ions, electrons, and photons to the liquid is critical for determining reaction mechanisms and biological outcomes, and depends strongly on system parameters. A common in vitro method of plasma treatment of cells is a plasma jet directed into a well plate filled (or partially filled) with a liquid cell growth media. This method of treatment intrinsically has several environmental and geometrical factors that could lead to variability in the activation of the media. Uncontrolled or unreported geometrical and environmental factors that affect this transfer can, therefore, influence the reproducibility of measurements. In this paper, results from a numerical modeling investigation of a pulsed helium plasma jet interacting with water in a well plate are discussed while varying the height of the well‐plate rim. The height of the rim changes gas flow patterns, the ratio of He‐to‐air, and the water vapor content in the gas layer above the liquid. With a low rim, gas flowing from the jet stagnates on‐axis and flows radially outward with few vortices that recirculate reactants. With high rims, the gas flow is dominated by vortices and recirculation. With a low rim, the ionization wave (IW) from the jet strikes the liquid and proceeds as a surface IW across the water. With higher rims, the densities of helium and water vapor are higher above the liquid, which results in a volumetric propagation of the IW, initially producing higher densities of H2, HO2, OH, and H2O2. The end result is that for otherwise identical conditions, the densities of solvated H2O2aq and select reactive nitrogen species increase with rim height due to the vortices that recirculate reactants.

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Transport and accumulation of plasma generated species in aqueous solution

Cited by 122 publications

References 75 publications

Cold atmospheric pressure plasmas in dermatology: Sources, reactive agents, and therapeutic effects

Cold atmospheric pressure plasmas in dermatology: Sources, reactive agents, and therapeutic effects

Nonthermal Plasma–Liquid Interactions in Food Processing: A Review

Helium plasma jet interactions with water in well plates

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