scholarly journals Experimental Studies on Physicochemical Parameters of Water Samples before and after Treatment with a Cold Atmospheric Plasma Jet and its Optical Characterization

2021 ◽  
Vol 2021 ◽  
pp. 1-12
Author(s):  
Hom Bahadur Baniya ◽  
Rajesh Prakash Guragain ◽  
Gobinda Prasad Panta ◽  
Santosh Dhungana ◽  
Ganesh Kuwar Chhetri ◽  
...  
Keyword(s):  
Drinking Water ◽  
Water Samples ◽  
Cold Plasma ◽  
Argon Plasma ◽  
Plasma Jet ◽  
Atmospheric Plasma ◽  
Nitrogen Species ◽  
Cold Atmospheric Plasma ◽  
Jet Interaction ◽  
Argon Plasma Jet

Cold plasma-liquid interaction becomes a growing interdisciplinary area of research involving plasma physics, fluid science, and chemistry. Plasma-liquid interaction has gained more interest over the last many years due to its potential applications in different fields. Cold atmospheric plasma jet is an emerging technology for surface drinking water treatment to improve quality and surface modification that is chemical-free and eco-friendly. Cold plasma treatment of water samples results in changes in turbidity, pH, and conductivity and in the formation of reactive oxygen and nitrogen species (RONS). As a result, plasma-activated water has a different chemical composition than water and can serve as an alternative technique for microbial disinfection. CAPJ has been generated by a high voltage 5 kV and a high frequency 19.56 kHz power supply. The discharge has been characterized by an optical method. To characterize the cold atmospheric pressure argon plasma jet, discharge plume temperature, and electron rotational and vibrational temperature have been determined. Cold atmospheric argon plasma jet produced at atmospheric condition contains high energetic electrons, ions, UV radiation, reactive oxygen, and nitrogen species named as cold plasma which has a wide range of applications in the biomedical industry, as well as in water treatment. Nowadays, researches have been carried out on ozonation through plasma jet interaction with surface drinking water. In this paper, we compare the change in physical and chemical parameters of surface water used for drinking purposes. The significant change in the physical parameters such as pH, turbidity, and electrical conductivity was studied. In addition, the significant changes in the concentration and absorbance of nitrate, ferrous, and chromium ions with respect to treatment time were studied. Our results showed that plasma jet interaction with surface drinking water samples can be useful for the improvement of water quality and an indicator for which reactive species play an important role in plasma sterilization.

scholarly journals A New Cold Plasma Jet: Performance Evaluation of Cold Plasma, Hybrid Plasma and Argon Plasma Coagulation

Plasma ◽  
2018 ◽  
Vol 1 (1) ◽  
pp. 189-200 ◽  
Author(s):  
Lawan Ly ◽  
Sterlyn Jones ◽  
Alexey Shashurin ◽  
Taisen Zhuang ◽  
Warren Rowe ◽  
...  
Keyword(s):  
Cold Plasma ◽  
Ex Vivo ◽  
Argon Plasma Coagulation ◽  
Tumor Resection ◽  
Argon Plasma ◽  
Plasma Jet ◽  
Atmospheric Plasma ◽  
Tissue Temperature ◽  
Plasma Coagulation ◽  
Plasma Energy

The use of plasma energy has expanded in surgery and medicine. Tumor resection in surgery and endoscopy has incorporated the use of a plasma scalpel or catheter for over four decades. A new plasma energy has expanded the tools in surgery: Cold Atmospheric Plasma (CAP). A cold plasma generator and handpiece are required to deliver the CAP energy. The authors evaluated a new Cold Plasma Jet System. The Cold Plasma Jet System consists of a USMI Cold Plasma Conversion Unit, Canady Helios Cold Plasma® Scalpel, and the Canady Plasma® Scalpel in Hybrid and Argon Plasma Coagulation (APC) modes. This plasma surgical system is designed to remove the target tumor with minimal blood loss and subsequently spray the local area with cold plasma. In this study, various operational parameters of the Canady Plasma® Scalpels were tested on ex vivo normal porcine liver tissue. These conditions included various gas flow rates (1.0, 3.0, 5.0 L/min), powers (20, 40, 60 P), and treatment durations (30, 60, 90, 120 s) with argon and helium gases. Plasma length, tissue temperature changes, and depth and eschar injury magnitude measurements resulting from treatment were taken into consideration in the comparison of the scalpels. The authors report that a new cold plasma jet technology does not produce any thermal damage to normal tissue.

scholarly journals The effect of cold plasma on antioxidant enzymes, minerals, and some of the levels of the biochemical parameters in the subjects with type 2 diabetes mellitus samples

2021 ◽  
Vol 4 (2) ◽  
pp. 14
Author(s):  
Danik Martirosyan ◽  
Hossein Mirmiranpour ◽  
Hamid Ghomi ◽  
Mohammad Reza Ashoori ◽  
Alireza Rezaeinezhad
Keyword(s):  
Diabetes Mellitus ◽  
Type 2 Diabetes ◽  
Hydrogen Peroxide ◽  
Type 2 Diabetes Mellitus ◽  
Antioxidant Enzymes ◽  
Cold Plasma ◽  
Argon Plasma ◽  
Plasma Jet ◽  
Argon Plasma Jet

Introduction: Hyperglycemia in people with diabetes mellitus and its lack of control are associated with irreversible consequences. Glycation of proteins and enzymes, especially antioxidant enzymes in uncontrolled diabetes mellitus, affects these consequences. Consumption of bioactive compounds containing antioxidants and minerals as well as the use of adjunct therapies, such as cold atmospheric plasma therapy, can be effective in preventing and controlling the consequences of diabetes mellitus.Objective: In this research, we investigated whether cold plasma treatment of diabetic samples was effective in altering the activity of oxidative enzymes, some biochemical elements, and biochemical parameters.Methods: Thirty individuals with type 2 diabetes mellitus and 30 healthy individuals, as controls, participated in the study. The samples were exposed to cold argon plasma jet for 10 minutes (by a 10 kHz pulsed DC power supply with an amplitude up to 20.0 kV). The following contents of the serum samples of all participants were evaluated according to the instructions of the used kits before and after the cold argon plasma jet treatment: the activity of catalase, superoxide dismutase, and glutathione peroxidase enzymes; the concentration of glucose, hydrogen peroxide, and selenium binding protein 1 (as an indicator of blood selenium); and the concentration of copper, zinc, iron, and magnesium.Results: The activity of antioxidant enzymes and minerals significantly increased in diabetic samples treated with cold plasma (P value < 0.05). No significant changes were observed in the concentrations of glucose, hydrogen peroxide, or selenium binding protein 1 in diabetic samples treated with cold plasma.Conclusions: Using cold argon plasma jet as an adjunct method, which will reduce the glycation of enzymes and improve some minerals, can reduce the risk of diabetes complications in patients with diabetes mellitus.Keywords:Antioxidant enzymes, Cold plasma, Diabetes mellitus, Minerals. 

Assessment of Mutations Induced by Cold Atmospheric Plasma Jet Treatment Relative to Known Mutagens in Escherichia coli

Mutagenesis ◽  
2021 ◽  
Author(s):  
Bethany L Patenall ◽  
Hollie J Hathaway ◽  
Maisem Laabei ◽  
Amber E Young ◽  
Naing T Thet ◽  
...  
Keyword(s):  
Escherichia Coli ◽  
Dna Damage ◽  
Dna Fragmentation ◽  
Ames Test ◽  
Plasma Jet ◽  
Atmospheric Plasma ◽  
Nitrogen Species ◽  
Cold Atmospheric Plasma ◽  
X Irradiation ◽  
Mutagenic Effects

Abstract The main bactericidal components of cold atmospheric plasma (CAP) are thought to be reactive oxygen and nitrogen species (RONS) and UV radiation, both of which have the capacity to cause DNA damage and mutations. Here, the mutagenic effects of CAP on Escherichia coli were assessed in comparison to X- and UV-irradiation. DNA damage and mutagenesis were screened for using a diffusion-based DNA fragmentation assay and modified Ames test respectively. Mutant colonies obtained from the latter were quantitated and sequenced. CAP was found to elicit a similar mutation spectrum to X-irradiation, that did not resemble that for UV implying that CAP produced RONS are more likely the mutagenic component of CAP. CAP treatment was also shown to promote resistance to the antibiotic ciprofloxacin. Our data suggest that CAP treatment has mutagenic effects that may have important phenotypic consequences.

scholarly journals Tiny Cold Atmospheric Plasma Jet for Biomedical Applications

Processes ◽  
2021 ◽  
Vol 9 (2) ◽  
pp. 249
Author(s):  
Zhitong Chen ◽  
Richard Obenchain ◽  
Richard E. Wirz
Keyword(s):  
Biomedical Applications ◽  
Plasma Jet ◽  
Discharge Voltage ◽  
Plasma Jets ◽  
Atmospheric Plasma ◽  
Physical Parameters ◽  
Cold Atmospheric Plasma ◽  
Water Metal ◽  
Plasma Probe ◽  
Jet Nozzle

Conventional plasma jets for biomedical applications tend to have several drawbacks, such as high voltages, high gas delivery, large plasma probe volume, and the formation of discharge within the organ. Therefore, it is challenging to employ these jets inside a living organism’s body. Thus, we developed a single-electrode tiny plasma jet and evaluated its use for clinical biomedical applications. We investigated the effect of voltage input and flow rate on the jet length and studied the physical parameters of the plasma jet, including discharge voltage, average gas and subject temperature, and optical emissions via spectroscopy (OES). The interactions between the tiny plasma jet and five subjects (de-ionized (DI) water, metal, cardboard, pork belly, and pork muscle) were studied at distances of 10 mm and 15 mm from the jet nozzle. The results showed that the tiny plasma jet caused no damage or burning of tissues, and the ROS/RNS (reactive oxygen/nitrogen species) intensity increased when the distance was lowered from 15 mm to 10 mm. These initial observations establish the tiny plasma jet device as a potentially useful tool in clinical biomedical applications.

Particle densities and non-equilibrium in a low-pressure argon plasma jet

1994 ◽  
Vol 14 (3) ◽  
pp. 251-275 ◽  
Author(s):  
Steven P. Fusselman ◽  
Hirotsugu K. Yasuda
Keyword(s):  
Argon Plasma ◽  
Plasma Jet ◽  
Low Pressure ◽  
Argon Plasma Jet ◽  
Non Equilibrium

Influence of Additive Gas on Electrical and Optical Characteristics of Non-equilibrium Atmospheric Pressure Argon Plasma Jet

2011 ◽  
Vol 13 (5) ◽  
pp. 575-582 ◽  
Author(s):  
Xiaomeng Fei ◽  
Shin-ichi Kuroda ◽  
Yuki Kondo ◽  
Tamio Mori ◽  
Katsuhiko Hosoi
Keyword(s):  
Atmospheric Pressure ◽  
Argon Plasma ◽  
Plasma Jet ◽  
Optical Characteristics ◽  
Argon Plasma Jet ◽  
Non Equilibrium
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