Development of an ionization method using hydrogenated plasma for mass analysis of surface adhesive compounds

Aida, Masao; Iwai, Toshiaki; Okamoto, Yuki; Miyahara, Hidekazu; Seto, Yasuo; Okino, Akitoshi

doi:10.1039/c7ja00314e

Cited by 4 publications

(2 citation statements)

References 30 publications

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“…Additionally, because NTP technology (e.g., low-temperature atmospheric plasma) can free the plasma generation system of vacuum chambers as well as generate plasma containing abundant reactive species (e.g., in humid air-driven plasma, reactive oxygen species: O, O 2 − , O 3 and OH, and reactive nitrogen species including NO, NO 2 , etc. [3,4]) at low temperatures (even room temperature), various forms of NTPs have been developed for a multitude of scientific and industrial applications, including disinfection and sterilization [4][5][6], medicine [7][8][9], chemical analysis [10][11][12], thin film deposition [13,14], waste purification [15][16][17], agriculture [18][19][20], and surface modification [10,21,22]. Among these, dielectric barrier discharge (DBD) plasma is the most promising and suitable plasma source for the abatement of indoor air pollutants owing to its superior characteristics, including its capacity for uniform large-volume plasma generation, simple configuration, lower energy consumption, the effectiveness of multiple pollutant decomposition, bactericidal and disinfectant effects, and operation under ambient conditions, as demonstrated in numerous studies [15,[23][24][25][26][27][28].…”

Section: Introductionmentioning

confidence: 99%

Design and Characterization of an Upscaled Dielectric Barrier Discharge-Based Ten-Layer Plasma Source for High-Flow-Rate Gas Treatment

Xu,

Mori,

Liu

et al. 2023

Applied Sciences

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Dielectric barrier discharge (DBD)-based technology is considered a promising alternative for controlling indoor air pollutants. However, its limited processing capacity and lack of design techniques have restricted its use in practical applications. This paper introduces a methodology for designing upscaled DBD reactors with a processing capacity of up to 1000 L/min for treating high-flow-rate gases to mitigate indoor air pollution. A ten-layer high-flow-rate DBD reactor was constructed, with fundamental characterizations, including electrical and spectroscopic measurements, conducted to verify the feasibility of the proposed methodology. In particular, the flow paths of the ten-layer DBD reactor were optimized by incorporating an air diffuser and perforated metal plates, all without significant modifications. Computational fluid dynamics simulations showed a remarkably improved velocity uniformity (0.35 m/s to 0.04 m/s, as evidenced by the velocity standard deviation) in the 10 flow channels. These simulation results were consistent with the experimental results, wherein the velocity standard deviation reduced from 1.38 m/s to 0.13 m/s. Moreover, multi-gas plasma ignition for up to six gas species and high-flow-rate plasma generation of up to 1000 L/min were achieved. These results provide the foundation for developing DBD technologies for practical applications in high-flow-rate gas treatment, particularly for controlling indoor air pollution.

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Section: Introductionmentioning

confidence: 99%

Design and Characterization of an Upscaled Dielectric Barrier Discharge-Based Ten-Layer Plasma Source for High-Flow-Rate Gas Treatment

Xu,

Mori,

Liu

et al. 2023

Applied Sciences

Self Cite

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“…This has significantly expanded the range of plasma applications. Applications of plasma, such as in disinfection [3] and hemostasis [4], wound healing [5], analysis of surface-adhesive compounds [6], and mobile on-site analytical devices [7], are examples that take advantage of the characteristics of atmospheric pressure and lowtemperature generation of plasma. A simple technique to improve the effectiveness of plasma treatment, such as surface treatment, involves increasing the energy input during plasma generation [8].…”

Section: Introductionmentioning

confidence: 99%

Influence of Controlling Plasma Gas Species and Temperature on Reactive Species and Bactericidal Effect of the Plasma

et al. 2021

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In this study, plasma gas species and temperature were varied to evaluate the reactive species produced and the bactericidal effect of plasma. Nitrogen, carbon dioxide, oxygen, and argon were used as the gas species, and the gas temperature of each plasma was varied from 30 to 90 °C. Singlet oxygen, OH radicals, hydrogen peroxide, and ozone generated by the plasma were trapped in a liquid, and then measured. Nitrogen plasma produced up to 172 µM of the OH radical, which was higher than that of the other plasmas. In carbon dioxide plasma, the concentration of singlet oxygen increased from 77 to 812 µM, as the plasma gas temperature increased from 30 to 90 °C. The bactericidal effect of carbon dioxide and nitrogen plasma was evaluated using bactericidal ability, which indicated the log reduction per minute. In carbon dioxide plasma, the bactericidal ability increased from 5.6 to 38.8, as the temperature of the plasma gas increased from 30 to 90 °C. Conversely, nitrogen plasma did not exhibit a high bactericidal effect. These results demonstrate that the plasma gas type and temperature have a significant influence on the reactive species produced and the bactericidal effect of plasma.

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Development of a High-Efficiency Decomposition Technology for Volatile Chemical Warfare Agent Sarin Using Dielectric Barrier Discharge

Iwai

Inoue

Kakegawa

et al. 2020

Plasma Chem Plasma Process

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Development of an ionization method using hydrogenated plasma for mass analysis of surface adhesive compounds

Abstract: This paper proposes an ionization method that adds a small amount of hydrogen to the helium plasma to generate protons in the sample ionization source. Using this, mass spectrometry was performed on adhesive compounds.

Cited by 4 publications

References 30 publications

Design and Characterization of an Upscaled Dielectric Barrier Discharge-Based Ten-Layer Plasma Source for High-Flow-Rate Gas Treatment

Design and Characterization of an Upscaled Dielectric Barrier Discharge-Based Ten-Layer Plasma Source for High-Flow-Rate Gas Treatment

Influence of Controlling Plasma Gas Species and Temperature on Reactive Species and Bactericidal Effect of the Plasma

Development of a High-Efficiency Decomposition Technology for Volatile Chemical Warfare Agent Sarin Using Dielectric Barrier Discharge

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