Mass Spectrometric Detection of Gaseous Hydrogen Peroxide in Ambient Air Using Dielectric Barrier Discharge as an Excitation Source

2009 ◽  
Vol 38 (6) ◽  
pp. 520-521 ◽  
Author(s):  
Lee Chuin Chen ◽  
Hiroaki Suzuki ◽  
Kunihiko Mori ◽  
Osamu Ariyada ◽  
Kenzo Hiraoka
Keyword(s):  
Hydrogen Peroxide ◽  
Dielectric Barrier Discharge ◽  
Barrier Discharge ◽  
Ambient Air ◽  
Mass Spectrometric ◽  
Gaseous Hydrogen ◽  
Mass Spectrometric Detection ◽  
Excitation Source ◽  
Dielectric Barrier

scholarly journals A low power flexible dielectric barrier discharge disinfects surfaces and improves the action of hydrogen peroxide

2021 ◽  
Vol 11 (1) ◽  
Author(s):  
Sophia Gershman ◽  
Maria B. Harreguy ◽  
Shurik Yatom ◽  
Yevgeny Raitses ◽  
Phillip Efthimion ◽  
...  
Keyword(s):  
Hydrogen Peroxide ◽  
Dielectric Barrier Discharge ◽  
Atmospheric Pressure ◽  
Reactive Nitrogen Species ◽  
Barrier Discharge ◽  
Ambient Air ◽  
Hydrogen Peroxide Solution ◽  
Reactive Nitrogen ◽  
Nitrogen Species ◽  
Dielectric Barrier

AbstractThere is an urgent need for disinfection and sterilization devices accessible to the public that can be fulfilled by innovative strategies for using cold atmospheric pressure plasmas. Here, we demonstrate a successful novel combination of a flexible printed circuit design of a dielectric barrier discharge (flex-DBD) with an environmentally safe chemical reagent for surface decontamination from bacterial contaminants. Flex-DBD operates in ambient air, atmospheric pressure, and room temperature without any additional gas flow at a power density not exceeding 0.5 W/cm2. The flex-DBD activation of a 3% hydrogen peroxide solution results in the reduction in the bacterial load of a surface contaminant of > 6log10 in 90 s, about 3log10 and 2log10 better than hydrogen peroxide alone or the flex-DBD alone, respectively, for the same treatment time. We propose that the synergy between plasma and hydrogen peroxide is based on the combined action of plasma-generated OH· radicals in the hydrogen peroxide solution and the reactive nitrogen species supplied by the plasma effluent. A scavenger method verified a significant increase in OH· concentration due to plasma treatment. Novel in-situ FTIR absorption spectra show the presence of O3, NO2, N2O, and other nitrogen species. Ozone dissolving in the H2O2 solution can effectively generate OH· through a peroxone process. The addition of the reactive nitrogen species increases the disinfection efficiency of the hydroxyl radicals and other oxygen species. Hence, plasma activation of a low concentration hydrogen peroxide solution, using a hand-held flexible DBD device results in a dramatic improvement in disinfection.

scholarly journals A low power flexible dielectric barrier discharge disinfects surfaces and improves the action of hydrogen peroxide

2020 ◽  
Author(s):  
Sophia Gershman ◽  
Maria Belen Harreguy Alfonso ◽  
Shurik Yatom ◽  
Yevgeny Raitses ◽  
Phillip Efthimion ◽  
...  
Keyword(s):  
Hydrogen Peroxide ◽  
Low Power ◽  
Dielectric Barrier Discharge ◽  
Barrier Discharge ◽  
Treatment Time ◽  
Bacterial Load ◽  
Ambient Air ◽  
Dramatic Improvement ◽  
Dielectric Barrier ◽  
Surface Disinfection

AbstractThere is an urgent need for disinfection and sterilization devices accessible to the public that can be fulfilled by innovative strategies for using cold atmospheric pressure plasmas. Here we explore and evaluate an approach combining a flexible printed circuit design of a dielectric barrier discharge (DBD) with an environmentally safe chemical reagent for surface decontamination from bacterial contaminants. The device operates in ambient air without any additional gas flow at a power density of about 0.5 W/cm2. Using a 3% hydrogen peroxide solution as a model reagent we demonstrate improved reduction in the bacterial load of a surface contaminant of >6log10 in 90 seconds, about 3log10 and 2log10 faster compared to hydrogen peroxide alone and the flexible DBD alone, respectively, for the same treatment time. The synergistic action of the plasma bioactive properties and hydrogen peroxide result in a dramatic improvement of surface disinfection. This opens new possibilities for using the low power flexible DBD plasma sources for surface disinfection and decontamination.

scholarly journals A Coaxial Dielectric Barrier Discharge Reactor for Treatment of Winter Wheat Seeds

2020 ◽  
Vol 10 (20) ◽  
pp. 7133
Author(s):  
Thalita M. C. Nishime ◽  
Nicola Wannicke ◽  
Stefan Horn ◽  
Klaus-Dieter Weltmann ◽  
Henrike Brust
Keyword(s):  
Winter Wheat ◽  
Dielectric Barrier Discharge ◽  
Barrier Discharge ◽  
Ambient Air ◽  
Water Contact ◽  
Dielectric Barrier ◽  
Argon Discharge ◽  
Agricultural Applications ◽  
A Minor ◽  
Wheat Seeds

Non-thermal atmospheric pressure plasmas have been recently explored for their potential usage in agricultural applications as an interesting alternative solution for a potential increase in food production with a minor impact on the ecosystem. However, the adjustment and optimization of plasma sources for agricultural applications in general is an important study that is commonly overlooked. Thus, in the present work, a dielectric barrier discharge (DBD) reactor with coaxial geometry designed for the direct treatment of seeds is presented and investigated. To ensure reproducible and homogeneous treatment results, the reactor mechanically shakes the seeds during treatment, and ambient air is admixed while the discharge runs. The DBD, operating with argon and helium, produces two different chemically active states of the system for seed modification. The temperature evolution was monitored to guarantee a safe manipulation of seeds, whereas a physiological temperature was assured by controlling the exposure time. Both treatments led to a remarkable increase in wettability and acceleration in germination. The present study showed faster germination acceleration (60% faster after 24 h) and a lower water contact angle (WCA) (82% reduction) for winter wheat seeds by using the described argon discharge (with air impurities). Furthermore, the treatment can be easily optimized by adjusting the electrical parameters.

scholarly journals Electrode configurations and non-uniform dielectric barrier discharge properties

2009 ◽  
Vol 22 (2) ◽  
pp. 217-226
Author(s):  
Peter Dineff ◽  
Dilyana Gospodinova
Keyword(s):  
Dielectric Barrier Discharge ◽  
Atmospheric Pressure ◽  
Barrier Discharge ◽  
Ambient Air ◽  
Metallic Plate ◽  
Dielectric Barrier ◽  
Plate Electrode ◽  
Dielectric Surfaces ◽  
Non Thermal Plasma ◽  
Burning Mode

Interesting types of AC discharges in ambient air at atmospheric pressure for the generation of non-thermal plasma at/on dielectric surfaces were investigated. Pin-to-plane dielectric barrier discharge (PTP-DBD) was sustained in the electrode configurations combining electrode components of both corona and DBD - metallic pins, or triangle spikes electrode, situated single- or double-in-line and metallic plate electrode covered with a dielectric barrier. It was investigated experimentally and theoretically the burning mode of a PTP-DBD in ambient air at atmospheric pressure. The PTP-DBD behavior with single- or double-in-line spikes high voltage electrode was discussed. The PTP-DBD is a new DBD-based discharge. .

scholarly journals The effect of ambient air plasma generated by coplanar and volume dielectric barrier discharge on the surface characteristics of polyamide foils

Vacuum ◽  
2021 ◽  
Vol 183 ◽  
pp. 109887
Author(s):  
Vlasta Štěpánová ◽  
Petra Šrámková ◽  
Slavomír Sihelník ◽  
Monika Stupavská ◽  
Jana Jurmanová ◽  
...  
Keyword(s):  
Dielectric Barrier Discharge ◽  
Barrier Discharge ◽  
Surface Characteristics ◽  
Ambient Air ◽  
Air Plasma ◽  
Dielectric Barrier

Synthesis of Hydrogen Peroxide Using Dielectric Barrier Discharge Associated with Fibrous Materials

2010 ◽  
Vol 30 (4) ◽  
pp. 489-502 ◽  
Author(s):  
F. Thevenet ◽  
J. Couble ◽  
M. Brandhorst ◽  
J. L. Dubois ◽  
E. Puzenat ◽  
...  
Keyword(s):  
Hydrogen Peroxide ◽  
Dielectric Barrier Discharge ◽  
Barrier Discharge ◽  
Fibrous Materials ◽  
Dielectric Barrier
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