Selectively enhanced molecular emission spectra of benzene, toluene and xylene with nano-MnO2 in atmospheric ambient temperature dielectric barrier discharge

2015 ◽  
Vol 7 (2) ◽  
pp. 400-404 ◽  
Author(s):  
Xue Jiang ◽  
Chenghui Li ◽  
Zhou Long ◽  
Xiandeng Hou
Keyword(s):  
Ambient Temperature ◽  
Dielectric Barrier Discharge ◽  
Barrier Discharge ◽  
Emission Spectra ◽  
Field Analysis ◽  
Dielectric Barrier ◽  
Molecular Emission ◽  
Molecular Radical ◽  
Benzene Toluene

In this work, nano-MnO2 was used to selectively enhance molecular/radical emission spectra in an atmospheric ambient temperature dielectric barrier discharge, based on which a portable spectrometer was developed for potential in-field analysis of trace benzene, toluene and xylene.

A novel liquid chromatography detector based on a dielectric barrier discharge molecular emission spectrometer with online microwave-assisted hydrolysis for determination of dithiocarbamates

The Analyst ◽  
2018 ◽  
Vol 143 (12) ◽  
pp. 2790-2798 ◽  
Author(s):  
Bingjun Han ◽  
Ya Li ◽  
Bing Qian ◽  
Yan He ◽  
Lixu Peng ◽  
...  
Keyword(s):  
Liquid Chromatography ◽  
Dielectric Barrier Discharge ◽  
Barrier Discharge ◽  
Dielectric Barrier ◽  
Molecular Emission ◽  
Microwave Assisted

A novel detector for liquid chromatography (LC) for the determination of dithiocarbamate (DTC) fungicides is presented with a miniaturized dielectric barrier discharge–microplasma molecular emission spectrometer and an online microwave-assisted hydrolysis reactor.

scholarly journals Discharge Regimes Transition and Characteristics Evolution of Nanosecond Pulsed Dielectric Barrier Discharge

Nanomaterials ◽  
2019 ◽  
Vol 9 (10) ◽  
pp. 1381 ◽  
Author(s):  
Zhang ◽  
Yang ◽  
Wang ◽  
Jia ◽  
Yuan ◽  
...  
Keyword(s):  
Electric Field ◽  
Dielectric Barrier Discharge ◽  
Barrier Discharge ◽  
Molecular Nitrogen ◽  
Emission Spectra ◽  
Single Pulse ◽  
Surface Discharge ◽  
Initial Time ◽  
Dielectric Plate ◽  
Dielectric Barrier

Discharge regime transition in a single pulse can present the breakdown mechanism of nanosecond pulsed dielectric barrier discharge. In this paper, regime transitions between streamer, diffuse, and surface discharges in nanosecond pulsed dielectric barrier discharge are studied experimentally using high resolution temporal–spatial spectra and instantaneous exposure images. After the triggering time of 2–10 ns, discharge was initiated with a stable initial streamer channel propagation. Then, transition of streamer-diffuse modes could be presented at the time of 10–34 ns, and a surface discharge can be formed sequentially on the dielectric plate. In order to analyze the possible reason for the varying discharge regimes in a single discharge pulse, the temporal–spatial distribution of vibrational population of molecular nitrogen N2 (C3Πu, v = 0,1,2) and reduced electric field were calculated by the temporal–spatial emission spectra. It is found that at the initial time, a distorted high reduced electric field was formed near the needle electrode, which excited the initial streamer. With the initial streamer propagating to the dielectric plate, the electric field was rebuilt, which drives the transition from streamer to diffuse, and also the propagation of surface discharge.

Kinetics, Products and Mechanism of Destruction of Ethane in Corona Discharge

2003 ◽  
Vol 6 (1) ◽  
Author(s):  
Anatoli A. Chernov ◽  
Larisa G. Krishtopa ◽  
Oleg P. Korobeinichev ◽  
Lev N. Krasnoperov
Keyword(s):  
Ambient Temperature ◽  
Corona Discharge ◽  
Dielectric Barrier Discharge ◽  
Mass Spectrometer ◽  
High Voltage ◽  
Barrier Discharge ◽  
Flow Reactor ◽  
Quadrupole Mass Spectrometer ◽  
Quadrupole Mass ◽  
Dielectric Barrier

AbstractDestruction of ethane in corona discharge was studied using a tubular coaxial wire AC high-voltage dielectric barrier discharge flow reactor coupled to a GC/MS and a quadrupole mass-spectrometer. The experi­ments were performed at ambient temperature (295 ± 3 K) and pressure (1.00 ± 0.04 bar). Mixtures of 12, 109, 1033 and 10000 ppm ethane in synthetic air (21% O

scholarly journals Estimation of electron temperature in atmospheric pressure dielectric barrier discharge using line intensity ratio method

2013 ◽  
Vol 8 (2) ◽  
pp. 37-42 ◽  
Author(s):  
R Shrestha ◽  
RB Tyata ◽  
DP Subedi
Keyword(s):  
Electron Temperature ◽  
Dielectric Barrier Discharge ◽  
Line Intensity ◽  
Atmospheric Pressure ◽  
Intensity Ratio ◽  
Barrier Discharge ◽  
Emission Spectra ◽  
Ratio Method ◽  
Dielectric Barrier ◽  
Line Intensity Ratio

Dielectric Barrier Discharge was produced by applying high voltage AC source of frequency (10-30 KHz) and potential difference of (0-20) kV across two parallel plate electrodes with glass as dielectric barrier. Optical emission spectroscopy was used for the characterization of the discharge produced at atmospheric pressure. The emission spectra in the range of 200 nm to 850 nm have been analyzed to estimate the electron temperature by line intensity ratio method. The results showed that the electron temperature is about 0.9 eV. Kathmandu University Journal of Science, Engineering and Technology Vol. 8, No. II, December, 2012, 37-42 DOI: http://dx.doi.org/10.3126/kuset.v8i2.7323

scholarly journals Measurement of the electron temperature in dielectric barrier discharge by line-ratio method of optical emission spectroscopy

2015 ◽  
Vol 3 ◽  
pp. 1-6 ◽  
Author(s):  
R.B. Tyata ◽  
D.P. Subedi ◽  
C.S. Wong
Keyword(s):  
Electron Temperature ◽  
Dielectric Barrier Discharge ◽  
Atmospheric Pressure ◽  
Emission Spectroscopy ◽  
Optical Emission Spectroscopy ◽  
Barrier Discharge ◽  
Emission Spectra ◽  
Optical Emission ◽  
Ratio Method ◽  
Dielectric Barrier

In this paper, experimental results of atmospheric pressure dielectric barrier discharge (DBD) produced in air and nitrogen gas have been presented. The discharge was generated using a high voltage (0-20 kV) power supply operating at 10-30 kHz in hemispherical electrodes system with dielectric barrier of glass between the electrodes. Optical emission spectroscopy was used for the characterization of the discharge produced at atmospheric pressure. The emission spectra in the range of 200 nm to 450 nm have been analyzed to estimate the electron temperature by line intensity ratio method. The results show that the electron temperature is about 0.70 eV in air and 0.71 in nitrogen.

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