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- Title
基于质谱法的大气压介质阻挡放电等离子体中 O<sub>3</sub>和 N<sub>2</sub>O 组分的测量.
- Authors
张腾飞; 文明; 黄龙呈; 冯高平; 王殿恺; 韦康
- Abstract
Atmospheric dielectric barrier discharge (DBD) plasma has a broad application prospect in wastewater treatment. O3 and N2O are important components of atmospheric plasma, and are affected by many factors. Highprecision realtime measurement of O3 and N2O concentrations in plasma is of great significance for optimizing discharge parameters and reactor design. Mass spectrometry has high specificity and sensitivity, and can simultaneously obtain the component concentrations of various substances and their changes with time. This research solved the traditional mass spectrometry is applied to hard under the condition of atmospheric pressure dielectric barrier discharge plasma active products measure and the problem of mass spectrometer is susceptible to interference of strong electric field, and designed a set of atmospheric pressure using quadrupole mass spectrometer O3 and N2O in the DBD plasma components of measurement system. At atmospheric pressure of 101.325 kPa, plasma was generated on a six-tube coaxial dielectric barrier discharge structure by a high voltage power supply with microsecond pulse width. The experimental results showed that the control voltage and the air flow have great influence on plasma component concentration. When the control voltage is 200 V, the composition of O3 and N2O is higher than that of other control voltages. When the control voltage is 200 V and the air flow is 7.8 L/min, the concentration of O3 reaches the highest. The concentration of N2O reaches the highest when the air flow rate is 3.8 L/min. The measurement methods and experimental results have important application value in the optimization of DBD reactor, the control of key parameters, and the application of dielectric barrier discharge plasma at atmospheric pressure.
- Subjects
ELECTRIC interference; POWER resources; AIR flow; ATMOSPHERIC pressure; PLASMA products; QUADRUPOLE mass analyzers; CHEMICAL ionization mass spectrometry
- Publication
Journal of Chinese Mass Spectrometry Society, 2023, Vol 44, Issue 3, p452
- ISSN
1004-2997
- Publication type
Article
- DOI
10.7538/zpxb.2022.0064