scholarly journals Degradation of telmisartan (TELMA-H) compounds in aqueous solution using non-thermal atmospheric pressure plasma jet

2019 ◽  
Vol 1 (1) ◽  
pp. 46-52
Author(s):  
Vasu D ◽  
Raji A ◽  
Pandiyaraj K.N ◽  
Padmanabhan P.V.A ◽  
Kandhavelu V
Keyword(s):  
Aqueous Solution ◽  
Atmospheric Pressure ◽  
Atmospheric Pressure Plasma ◽  
Emission Spectra ◽  
Optical Emission ◽  
Plasma Jet ◽  
Atmospheric Pressure Plasma Jet ◽  
Pressure Plasma ◽  
Spectroscopy Optical ◽  
Optical Emission Spectra

In this study we investigate the degradation of telmisartan (Telma-H) in simulated aqueous solution using non-thermal atmospheric pressure plasma jet (APPJ). Aqueous solution containing Telma-H was treated with APPJ as a function of applied potential and reaction time. The degradation of Telma-H was investigated by means of UV-Visible spectroscopy. Optical emission spectra (OES) of the plasma jet was used to identify the reactive species that contributed to degrade Telma H compounds. The variation of pH and conductivity of the plasma treated Telma H aqueous solution was also measured.

scholarly journals The Effect of Oxygen Admixture with Argon Discharges on the Impact Parameters of Atmospheric Pressure Plasma Jet Characteristics

2021 ◽  
Vol 11 (15) ◽  
pp. 6870
Author(s):  
Atif H. Asghar ◽  
Ahmed Rida Galaly
Keyword(s):  
Flow Rate ◽  
Atmospheric Pressure ◽  
Atmospheric Pressure Plasma ◽  
Emission Spectra ◽  
Optical Emission ◽  
Plasma Jet ◽  
Flow Rates ◽  
Jet Length ◽  
Pressure Plasma ◽  
Optical Emission Spectra

Dry argon (Ar) discharge and wet oxygen/argon (O2/Ar) admixture discharge for alternating current atmospheric pressure plasma jets (APPJs) were studied for Ar discharges with flow rates ranging from 0.2 to 4 slm and for O2/Ar discharges with different O2 ratios and flow rates ranging from 2.5 to 15 mslm. The voltage–current waveform signals of APPJ discharge, gas flow rate, photo-imaging of the plasma jet length and width, discharge plasma power, axial temperature distribution, optical emission spectra, and irradiance were investigated. Different behavior for varying oxygen content in the admixture discharge was observed. The temperature recognizably decreased, axially, far away from the nozzle of the jet as the flow rate of dry argon decreased. Similar behavior was observed for wet argon but with a lower temperature than for dry argon. The optical emission spectra and the dose rate of irradiance of a plasma jet discharge were investigated as a function of plasma jet length, for dry and wet Ar discharges, to determine the data compatible with the International Commission on Non-Ionizing Radiation Protection (ICNIRP) data for irradiance exposure limits of the skin, which are suitable for the disinfection of microbes on the skin without harmful effects, equivalent to 30 μJ/mm2.

scholarly journals Time resolved optical emission spectroscopy in power modulated atmospheric pressure plasma jet

2014 ◽  
Vol 13 (1) ◽  
Author(s):  
Jaroslav Hnilica ◽  
Lucia Potočňáková ◽  
Vít Kudrle
Keyword(s):  
Atmospheric Pressure ◽  
Emission Spectroscopy ◽  
Optical Emission Spectroscopy ◽  
Strong Dependence ◽  
Atmospheric Pressure Plasma ◽  
Optical Emission ◽  
Plasma Jet ◽  
Atmospheric Pressure Plasma Jet ◽  
Time Resolved ◽  
Pressure Plasma

AbstractIn this paper, the effects of the power modulation on atmospheric pressure plasma jet, operated in Ar+2%N2 mixture, are studied. Time resolved optical emission spectroscopy is used for the investigation. From line and band intensities, the excitation, vibration and rotation temperatures are calculated. Their evolution during the modulation period exhibits a strong dependence on modulation frequency. For higher modulation frequencies, there is significant discrepancy in rotational temperatures calculated from OH spectra and from N2+ spectra, which indicates that thermalisation time can reach milliseconds.

Time resolved optical emission images of an atmospheric pressure plasma jet with transparent electrodes

2012 ◽  
Vol 101 (2) ◽  
pp. 024103 ◽  
Author(s):  
N. Puač ◽  
D. Maletić ◽  
S. Lazović ◽  
G. Malović ◽  
A. Đorđević ◽  
...  
Keyword(s):  
Atmospheric Pressure ◽  
Atmospheric Pressure Plasma ◽  
Optical Emission ◽  
Plasma Jet ◽  
Atmospheric Pressure Plasma Jet ◽  
Transparent Electrodes ◽  
Time Resolved ◽  
Pressure Plasma
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