OPTICAL EMISSION SPECTROSCOPY ANALYSIS OF ATMOSPHERIC PLASMA JET PLUME ON BACTERIA INACTIVATION

2015 ◽  
Vol 77 (6) ◽  
Author(s):  
Nor Aimi Saad ◽  
SK Zaaba ◽  
M.T. Mustaffa ◽  
A. Zakaria ◽  
Roslan Md Nor ◽  
...  
Keyword(s):  
Emission Spectroscopy ◽  
Optical Emission Spectroscopy ◽  
Plasma Plume ◽  
Optical Emission ◽  
Plasma Jet ◽  
Reactive Species ◽  
Microbial Inactivation ◽  
Atmospheric Plasma ◽  
Spectroscopy Analysis ◽  
Bacteria Inactivation

In this paper, an atmospheric plasma jet plasma plume generated using Helium gas was investigated for reactive plasma species. The method of investigation is by using Optical Emission Spectroscopy analysis. Observation of the emission spectrum enables understanding of the influence of reactive species inside plasma plume to microbial inactivation process. The reactive species in plasma plume were detected using spectrometer without presence of bacteria. Escherichia coli and Methicillin-resistant staphylococcus aureus were used as inactivation targets. Bacteria were cultured in 10 Colony Forming Unit per milliliter in single colony and exposed to plasma at different time. It is found that, both bacteria were inactivated at 180 seconds.  The result of emission line spectrum showed the presence of nitrogen and oxygen between line 300 nm until 700 nm. Nitrogen and oxygen are involved in oxidation process which is known as Reactive Nitrogen Species and Reactive Oxygen Species. These species are main key in bacteria inactivation.

scholarly journals The effect of liquid target on a nonthermal plasma jet—imaging, electric fields, visualization of gas flow and optical emission spectroscopy

2018 ◽  
Vol 51 (6) ◽  
pp. 065202 ◽  
Author(s):  
Vesna V Kovačević ◽  
Goran B Sretenović ◽  
Elmar Slikboer ◽  
Olivier Guaitella ◽  
Ana Sobota ◽  
...  
Keyword(s):  
Electric Fields ◽  
Emission Spectroscopy ◽  
Gas Flow ◽  
Optical Emission Spectroscopy ◽  
Nonthermal Plasma ◽  
Optical Emission ◽  
Plasma Jet

Improved inductively coupled plasma optical emission spectroscopy analysis of trace elements in complex matrices by chemometric resolution

2015 ◽  
Vol 30 (4) ◽  
pp. 936-940 ◽  
Author(s):  
Pao Li ◽  
Wensheng Cai ◽  
Xueguang Shao
Keyword(s):  
Trace Elements ◽  
Quantitative Analysis ◽  
Inductively Coupled Plasma ◽  
Emission Spectroscopy ◽  
Optical Emission Spectroscopy ◽  
Optical Emission ◽  
Icp Oes ◽  
Spectroscopy Analysis ◽  
Inductively Coupled ◽  
Plasma Optical Emission Spectroscopy

With the help of standard signals, the signals of trace elements in overlapping ICP OES signals can be obtained by a non-negative immune algorithm and used for quantitative analysis.

Spatially Resolved Optical Emission Spectroscopy of a Helium Plasma Jet and its Effects on Wound Healing Rate in a Diabetic Murine Model

2014 ◽  
Vol 4 (1-4) ◽  
pp. 177-191 ◽  
Author(s):  
Marc C. Jacofsky ◽  
Cheri Lubahn ◽  
Courtney McDonnell ◽  
Yohan Seepersad ◽  
Gregory Fridman ◽  
...  
Keyword(s):  
Wound Healing ◽  
Murine Model ◽  
Emission Spectroscopy ◽  
Optical Emission Spectroscopy ◽  
Healing Rate ◽  
Optical Emission ◽  
Plasma Jet ◽  
Helium Plasma ◽  
Spatially Resolved ◽  
Wound Healing Rate

Study on coating growth characteristics during the electrolytic oxidation of a magnesium–lithium alloy by optical emission spectroscopy analysis

RSC Advances ◽  
2015 ◽  
Vol 5 (84) ◽  
pp. 68806-68814 ◽  
Author(s):  
Zhongping Yao ◽  
Qixing Xia ◽  
Han Wei ◽  
Dongqi Li ◽  
Qiu Sun ◽  
...  
Keyword(s):  
Emission Spectroscopy ◽  
Plasma Electrolytic Oxidation ◽  
Optical Emission Spectroscopy ◽  
Optical Emission ◽  
Growth Characteristics ◽  
Spectroscopy Analysis ◽  
Electrolytic Oxidation ◽  
Composition Structure ◽  
Plasma Electrolytic ◽  
Peo Coatings

The aim of this study is to analyze the composition, structure and growth characteristics of plasma electrolytic oxidation (PEO) coatings through optical emission spectroscopy (OES).

Optical Emission Spectroscopy of Argon Plasma Jet

2013 ◽  
Vol 770 ◽  
pp. 245-248 ◽  
Author(s):  
Kanchaya Honglertkongsakul
Keyword(s):  
Electron Temperature ◽  
Nozzle Exit ◽  
Emission Spectroscopy ◽  
Optical Emission Spectroscopy ◽  
Argon Plasma ◽  
Optical Emission ◽  
Plasma Jet ◽  
Plasma Expansion ◽  
Plasma Parameters ◽  
Argon Plasma Jet

Argon plasma jet in a single-electrode configuration was generated at low temperature and atmospheric pressure by 50 kHz radiofrequency power supply. Optical Emission Spectroscopy (OES) was used to investigate the local emissivity of argon plasma in the range between 200 and 1,100 nm. The spatial distribution of reactive species was measured at different distances of the plasma expansion from the nozzle exit such as 0.0, 0.5, 1.0, 1.5, 2.0, 2.5 and 3.0 cm. These measurements were obtained to analyze the plasma parameters such as electron temperature and electron density. The effect of distances of the plasma expansion from the nozzle exit on the plasma parameters was studied. The main intensive argon lines were found in the region between 690 and 970 nm. The electron temperature was found in the range of 0.5-1.1 eV. The electron density was found in the range of 4.0x1012-1.2x1013 cm-3. The plasma parameters strongly depended on the distances of the plasma expansion from the nozzle exit.

scholarly journals Methods Employed in Optical Emission Spectroscopy Analysis: a Review

2015 ◽  
Vol 11 (21) ◽  
pp. 239-267 ◽  
Author(s):  
D M Devia ◽  
L V Rodriguez-Restrepo ◽  
E Restrepo-Parra
Keyword(s):  
Emission Spectroscopy ◽  
Optical Emission Spectroscopy ◽  
Emission Spectra ◽  
Optical Emission ◽  
Spectroscopy Analysis ◽  
Electronic Temperature ◽  
Arc Discharges ◽  
Plasma Techniques ◽  
Fundamental Physical ◽  
Physical Principles

In this work, different methods employed for the analysis of emission spectra are presented. The proposal is to calculate the excitation temperature (Texc), electronic temperature (Te) and electron density (ne) for several plasma techniques used in the growth of thin films. Some of these tecnniques include magnetron sputtering and arc discharges. Initially, some fundamental physical principles that support the Optical Emission Spec-troscopy (OES) technique are described; then, some rules to consider during the spectral analysis to avoid ambiguities are listed. Finally, some of the more frequently used spectroscopic methods for determining the physical properties of plasma are described.

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