Preliminary investigations of optical emission spectroscopy atmospheric plasma for microbial inactivation

Author

Saad, Nor Aimi ; Za´aba, S.K. ; Nor, Roslan Md ; Baharudin, Balqissiah ; Zakaria, A. ; Zakaria, Z. ; Wan, Khairunizam ; Shariman, A.B.

Author_Institution

School of Mechatronic Engineering, Universiti Malaysia Perlis, Malaysia

fYear

2015

fDate

30-31 March 2015

Firstpage

1

Lastpage

6

Abstract

This paper explores the reactive species in helium plasma based on study of microbial inactivation effect. Optical emission spectroscopy was employ to analyze basic mechanism of plasma for microbial inactivation. Inactivation process was carried on bacteria Escherichia coli. Bacteria were fully inactivated at helium flow rate 600 ml/min. There are variations of each reactive species in different flow rate such as volume of species and intensity. The reactive species such as nitrogen, oxygen, helium were detected using spectrometer. Every species in plasma flume play important role in inactivation process. By observing the emission spectrum, it enables to understand and optimizing the microbial inactivation process and also gives insight in the plasma physics and chemical process.

Keywords

Chemicals; Helium; Microorganisms; Nitrogen; Plasma temperature; Stimulated emission; Escherichia coli; atmospheric plasma jet; microbial inactivation; optical emission spectroscopy; sterilization;

fLanguage

English

Publisher

ieee

Conference_Titel

Biomedical Engineering (ICoBE), 2015 2nd International Conference on

Conference_Location

Penang, Malaysia

Type

conf

DOI

10.1109/ICoBE.2015.7235918

Filename

7235918