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Title: Assessment of the roles of various inactivation agents in an argon-based direct current atmospheric pressure cold plasma jet

Abstract

Three types of gases, pure argon (99.999%), argon with 2% oxygen, and argon with 2% oxygen and 10% nitrogen were used as operating gases of a direct current atmospheric pressure cold plasma jet to inactivate Staphylococcus aureus (S. aureus) suspended in a liquid. The inactivation efficacies for the plasma jets operating in the three gases decrease from Ar/O{sub 2}(2%) to Ar/O{sub 2}(2%)/N{sub 2}(10%) to pure Ar. Optical emission spectroscopy, electron spin resonance spectroscopy, high performance liquid chromatography, and atomic absorption spectrophotometry were employed to identify and monitor the reactive species in the plasma-liquid system for the three operating gases and revealed the presence of O, {sup 1}O{sub 2}, OH, NO, H{sub 2}O{sub 2}, O{sub 3}, and NO{sub 3}{sup -}/NO{sub 2}{sup -} as well as Cu{sup +}/Cu{sup 2+}. The S. aureus inactivation results indicate that atomic oxygen (O) is the key inactivation agent, while other species play a lesser role in the inactivation progress studied here.

Authors:
;  [1]; ; ;  [2];  [3];  [4]; ;  [1];  [5]
  1. Academy for Advanced Interdisciplinary Studies, Peking University, Beijing 100871 (China)
  2. College of Engineering, Peking University, Beijing 100871 (China)
  3. Department of Applied Science and Technology, Saint Peter's College, New Jersey 07031 (United States)
  4. Department of Applied Physics, Polytechnic Institute of New York University, New York 11201 (United States)
  5. (China)
Publication Date:
OSTI Identifier:
22089246
Resource Type:
Journal Article
Journal Name:
Journal of Applied Physics
Additional Journal Information:
Journal Volume: 111; Journal Issue: 12; Other Information: (c) 2012 American Institute of Physics; Country of input: International Atomic Energy Agency (IAEA); Journal ID: ISSN 0021-8979
Country of Publication:
United States
Language:
English
Subject:
37 INORGANIC, ORGANIC, PHYSICAL AND ANALYTICAL CHEMISTRY; ABSORPTION SPECTROSCOPY; ARGON; ATOMIZATION; COLD PLASMA; COPPER IONS; ELECTRON SPIN RESONANCE; EMISSION SPECTROSCOPY; HIGH-PERFORMANCE LIQUID CHROMATOGRAPHY; HYDROGEN PEROXIDE; INACTIVATION; IONIZING RADIATIONS; MIXTURES; NITRIC OXIDE; NITROGEN COMPOUNDS; OXYGEN; PARAMAGNETISM; STAPHYLOCOCCUS; SUSPENSIONS

Citation Formats

Zhang Qian, Wang Ruixue, Sun Peng, Feng Hongqing, Liang Yongdong, Zhu Weidong, Becker, Kurt H., Zhang Jue, Fang Jing, and College of Engineering, Peking University, Beijing 100871. Assessment of the roles of various inactivation agents in an argon-based direct current atmospheric pressure cold plasma jet. United States: N. p., 2012. Web. doi:10.1063/1.4730627.
Zhang Qian, Wang Ruixue, Sun Peng, Feng Hongqing, Liang Yongdong, Zhu Weidong, Becker, Kurt H., Zhang Jue, Fang Jing, & College of Engineering, Peking University, Beijing 100871. Assessment of the roles of various inactivation agents in an argon-based direct current atmospheric pressure cold plasma jet. United States. doi:10.1063/1.4730627.
Zhang Qian, Wang Ruixue, Sun Peng, Feng Hongqing, Liang Yongdong, Zhu Weidong, Becker, Kurt H., Zhang Jue, Fang Jing, and College of Engineering, Peking University, Beijing 100871. Fri . "Assessment of the roles of various inactivation agents in an argon-based direct current atmospheric pressure cold plasma jet". United States. doi:10.1063/1.4730627.
@article{osti_22089246,
title = {Assessment of the roles of various inactivation agents in an argon-based direct current atmospheric pressure cold plasma jet},
author = {Zhang Qian and Wang Ruixue and Sun Peng and Feng Hongqing and Liang Yongdong and Zhu Weidong and Becker, Kurt H. and Zhang Jue and Fang Jing and College of Engineering, Peking University, Beijing 100871},
abstractNote = {Three types of gases, pure argon (99.999%), argon with 2% oxygen, and argon with 2% oxygen and 10% nitrogen were used as operating gases of a direct current atmospheric pressure cold plasma jet to inactivate Staphylococcus aureus (S. aureus) suspended in a liquid. The inactivation efficacies for the plasma jets operating in the three gases decrease from Ar/O{sub 2}(2%) to Ar/O{sub 2}(2%)/N{sub 2}(10%) to pure Ar. Optical emission spectroscopy, electron spin resonance spectroscopy, high performance liquid chromatography, and atomic absorption spectrophotometry were employed to identify and monitor the reactive species in the plasma-liquid system for the three operating gases and revealed the presence of O, {sup 1}O{sub 2}, OH, NO, H{sub 2}O{sub 2}, O{sub 3}, and NO{sub 3}{sup -}/NO{sub 2}{sup -} as well as Cu{sup +}/Cu{sup 2+}. The S. aureus inactivation results indicate that atomic oxygen (O) is the key inactivation agent, while other species play a lesser role in the inactivation progress studied here.},
doi = {10.1063/1.4730627},
journal = {Journal of Applied Physics},
issn = {0021-8979},
number = 12,
volume = 111,
place = {United States},
year = {2012},
month = {6}
}