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Inactivation of Bacteria in an Aqueous Environment by a Direct-Current, Cold-Atmospheric-Pressure Air Plasma Microjet
Liu, Fuxiang1,2; Sun, Peng1; Bai, Na1,2; Tian, Ye1,2; Zhou, Haixia1,2; Wei, Shicheng1,3; Zhou, Yanheng1,3; Zhang, Jue1; Zhu, Weidong; Becker, Kurt4; Fang, Jing1
关键词Bacteria Cell Membranes Cold Plasma Plasma Microjets
刊名PLASMA PROCESSES AND POLYMERS
2010-03-22
DOI10.1002/ppap.200900070
7期:3-4页:231-236
收录类别SCI
文章类型Article
WOS标题词Science & Technology
类目[WOS]Physics, Applied ; Physics, Fluids & Plasmas ; Physics, Condensed Matter ; Polymer Science
研究领域[WOS]Physics ; Polymer Science
关键词[WOS]GLOW
英文摘要

A direct-current, cold-atmospheric-pressure air plasma microjet (PMJ) sustained in a quasi-steady gas cavity in a liquid medium is used to inactivate Staphylococcus aureus (S. aureus) suspended in the liquid. The temperature and the pH value of the liquid change to steady-state values of about 40 degrees C and 3.0-4.5, respectively, after 10 min of plasma treatment. The decrease in the pH is attributed to the reaction of NO(x) produced in the air plasma with water at the gas-liquid interface. The concentrations of NO(3)(-) and NO(2)(-) are measured to be 37 mg.L(-1) and 21 mg.L(-1), respectively, after a 20 min of plasma treatment. Effective inactivation of S. aureus is found to start after the pH values decreases to about 4.5. This is attributed to the high oxidizing potential of the perhydroxyl radical (HOO(center dot)) on the fatty acid in the cell membranes of the microorganisms in the liquid.

语种英语
WOS记录号WOS:000276547700005
引用统计
被引频次:94[WOS]   [WOS记录]     [WOS相关记录]
文献类型期刊论文
条目标识符http://ir.bjmu.edu.cn/handle/400002259/57535
专题北京大学口腔医学院
北京大学第三临床医学院_泌尿外科
作者单位1.Peking Univ, Acad Adv Interdisciplinary Studies, Beijing 100871, Peoples R China
2.Sichuan Univ, W China Coll Stomatol, Chengdu 610064, Peoples R China
3.Peking Univ, Sch Stomatol, Beijing 100871, Peoples R China
4.NYU, Dept Phys, Polytech Inst, New York, NY 10003 USA
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GB/T 7714
Liu, Fuxiang,Sun, Peng,Bai, Na,et al. Inactivation of Bacteria in an Aqueous Environment by a Direct-Current, Cold-Atmospheric-Pressure Air Plasma Microjet[J]. PLASMA PROCESSES AND POLYMERS,2010,7(3-4):231-236.
APA Liu, Fuxiang.,Sun, Peng.,Bai, Na.,Tian, Ye.,Zhou, Haixia.,...&Fang, Jing.(2010).Inactivation of Bacteria in an Aqueous Environment by a Direct-Current, Cold-Atmospheric-Pressure Air Plasma Microjet.PLASMA PROCESSES AND POLYMERS,7(3-4),231-236.
MLA Liu, Fuxiang,et al."Inactivation of Bacteria in an Aqueous Environment by a Direct-Current, Cold-Atmospheric-Pressure Air Plasma Microjet".PLASMA PROCESSES AND POLYMERS 7.3-4(2010):231-236.
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