Bactericidal action of positive and negative ions in air |
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| Authors: | Louise A Fletcher Lindsey F Gaunt Clive B Beggs Simon J Shepherd P Andrew Sleigh Catherine J Noakes Kevin G Kerr |
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| Affiliation: | (1) School of Civil Engineering, University of Leeds, LS2 9JT Leeds, UK;(2) Department of Electronics and Computer Science, University of Southampton, SO17 1BJ Southampton, UK;(3) School of Engineering, Design and Technology, University of Bradford, BD7 1DP Bradford, UK;(4) Harrogate Health Care Trust, Harrogate District Hospital, HG2 7SX, Lancaster Park Road, Harrogate, UK |
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| Abstract: | Background In recent years there has been renewed interest in the use of air ionisers to control of the spread of airborne infection. One characteristic of air ions which has been widely reported is their apparent biocidal action. However, whilst the body of evidence suggests a biocidal effect in the presence of air ions the physical and biological mechanisms involved remain unclear. In particular, it is not clear which of several possible mechanisms of electrical origin (i.e. the action of the ions, the production of ozone, or the action of the electric field) are responsible for cell death. A study was therefore undertaken to clarify this issue and to determine the physical mechanisms associated with microbial cell death. |
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