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Bactericidal action of positive and negative ions in air

By L. Fletcher, Lindsey F Gaunt, Clive B Beggs, Simon J Shepherd, A. Sleigh, C.J. Noakes and Kevin G Kerr

Abstract

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\ud 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.\ud A study was therefore undertaken to clarify this issue and to determine the physical mechanisms associated with microbial cell death.\u

Publisher: BioMed Central Ltd
Year: 2007
OAI identifier: oai:eprints.whiterose.ac.uk:7688

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