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UV treatment of microorganisms on contaminated surfaces using excilamps and Microwave UV lamps.

Christofi, Nicholas, Misakyan, M A, Matafonova, Galina, Barkhudarov, E M, Batoev, Valeriy, Kossyi, I A and Sharp, John (2008) UV treatment of microorganisms on contaminated surfaces using excilamps and Microwave UV lamps. Chemosphere, 73 (5). pp. 717-722. ISSN 0045 6535

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    Abstract/Description

    An XeBr excilamp having a peak emission at 283 nm, and microwave UV lamps with peak emissions at
    253.7 nm that also generate ozone, have been tested for ability to eradicate high populations of microbial
    vegetative cells and spores (of bacteria and fungi) artificially added to filter surfaces. The study examined
    the energy required to completely eradicate large populations on filter surfaces. It was found that both
    the excilamp and microwave UV lamps were effective at killing large populations on surfaces with killing
    efficiency dependant on the type of organism, and, whether present in its vegetative or spore forms. The
    main killing factor is UV radiation following short treatment times. It is considered that for longer irradiation
    periods that are required to facilitate complete destruction of surface microorganisms, ozone and
    other oxidising species produced by microwave UV lamps would act to enhance microbial destruction.

    Item Type: Article
    Print ISSN: 0045 6535
    Electronic ISSN: 1879-1298
    Uncontrolled Keywords: Microwave UV lamp; Excilamp; Microbial decontamination; Surface disinfection;
    University Divisions/Research Centres: Faculty of Engineering, Computing and Creative Industries > School of Engineering and the Built Environment
    Dewey Decimal Subjects: 500 Science > 540 Chemistry > 543 Analytical chemistry
    600 Technology > 600 Technology > 602 Miscellany
    Library of Congress Subjects: T Technology > TK Electrical engineering. Electronics Nuclear engineering
    Item ID: 5325
    Depositing User: Dr. John Sharp
    Date Deposited: 24 May 2012 16:08
    Last Modified: 12 Feb 2013 13:46
    URI: http://researchrepository.napier.ac.uk/id/eprint/5325

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