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    Response of lead deposited on glass to acetic acid exposure, with potential for its application as an acetic acid dosimeter/sensor

    Grontoft, T. and Marchiori, E. and Odlyha, Marianne (2018) Response of lead deposited on glass to acetic acid exposure, with potential for its application as an acetic acid dosimeter/sensor. e-PRESERVATION Science 15 , pp. 9-16. ISSN 1854-3928.

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    Abstract

    Abstract Small glass substrates were coated with a thin granular lead film by thermal vapour deposition in order to test the feasibility of using lead-coated glass as sensors for detecting the presence of gaseous acetic acid in air. The lead glass samples were exposed to acetic acid in increasing concentrations, at a controlled temperature of 23oC and 54% relative humidity for a period of 60 days. The change in the lead films on exposure was systematically investigated by measuring the variation in light transmission at a wavelength of 379 nm. Initial corrosion of the deposited reactive thin lead films leading to lead oxide and lead hydroxycarbonates and/or lead carbonates probably occurred. The analysis showed that the main response was due to corrosion of the lead film and granules with conversion to lead hydroxyl-carbonates and/or carbonates and formation of lead acetate. In addition, about 30% of the response was found to be due to acetic acid adsorption on the lead glass samples. After about 15 days exposure significant saturation and decrease in sensitivity was observed.

    Metadata

    Item Type: Article
    Keyword(s) / Subject(s): lead vapour deposition, granular lead film, glass substrate, acetic acid sensor, lead oxidation, light absorbance
    School: Birkbeck Schools and Departments > School of Science > Biological Sciences
    Research Centre: Structural Molecular Biology, Institute of (ISMB)
    Depositing User: Marianne Odlyha
    Date Deposited: 17 Oct 2018 10:07
    Last Modified: 17 Oct 2018 10:07
    URI: http://eprints.bbk.ac.uk/id/eprint/24689

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