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    To what extent can portable fluorescence spectroscopy be used in the real-time assessment of microbial water quality?

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    Bridgeman_J_2015_To _what_extent_can_portable_fluorescence.pdf (634.5Kb)
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    Publication date
    2015
    Author
    Baker, A.
    Cumberland, S.A.
    Bradley, C.
    Buckley, C.
    Bridgeman, John
    Keyword
    Organic matter fluorescence
    Microbial water quality
    Fluorimetry
    River
    Groundwater
    Rights
    © 2015 The Authors. Published by Elsevier B.V. This is an open access article under the CC BY license (http://creativecommons.org/licenses/by/4.0/).
    Peer-Reviewed
    Yes
    
    Metadata
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    Abstract
    The intrinsic fluorescence of aquatic organic matter emitted at 350 nm when excited at 280 nm correlates widely with water quality parameters such as biochemical oxygen demand. Hence, in sewage-impacted rivers and groundwater, it might be expected that fluorescence at these wavelengths will also correlate with the microbial water quality. In this paper we use a portable fluorimeter to assess the relationship between fluorescence intensity at this wavelength pair and Escherichia coli enumeration in contrasting river catchments of poor water quality: in KwaZulu-Natal, S. Africa and the West Midlands, UK. Across all catchments we demonstrate a log correlation (r = 0.74) between fluorescence intensity and E. coli over a seven-log range in E. coli enumerations on non-perturbed (unfiltered) samples. Within specific catchments, the relationship between fluorescence intensity and E. coli is more variable, demonstrating the importance of catchment-specific interference. Our research demonstrates the potential of using a portable fluorimeter as an initial screening tool for indicative microbial water quality, and one that is ideally suited to simple pollution scenarios such as assessing the impact of faecal contamination in river or groundwater at specific sites.
    URI
    http://hdl.handle.net/10454/16970
    Version
    Published version
    Citation
    Baker A, Cumberland SA, Bradley C et al (2015) To what extent can portable fluorescence spectroscopy be used in the real-time assessment of microbial water quality? Science of the Total Environment. 532: 14-19.
    Link to publisher’s version
    https://doi.org/10.1016/j.scitotenv.2015.05.114
    Type
    Article
    Collections
    Engineering and Informatics Publications

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