Scoping studies to establish the capability and utility of a real-time bioaerosol sensor to characterise emissions from environmental sources

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dc.contributor.author Nasir, Zaheer A.
dc.contributor.author Hayes, Enda
dc.contributor.author Williams, Ben
dc.contributor.author Gladding, Toni
dc.contributor.author Rolph, Catherine
dc.contributor.author Khera, Shagun
dc.contributor.author Jackson, Simon
dc.contributor.author Bennett, Allan
dc.contributor.author Collins, Samuel
dc.contributor.author Parks, Simon
dc.contributor.author Attwood, Alexis
dc.contributor.author Kinnersley, Robert P.
dc.contributor.author Walsh, Kerry
dc.contributor.author Garcia Alcega, Sonia
dc.contributor.author Pollard, Simon J. T.
dc.contributor.author Drew, Gill
dc.contributor.author Coulon, Frédéric
dc.contributor.author Tyrrel, Sean
dc.date.accessioned 2018-08-13T13:43:50Z
dc.date.available 2018-08-13T13:43:50Z
dc.date.issued 2018-08-09
dc.identifier.citation Nasir ZA, Hayes E, Williams B, et al., Scoping studies to establish the capability and utility of a real-time bioaerosol sensor to characterise emissions from environmental sources, Science of the Total Environment, Volume 648, 15 January 2019, pp. 25-32 en_UK
dc.identifier.issn 0048-9697
dc.identifier.uri http://dx.doi.org/10.1016/j.scitotenv.2018.08.120
dc.identifier.uri http://dspace.lib.cranfield.ac.uk/handle/1826/13395
dc.description.abstract A novel dual excitation wavelength based bioaerosol sensor with multiple fluorescence bands called Spectral Intensity Bioaerosol Sensor (SIBS) has been assessed across five contrasting outdoor environments. The mean concentrations of total and fluorescent particles across the sites were highly variable being the highest at the agricultural farm (2.6 cm−3 and 0.48 cm−3, respectively) and the composting site (2.32 cm−3 and 0.46 cm−3, respectively) and the lowest at the dairy farm (1.03 cm−3 and 0.24 cm−3, respectively) and the sewage treatment works (1.03 cm−3 and 0.25 cm−3, respectively). In contrast, the number-weighted fluorescent fraction was lowest at the agricultural site (0.18) in comparison to the other sites indicating high variability in nature and magnitude of emissions from environmental sources. The fluorescence emissions data demonstrated that the spectra at different sites were multimodal with intensity differences largely at wavelengths located in secondary emission peaks for λex 280 and λex 370. This finding suggests differences in the molecular composition of emissions at these sites which can help to identify distinct fluorescence signature of different environmental sources. Overall this study demonstrated that SIBS provides additional spectral information compared to existing instruments and capability to resolve spectrally integrated signals from relevant biological fluorophores could improve selectivity and thus enhance discrimination and classification strategies for real-time characterisation of bioaerosols from environmental sources. However, detailed lab-based measurements in conjunction with real-world studies and improved numerical methods are required to optimise and validate these highly resolved spectral signatures with respect to the diverse atmospherically relevant biological fluorophores. en_UK
dc.language.iso en en_UK
dc.publisher Elsevier en_UK
dc.rights Attribution 4.0 International *
dc.rights.uri http://creativecommons.org/licenses/by/4.0/ *
dc.subject Real-time monitoring en_UK
dc.subject Bioaerosols en_UK
dc.subject Emissions characterisation en_UK
dc.subject Fluorescence spectra en_UK
dc.title Scoping studies to establish the capability and utility of a real-time bioaerosol sensor to characterise emissions from environmental sources en_UK
dc.type Article en_UK


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