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Long-term field comparison of multiple low-cost particulate matter sensors in an outdoor urban environment

Scientific reports, 2019-05, Vol.9 (1), p.7497, Article 7497 [Peer Reviewed Journal]

The Author(s) 2019. This work is published under http://creativecommons.org/licenses/by/4.0/ (the “License”). Notwithstanding the ProQuest Terms and Conditions, you may use this content in accordance with the terms of the License. ;The Author(s) 2019 ;ISSN: 2045-2322 ;EISSN: 2045-2322 ;DOI: 10.1038/s41598-019-43716-3 ;PMID: 31097728

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  • Title:
    Long-term field comparison of multiple low-cost particulate matter sensors in an outdoor urban environment
  • Author: Bulot, Florentin M J ; Johnston, Steven J ; Basford, Philip J ; Easton, Natasha H C ; Apetroaie-Cristea, Mihaela ; Foster, Gavin L ; Morris, Andrew K R ; Cox, Simon J ; Loxham, Matthew
  • Subjects: Air pollution ; Morbidity ; Particulate matter ; Pollution ; Relative humidity ; Sensors ; Spatial discrimination
  • Is Part Of: Scientific reports, 2019-05, Vol.9 (1), p.7497, Article 7497
  • Description: Exposure to ambient particulate matter (PM) air pollution is a leading risk factor for morbidity and mortality, associated with up to 8.9 million deaths/year worldwide. Measurement of personal exposure to PM is hindered by poor spatial resolution of monitoring networks. Low-cost PM sensors may improve monitoring resolution in a cost-effective manner but there are doubts regarding data reliability. PM sensor boxes were constructed using four low-cost PM micro-sensor models. Three boxes were deployed at each of two schools in Southampton, UK, for around one year and sensor performance was analysed. Comparison of sensor readings with a nearby background station showed moderate to good correlation (0.61 < r < 0.88, p < 0.0001), but indicated that low-cost sensor performance varies with different PM sources and background concentrations, and to a lesser extent relative humidity and temperature. This may have implications for their potential use in different locations. Data also indicates that these sensors can track short-lived events of pollution, especially in conjunction with wind data. We conclude that, with appropriate consideration of potential confounding factors, low-cost PM sensors may be suitable for PM monitoring where reference-standard equipment is not available or feasible, and that they may be useful in studying spatially localised airborne PM concentrations.
  • Publisher: England: Nature Publishing Group
  • Language: English
  • Identifier: ISSN: 2045-2322
    EISSN: 2045-2322
    DOI: 10.1038/s41598-019-43716-3
    PMID: 31097728
  • Source: PubMed Central
    ProQuest Central
    DOAJ Directory of Open Access Journals
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