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Validation of a light-scattering PM2.5 sensor monitor based on the long-term gravimetric measurements in field tests

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Listed:
  • Jingjin Shi
  • Fei’er Chen
  • Yunfei Cai
  • Shichen Fan
  • Jing Cai
  • Renjie Chen
  • Haidong Kan
  • Yihan Lu
  • Zhuohui Zhao

Abstract

Background: Portable direct-reading instruments by light-scattering method are increasingly used in airborne fine particulate matter (PM2.5) monitoring. However, there are limited calibration studies on such instruments by applying the gravimetric method as reference method in field tests. Methods: An 8-month sampling was performed and 96 pairs of PM2.5 data by both the gravimetric method and the simultaneous light-scattering real-time monitoring (QT-50) were obtained from July, 2015 to February, 2016 in Shanghai. Temperature and relative humidity (RH) were recorded. Mann-Whitney U nonparametric test and Spearman correlation were used to investigate the differences between the two measurements. Multiple linear regression (MLR) model was applied to set up the calibration model for the light-scattering device. Results: The average PM2.5 concentration (median) was 48.1μg/m3 (min-max 10.4–95.8μg/m3) by the gravimetric method and 58.1μg/m3 (19.2–315.9μg/m3) by the light-scattering method, respectively. By time trend analyses, they were significantly correlated with each other (Spearman correlation coefficient 0.889, P

Suggested Citation

  • Jingjin Shi & Fei’er Chen & Yunfei Cai & Shichen Fan & Jing Cai & Renjie Chen & Haidong Kan & Yihan Lu & Zhuohui Zhao, 2017. "Validation of a light-scattering PM2.5 sensor monitor based on the long-term gravimetric measurements in field tests," PLOS ONE, Public Library of Science, vol. 12(11), pages 1-13, November.
    • Handle: RePEc:plo:pone00:0185700
    DOI: 10.1371/journal.pone.0185700
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    Cited by:

    1. Youngrin Kwag & Shinhee Ye & Jongmin Oh & Dong-Wook Lee & Wonho Yang & Yangho Kim & Eunhee Ha, 2021. "Direct and Indirect Effects of Indoor Particulate Matter on Blood Indicators Related to Anemia," IJERPH, MDPI, vol. 18(24), pages 1-12, December.
    2. Caubel, J.J. & Trojanowski, R. & Butcher, T. & Rapp, V.H., 2023. "A review of regulatory standard test methods for residential wood heaters and recommendations for their advancement," Renewable and Sustainable Energy Reviews, Elsevier, vol. 184(C).
    3. Fiona Mabonga & Tara K. Beattie & Kondwani Luwe & Tracy Morse & Caitlin Hope & Iain J. Beverland, 2021. "Exposure to Air Pollution in Rural Malawi: Impact of Cooking Methods on Blood Pressure and Peak Expiratory Flow," IJERPH, MDPI, vol. 18(14), pages 1-16, July.

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