Effects of road traffic on the accuracy and bias of low-cost particulate matter sensor measurements in Houston, Texas.

Details

• Personal Author:
  Bauer C ; Carson A ; Han I ; Oluwadairo T ; Symanski, Elaine ; Whitehead L
• Description:
  Although PM2.5 measurements of low-cost particulate matter sensors (LCPMS) generally show moderate and strong correlations with those from research-grade air monitors, the data quality of LCPMS has not been fully assessed in urban environments with different road traffic conditions. We examined the linear relationships between PM2.5 measurements taken by an LCPMS (Dylos DC1700) and two research grade monitors, a personal environmental monitor (PEM) and the GRIMM 11R, in three different urban environments, and compared the accuracy (slope) and bias of these environments. PM2.5 measurements were carried out at three locations in Houston, Texas (Clinton Drive largely with diesel trucks, US-59 mostly with gasoline vehicles, and a residential home with no major sources of traffic emissions nearby). The slopes of the regressions of the PEM on Dylos and Grimm measurements varied by location (e.g., PEM/Dylos slope at Clinton Drive = 0.98 (R2 = 0.77), at US-59 = 0.63 (R2 = 0.42), and at the residence = 0.29 (R2 = 0.31)). Although the regression slopes and coefficients differed across the three urban environments, the mean percent bias was not significantly different. Using the correct slope for LCPMS measurements is key for accurately estimating ambient PM2.5 mass in urban environments. [Description provided by NIOSH]
• Subjects:
  Air Pollution Environmental Monitoring Occupational Health Particulate Matter Safety Vehicle Emissions
• Keywords:
  Author Keywords: Low-cost Sensors; Road Traffic; Particulate Matter (PM); PM Monitoring; PM Sensor Calibration Environmental Monitoring; Sensors; Particulates; Particle Counters; Automotive Emissions; Monitoring Systems; Diesel Emissions; Air Quality Measurement;
• ISSN:
  1660-4601
• Document Type:
  Text
• Funding:
  Grant
• Genre:
  Journal Article
• Place as Subject:
  OSHA Region 3 ; OSHA Region 6 ; Pennsylvania ; Texas
• CIO:
  National Institute for Occupational Safety and Health (NIOSH)
• Topic:
  Workplace Safety & Health
• Location:
  North America
• Volume:
  19
• Issue:
  3
• NIOSHTIC Number:
  nn:20065495
• Citation:
  Int J Environ Res Public Health 2022 Feb; 19(3):1086
• Contact Point Address:
  Inkyu Han, Department of Epidemiology and Biostatistics, Temple University College of Public Health, Philadelphia, PA 19122, USA
• Email:
  inkyu.han@temple.edu
• Federal Fiscal Year:
  2022
• Performing Organization:
  University of Texas Health Science Center, Houston
• Peer Reviewed:
  True
• Start Date:
  20050701
• Source Full Name:
  International Journal of Environmental Research and Public Health
• End Date:
  20250630
• Collection(s):
  National Institute for Occupational Safety and Health
• Main Document Checksum:
  urn:sha-512:fe63acbd783066b5d7de6fa4162c898bd53d9890d09fd3c761356c943198be80904c7c47b88ecdfda06f9787486b552e9df666285e94a6017710b2e0dfba952c
• Download URL:
  https://stacks.cdc.gov/view/cdc/249457/cdc_249457_DS1.pdf
• File Type:
  [PDF - 2.98 MB ]