Field Calibrations of a Low-Cost Aerosol Sensor at a Regulatory Monitoring Site in California

Details

• Personal Author:
  Holstius DM ; Pillarisetti A ; Seto E ; Smith KR
• Description:
  Health effects attributed to ambient fine particulate matter (PM2.5) now rank it among the risk factors with the highest health burdens in the world, but existing monitoring infrastructure cannot adequately characterize spatial and temporal variability in urban PM2.5 concentrations, nor in human population exposures. The development and evaluation of more portable and affordable monitoring instruments based on low-cost sensors may offer a means to supplement and extend existing infrastructure, increasing the density and coverage of empirical measurements and thereby improving exposure science and control. Here, we report on field calibrations of a custom-built, battery-operated aerosol monitoring instrument we developed using low-cost, off-the-shelf optical aerosol sensors. We calibrated our instruments using 1 h and 24 h PM2.5 data from a class III US EPA Federal Equivalent Method (FEM) PM2.5 B-attenuation monitor in continuous operation at a regulatory monitoring site in Oakland, California. We observed negligible associations with ambient humidity and temperature; linear corrections were sufficient to explain 60% of the variance in 1 h reference PM2.5 data and 72% of the variance in 24 h data. Performance at 1 h integration times was comparable to commercially available optical instruments costing considerably more. These findings warrant further exploration of the circumstances under which this class of aerosol sensors may profitably be deployed to generate improved PM2.5 data sets. [Description provided by NIOSH]
• Subjects:
  Aerosols Air Pollution Environmental Monitoring Epidemiology Occupational Health Particulate Matter Safety
• Keywords:
  Aerosol Particles Air Monitoring Air Pollution Air Sampling Measurement Equipment Particulates Sensors
• ISSN:
  1867-1381
• Document Type:
  Text
• Funding:
  Grant
• Genre:
  Journal Article
• Place as Subject:
  California ; OSHA Region 10 ; OSHA Region 9 ; Washington
• CIO:
  National Institute for Occupational Safety and Health (NIOSH)
• Topic:
  Workplace Safety & Health
• Location:
  North America
• Volume:
  7
• Issue:
  4
• NIOSHTIC Number:
  nn:20054710
• Citation:
  Atmos Meas Tech 2014 Apr; 7(4):1121-1131
• Contact Point Address:
  D. M. Holstius, University of California, Berkeley, USA
• Email:
  david.holstius@berkeley.edu
• Federal Fiscal Year:
  2014
• Performing Organization:
  University of Washington
• Peer Reviewed:
  True
• Start Date:
  20050701
• Source Full Name:
  Atmospheric Measurement Techniques
• End Date:
  20250630
• Collection(s):
  National Institute for Occupational Safety and Health
• Main Document Checksum:
  urn:sha-512:20860413ec00cbc00368a112795b98362a1312b0fab3541826d3097d62b5d756cd90544f7210f93c693f349ad18134a4f87241e14d45d712b6763ee66569c701
• Download URL:
  https://stacks.cdc.gov/view/cdc/217160/cdc_217160_DS1.pdf
• File Type:
  [PDF - 656.05 KB ]