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PM2.5 Is Insufficient to Explain Personal PAH Exposure

Journal Article · · GeoHealth
DOI:https://doi.org/10.1029/2023gh000937· OSTI ID:2299503
 [1];  [2];  [2];  [2];  [3];  [2];  [4];  [5];  [2]
  1. Pacific Northwest National Laboratory (PNNL), Richland, WA (United States)
  2. Oregon State University, Corvallis, OR (United States)
  3. Icahn School of Medicine at Mount Sinai, New York, NY (United States)
  4. Columbia University, New York, NY (United States)
  5. Pacific Northwest National Laboratory (PNNL), Richland, WA (United States): Oregon State University, Corvallis, OR (United States)
To understand how chemical exposure can impact health, researchers need tools that capture the complexities of personal chemical exposure. In practice, fine particulate matter (PM2.5) air quality index (AQI) data from outdoor stationary monitors and Hazard Mapping System (HMS) smoke density data from satellites are often used as proxies for personal chemical exposure, but do not capture total chemical exposure. Silicone wristbands can quantify more individualized exposure data than stationary air monitors or smoke satellites. However, it is not understood how these proxy measurements compare to chemical data measured from wristbands. In this study, participants wore daily wristbands, carried a phone that recorded locations, and answered daily questionnaires for a 7-day period in multiple seasons. We gathered publicly available daily PM2.5 AQI data and HMS data. We analyzed wristbands for 94 organic chemicals, including 53 polycyclic aromatic hydrocarbons. Wristband chemical detections and concentrations, behavioral variables (e.g., time spent indoors), and environmental conditions (e.g., PM2.5 AQI) significantly differed between seasons. Machine learning models were fit to predict personal chemical exposure using PM2.5 AQI only, HMS only, and a multivariate feature set including PM2.5 AQI, HMS, and other environmental and behavioral information. On average, the multivariate models increased predictive accuracy by approximately 70% compared to either the AQI model or the HMS model for all chemicals modeled. This study provides evidence that PM2.5 AQI data alone or HMS data alone is insufficient to explain personal chemical exposures. Our results identify additional key predictors of personal chemical exposure.
Research Organization:
Pacific Northwest National Laboratory (PNNL), Richland, WA (United States)
Sponsoring Organization:
USDOE Office of Science (SC); National Institute of Environmental Health Sciences (NIEHS); ARCS Foundation
Grant/Contract Number:
AC05-76RL01830
OSTI ID:
2299503
Report Number(s):
PNNL-SA--184349
Journal Information:
GeoHealth, Journal Name: GeoHealth Journal Issue: 2 Vol. 8; ISSN 2471-1403
Publisher:
American Geophysical Union - WileyCopyright Statement
Country of Publication:
United States
Language:
English

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