Size distribution and lung‐deposited doses of particulate matter from household exposure to biomass smoke
File(s)
Accepted version
Author(s)
Nicolaou, Laura
Fandiño‐Del‐Rio, Magdalena
Koehler, Kirsten
Checkley, William
Type
Journal Article
Abstract
Exposure to high concentrations of particulate matter (PM) is associated with a number of adverse health effects. However, it is unclear which aspects of PM are most hazardous, and a better understanding of particle sizes and personal exposure is needed. We characterized particle size distribution (PSD) from biomass‐related pollution and assessed total and regional lung‐deposited doses using multiple‐path deposition modeling. Gravimetric measurements of kitchen and personal PM2.5 (< 2.5 µm in size) exposures were collected in 180 households in rural Puno, Peru. Direct‐reading measurements of number concentrations were collected in a subset of 20 kitchens for particles 0.3–25 µm, and the continuous PSD was derived using a nonlinear least‐squares method. Mean daily PM2.5 kitchen concentration and personal exposure was 1205±942 µg/m3 and 115±167 µg/m3 respectively, and the mean mass concentration consisted of a primary accumulation mode at 0.21 µm and a secondary coarse mode at 3.17 µm. Mean daily lung‐deposited surface area (LDSA) and LDSA during cooking were 1009.6±1469.8 µm2/cm3 and 10,552.5±8261.6 µm2/cm3, respectively. This study presents unique data regarding lung deposition of biomass smoke that could serve as a reference for future studies, and provides a novel, more biologically‐relevant metric for exposure‐response analysis compared to traditional size‐based metrics.
Date Issued
2021-01-01
Date Acceptance
2020-06-26
Citation
Indoor Air, 2021, 31 (1), pp.51-62
ISSN
0905-6947
Publisher
Wiley
Start Page
51
End Page
62
Journal / Book Title
Indoor Air
Volume
31
Issue
1
Copyright Statement
This article is protected by copyright. All rights reserved.
Identifier
https://onlinelibrary.wiley.com/doi/abs/10.1111/ina.12710
Subjects
Building & Construction
04 Earth Sciences
09 Engineering
11 Medical and Health Sciences
Publication Status
Published
Date Publish Online
2020-07-03