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Indoor air pollution in low-income countries - assessment and characterization of particulate matter from cooking with solid biofuels

Eriksson, Axel LU orcid ; Abera, Asmamaw ; Malmqvist, Ebba LU orcid and Isaxon, Christina LU (2024) 18th International Conference on Indoor Air Quality and Climate, INDOOR AIR 2024
Abstract

Based on field measurements in 26 Ethiopian homes, we have estimated an average indoor air exchange rate (AER). In laboratory settings, using on-line methods, we have burned common solid biofuels (charcoal, wood, cow dung, crops residue) in a traditional way, thereby generated airborne particles, and assessed various aerosol characteristics. All the fuels generated PM2.5 (particles smaller than 2.5 µm) concentrations at AER 14 h-1 by far exceeding the WHO guidelines. Fuels with lower energy density, such as dung, emitted orders of magnitude more PM2.5 than, for example, charcoal. Almost all emitted particles were smaller than 300 nm, sizes with high deposition probability in the alveoli tract. Chemically, the particles... (More)

Based on field measurements in 26 Ethiopian homes, we have estimated an average indoor air exchange rate (AER). In laboratory settings, using on-line methods, we have burned common solid biofuels (charcoal, wood, cow dung, crops residue) in a traditional way, thereby generated airborne particles, and assessed various aerosol characteristics. All the fuels generated PM2.5 (particles smaller than 2.5 µm) concentrations at AER 14 h-1 by far exceeding the WHO guidelines. Fuels with lower energy density, such as dung, emitted orders of magnitude more PM2.5 than, for example, charcoal. Almost all emitted particles were smaller than 300 nm, sizes with high deposition probability in the alveoli tract. Chemically, the particles changes over time, with organic emissions peaking early in the process. Chemical composition is also different for different fuels. Assessing indoor exposure levels without having to use emission factors facilitate epidemiological studies, and detailed chemistry is important to consider in toxicological assessments.

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author
; ; and
organization
publishing date
type
Chapter in Book/Report/Conference proceeding
publication status
published
subject
keywords
Aerosol mass spectrometry, Air exchange, particle dynamics, Sub-Saharan Africa
host publication
18th Conference of the International Society of Indoor Air Quality and Climate, INDOOR AIR 2024 - Conference Program and Proceedings
publisher
International Society of Indoor Air Quality and Climate (ISIAQ)
conference name
18th International Conference on Indoor Air Quality and Climate, INDOOR AIR 2024
conference location
Honolulu, United States
conference dates
2024-07-07 - 2024-07-11
external identifiers
  • scopus:85210897026
ISBN
9798331306816
language
English
LU publication?
yes
id
114aa302-1207-4d32-ab90-e35ad2ef37f0
date added to LUP
2025-01-27 14:21:02
date last changed
2025-04-04 15:16:24
@inproceedings{114aa302-1207-4d32-ab90-e35ad2ef37f0,
  abstract     = {{<p>Based on field measurements in 26 Ethiopian homes, we have estimated an average indoor air exchange rate (AER). In laboratory settings, using on-line methods, we have burned common solid biofuels (charcoal, wood, cow dung, crops residue) in a traditional way, thereby generated airborne particles, and assessed various aerosol characteristics. All the fuels generated PM2.5 (particles smaller than 2.5 µm) concentrations at AER 14 h<sup>-1</sup> by far exceeding the WHO guidelines. Fuels with lower energy density, such as dung, emitted orders of magnitude more PM2.5 than, for example, charcoal. Almost all emitted particles were smaller than 300 nm, sizes with high deposition probability in the alveoli tract. Chemically, the particles changes over time, with organic emissions peaking early in the process. Chemical composition is also different for different fuels. Assessing indoor exposure levels without having to use emission factors facilitate epidemiological studies, and detailed chemistry is important to consider in toxicological assessments.</p>}},
  author       = {{Eriksson, Axel and Abera, Asmamaw and Malmqvist, Ebba and Isaxon, Christina}},
  booktitle    = {{18th Conference of the International Society of Indoor Air Quality and Climate, INDOOR AIR 2024 - Conference Program and Proceedings}},
  isbn         = {{9798331306816}},
  keywords     = {{Aerosol mass spectrometry; Air exchange; particle dynamics; Sub-Saharan Africa}},
  language     = {{eng}},
  publisher    = {{International Society of Indoor Air Quality and Climate (ISIAQ)}},
  title        = {{Indoor air pollution in low-income countries - assessment and characterization of particulate matter from cooking with solid biofuels}},
  year         = {{2024}},
}