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Atmosphere
Volume 12
Issue 7
10.3390/atmos12070911
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Article

Chemical Composition of PM2.5 in Wood Fire and LPG Cookstove Homes of Nepali Brick Workers

by
James D. Johnston
1,*,
John D. Beard
1,
Emma J. Montague
1,
Seshananda Sanjel
2,
James H. Lu
1,
Haley McBride
1,
Frank X. Weber
3 and
Ryan T. Chartier
3
1
Department of Public Health, Brigham Young University, Provo, UT 84602, USA
2
Department of Community Medicine & Public Health, Karnali Academy of Health Sciences, Jumla 21200, Nepal
3
RTI International, Research Triangle Park, NC 27709, USA
*
Author to whom correspondence should be addressed.
Atmosphere 2021, 12(7), 911; https://doi.org/10.3390/atmos12070911
Submission received: 25 June 2021 / Revised: 11 July 2021 / Accepted: 12 July 2021 / Published: 15 July 2021
(This article belongs to the Special Issue Assessing Atmospheric Pollution and Its Impacts on the Human Health)
Versions Notes

Abstract

Household air pollution is a major cause of morbidity and mortality worldwide, largely due to particles ≤ 2.5 µm (PM2.5). The toxicity of PM2.5, however, depends on its physical properties and chemical composition. In this cross-sectional study, we compared the chemical composition of PM2.5 in brick workers’ homes (n = 16) based on use of wood cooking fire or liquefied petroleum gas (LPG) cookstoves. We collected samples using RTI International particulate matter (PM) exposure monitors (MicroPEMs). We analyzed filters for 33 elements using energy-dispersive X-ray fluorescence and, for black (BC) and brown carbon (BrC), integrating sphere optical transmittance. Wood fire homes had significantly higher concentrations of BC (349 µg/m3) than LPG homes (6.27 µg/m3, p < 0.0001) or outdoor air (5.36 µg/m3, p = 0.002). Indoor chlorine in wood fire homes averaged 5.86 µg/m3, which was approximately 34 times the average level in LPG homes (0.17 µg/m3, p = 0.0006). Similarly, potassium in wood fire homes (4.17 µg/m3) was approximately four times the level in LPG homes (0.98 µg/m3, p = 0.001). In all locations, we found aluminum, calcium, copper, iron, silicon, and titanium in concentrations exceeding those shown to cause respiratory effects in other studies. Our findings suggest the need for multi-faceted interventions to improve air quality for brick workers in Nepal.
Keywords: household air pollution; fine particulate matter; international environmental health; cookstove; respiratory disease; brick worker household air pollution; fine particulate matter; international environmental health; cookstove; respiratory disease; brick worker

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MDPI and ACS Style

Johnston, J.D.; Beard, J.D.; Montague, E.J.; Sanjel, S.; Lu, J.H.; McBride, H.; Weber, F.X.; Chartier, R.T. Chemical Composition of PM2.5 in Wood Fire and LPG Cookstove Homes of Nepali Brick Workers. Atmosphere 2021, 12, 911. https://doi.org/10.3390/atmos12070911

AMA Style

Johnston JD, Beard JD, Montague EJ, Sanjel S, Lu JH, McBride H, Weber FX, Chartier RT. Chemical Composition of PM2.5 in Wood Fire and LPG Cookstove Homes of Nepali Brick Workers. Atmosphere. 2021; 12(7):911. https://doi.org/10.3390/atmos12070911

Chicago/Turabian Style

Johnston, James D., John D. Beard, Emma J. Montague, Seshananda Sanjel, James H. Lu, Haley McBride, Frank X. Weber, and Ryan T. Chartier. 2021. "Chemical Composition of PM2.5 in Wood Fire and LPG Cookstove Homes of Nepali Brick Workers" Atmosphere 12, no. 7: 911. https://doi.org/10.3390/atmos12070911

APA Style

Johnston, J. D., Beard, J. D., Montague, E. J., Sanjel, S., Lu, J. H., McBride, H., Weber, F. X., & Chartier, R. T. (2021). Chemical Composition of PM2.5 in Wood Fire and LPG Cookstove Homes of Nepali Brick Workers. Atmosphere, 12(7), 911. https://doi.org/10.3390/atmos12070911

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