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Article Abstract
Introduction: Household air pollution from cooking-related biomass combustion remains a leading risk factor for global health. Black carbon (BC) is an important component of particulate matter (PM) in household air pollution. We evaluated the impact of the engineered, wood-burning stove intervention on BC concentrations.
Methods: We conducted a 3-year stepped-wedge randomized controlled trial with 6 repeated visits among 230 female primary cooks in rural Honduras. Participants used traditional stoves at baseline and were randomized to receive the after visit 2 or after visit 4. At each visit, we measured 24-hour gravimetric personal and kitchen fine PM (PM) concentrations and estimated BC mass concentrations (Sootscan Transmissometer). We conducted intent-to-treat analyses using linear mixed models with natural log-transformed 24-hour personal and kitchen BC.
Results: BC concentrations were reduced for households assigned to the vs. traditional stoves: e.g., personal BC geometric mean (GSD), 3.6 μg/m (6.4) vs. 11.5 μg/m (4.6), respectively. Following the intervention, we observed 53% (95% CI: 35-65%) lower geometric mean personal BC concentrations and 76% (95% CI: 66-83%) lower geometric mean kitchen BC concentrations.
Conclusions: The stove intervention substantially reduced BC concentrations, mitigating household air pollution and potentially benefitting human and climate health.
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| http://www.ncbi.nlm.nih.gov/pmc/articles/PMC10688445 | PMC |
| http://dx.doi.org/10.1021/acs.estlett.2c00098 | DOI Listing |
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