Free radicals by-products of air pollution in Australian households
Year: 2023
Type: conference-abstract
Abstract: BACKGROUND AND AIM: The association between air pollution and adverse health outcomes has been extensively studied, but the causal mechanism is still in discovery. Emerging evidence proposes environmentally persistent free radicals (EPFRs) as the missing connection between air pollution and detrimental health impacts. Our study aims to assess the presence of environmentally persistent free radicals in household dust and discover which household characteristics are predictive of EPFRs. METHOD: This study recruited 24 participants previously enrolled in the Early Life Lung Function cohort. Household characteristics were measured through an online survey and confirmed through researcher observation. Dust was collected from the vacuum and EPFRs concentration were measured by electromagnetic resonance spin. Home visits were in winter and summer to assess seasonal differences. One household was lost to follow-up, resulting in 47 observations in total. Regression random forest was performed to ascertain which household characteristics predict concentration of EPFRs. RESULTS: Household smoking was an important predictor of EPFRs concentration. In addition, characteristics of the home, such as the age of the house and the type of garage were found to be important. These household characteristics may suggest the penetration of outdoor air, potentially justifying the importance of indoor NO2 and PM2.5 concentration in predicting EPFRs concentration. Frequency of cleaning surfaces around the house, type of cooling method used in child’s bedroom and season of the home visits also demonstrated to be important predictors of EPFRs concentration in Australian homes. CONCLUSIONS: These findings are important in understanding which household factors are linked to harmful air pollutant by-products in Australian homes. With such understanding, changes in household behaviours and home ventilation standards can be made to improve air quality in homes, ultimately protecting the population from adverse respiratory health outcomes.
Source: ISEE Conference Abstracts
Institutions: The University of Queensland, Louisiana State University
Language: English
Subfield: Health, Toxicology and Mutagenesis
Field: Environmental Science
Domain: Physical Sciences
Open Access status: diamond
OpenAlex ID: W4390965104