Indoor air quality in inner-city schools and its associations with building characteristics and environmental factors.

ABSTRACT: Indoor concentrations of fine particulate matter (PM_2.5), nitrogen dioxide (NO₂), and carbon monoxide (CO) were measured across 16 urban public schools in three different seasons. Exceedance of the WHO guidelines for indoor air was observed, mainly for the hourly average NO₂ concentrations. Seasonal variability was statistically significant for indoor NO₂ and CO concentrations, with higher exposures in fall and winter. An extensive list of potential factors at the outdoor environment, school, and room level that may explain the variability in indoor exposure was examined. Factors with significant contributions to indoor exposure were mostly related to the outdoor pollution sources. This is evidenced by the strong associations between indoor conce

SUBMITTER: Majd E 

PROVIDER: S-EPMC6360122 | biostudies-literature | 2019 Mar

REPOSITORIES: biostudies-literature