Real-time indoor PM_2.5 monitoring in an urban cohort: Implications for exposure disparities and source control.

ABSTRACT: Fine particulate matter (PM_2.5) concentrations are highly variable indoors, with evidence for exposure disparities. Real-time monitoring coupled with novel statistical approaches can better characterize drivers of elevated PM_2.5 indoors. We collected real-time PM_2.5 data in 71 homes in an urban community of Greater Boston, Massachusetts using Alphasense OPC-N2 monitors. We estimated indoor PM_2.5 concentrations of non-ambient origin using mass balance principles, and investigated their associations with indoor source activities at the 0.50 to 0.95 exposure quantiles using mixed effects quantile regressions, overall and by homeownership. On average, the majority of indoor PM_2.5 concentrations were of non-ambient origin (≥77%), with a hig

SUBMITTER: Chu MT 

PROVIDER: S-EPMC7856294 | biostudies-literature | 2021 Feb

REPOSITORIES: biostudies-literature