Toward refined estimates of ambient PM_2.5 exposure: Evaluation of a physical outdoor-to-indoor transport model.

ABSTRACT: Because people spend the majority of their time indoors, the variable efficiency with which ambient PM_2.5 penetrates and persists indoors is a source of error in epidemiologic studies that use PM_2.5 concentrations measured at central-site monitors as surrogates for ambient PM_2.5 exposure. To reduce this error, practical methods to model indoor concentrations of ambient PM_2.5 are needed. Toward this goal, we evaluated and refined an outdoor-to-indoor transport model using measured indoor and outdoor PM_2.5 species concentrations and air exchange rates from the Relationships of Indoor, Outdoor, and Personal Air Study. Herein, we present model evaluation results, discuss what data are most critical to prediction of residential exposures at

SUBMITTER: Hodas N 

PROVIDER: S-EPMC4363742 | biostudies-literature | 2014 Feb

REPOSITORIES: biostudies-literature