The Effects of Ventilation and Filtration on Indoor PM_2.5 in Office Buildings in Four Countries.

ABSTRACT: Fine particulate matter (PM_2.5) is an airborne pollutant associated with negative acute and chronic human health outcomes. Although the majority of PM_2.5 research has focused on outdoor exposures, people spend the majority of their time indoors, where PM_2.5 of outdoor origin can penetrate. In this work, we measured indoor PM_2.5 continuously for one year in 37 urban commercial offices with mechanical or mixed-mode ventilation in China, India, the United Kingdom, and the United States. We found that indoor PM_2.5 concentrations were generally higher when and where outdoor PM_2.5 was elevated. In India and China, mean workday indoor PM_2.5 levels exceeded the World Health Organization's 24-hour exposure guideline of 25

SUBMITTER: Jones ER 

PROVIDER: S-EPMC8336933 | biostudies-literature | 2021 Aug

REPOSITORIES: biostudies-literature