Lessons from in-home air filtration intervention trials to reduce urban ultrafine particle number concentrations.

ABSTRACT:

Background

Exposure to airborne ultrafine particle (UFP; <100 nm in aerodynamic diameter) is an emerging public health problem. Nevertheless, the benefit of using high efficiency particulate arrestance (HEPA) filtration to reduce UFP concentrations in homes is not yet clear.

Methods

We conducted a randomized crossover study of HEPA filtration without a washout period in 23 homes of low-income Puerto Ricans in Boston and Chelsea, MA (USA). Most participants were female, older adults who were overweight or obese. Particle number concentrations (PNC, a proxy for UFP) were measured indoors and outdoors at each home continuously for six weeks. Homes received both HEPA filtration and sham filtration for three weeks each in random order.

Results

Median PNC under HEPA filtrat

SUBMITTER: Brugge D 

PROVIDER: S-EPMC5791918 | biostudies-literature | 2017 Dec

REPOSITORIES: biostudies-literature