Fine and ultrafine particle decay rates in multiple homes.
Lance Wallace, Warren Kindzierski, Jill Kearney, Morgan MacNeill, Marie-Ève Héroux, Amanda J Wheeler
Environ Sci Technol | Published : 2013
Human exposure to particles depends on particle loss mechanisms such as deposition and filtration. Fine and ultrafine particles (FP and UFP) were measured continuously over seven consecutive days during summer and winter inside 74 homes in Edmonton, Canada. Daily average air exchange rates were also measured. FP were also measured outside each home and both FP and UFP were measured at a central monitoring station. A censoring algorithm was developed to identify indoor-generated concentrations, with the remainder representing particles infiltrating from outdoors. The resulting infiltration factors were employed to determine the continuously changing background of outdoor particles infiltratin..View full abstract