Real-World Effectiveness of Portable Air Cleaners in Reducing Home Particulate Matter Concentrations.

Autor: Lu FT; Environmental and Occupational Health Sciences Institute, Rutgers University, Piscataway, NJ, USA., Laumbach RJ; Environmental and Occupational Health Sciences Institute, Rutgers University, Piscataway, NJ, USA.; Department of Environmental and Occupational Health and Justice, School of Public Health, Rutgers University, Piscataway, NJ, USA., Legard A; Environmental and Occupational Health Sciences Institute, Rutgers University, Piscataway, NJ, USA., Myers NT; Environmental and Occupational Health Sciences Institute, Rutgers University, Piscataway, NJ, USA.; Department of Environmental Sciences, School of Environmental and Biological Sciences, Rutgers University, New Brunswick, NJ, USA., Black KG; Environmental and Occupational Health Sciences Institute, Rutgers University, Piscataway, NJ, USA., Ohman-Strickland P; Environmental and Occupational Health Sciences Institute, Rutgers University, Piscataway, NJ, USA.; Department of Biostatistics and Epidemiology, School of Public Health, Rutgers University, Piscataway, NJ, USA., Alimokhtari S; Environmental and Occupational Health Sciences Institute, Rutgers University, Piscataway, NJ, USA., de Resende A; Environmental and Occupational Health Sciences Institute, Rutgers University, Piscataway, NJ, USA., Calderón L; Environmental and Occupational Health Sciences Institute, Rutgers University, Piscataway, NJ, USA.; Department of Environmental Sciences, School of Environmental and Biological Sciences, Rutgers University, New Brunswick, NJ, USA., Mainelis G; Environmental and Occupational Health Sciences Institute, Rutgers University, Piscataway, NJ, USA.; Department of Environmental Sciences, School of Environmental and Biological Sciences, Rutgers University, New Brunswick, NJ, USA., Kipen HM; Environmental and Occupational Health Sciences Institute, Rutgers University, Piscataway, NJ, USA.; Department of Environmental and Occupational Health and Justice, School of Public Health, Rutgers University, Piscataway, NJ, USA.
Jazyk: angličtina
Zdroj: Aerosol and air quality research [Aerosol Air Qual Res] 2024 Jan; Vol. 24 (1). Date of Electronic Publication: 2023 Nov 22.
DOI: 10.4209/aaqr.230202
Abstrakt: Portable air cleaners (PACs) equipped with HEPA filters are gaining attention as cost-effective means of decreasing indoor particulate matter (PM) air pollutants and airborne viruses. However, the performance of PACs in naturalistic settings and spaces beyond the room containing the PAC is not well characterized. We conducted a single-blinded randomized cross-over interventional study between November 2020 and May 2021 in the homes of adults who tested positive for COVID-19. The intervention was air filtration with PAC operated with the HEPA filter set installed ("filter" condition) versus removed ("sham" condition, i.e., control). Sampling was performed in 29 homes for two consecutive 24-hour periods in the primary room (containing the PAC) and a secondary room. PAC effectiveness, calculated as reductions in overall mean PM 2.5 and PM 10 concentrations during the filter condition, were for the primary rooms 78.8% and 63.9% (n = 23), respectively, and for the secondary rooms 57.9% and 60.4% (n = 22), respectively. When a central air handler (CAH) was reported to be in use, filter-associated reductions of PM were statistically significant during the day (06:00-22:00) and night (22:01-05:59) in the primary rooms but only during the day in the secondary rooms. Our study adds to the literature evaluating the real-world effects of PACs on a secondary room and considering the impact of central air systems on PAC performance.
Databáze: MEDLINE
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