This paper presents some of the results of an air filtration-based intervention study carried out in 21 apartments situated near busy traffic streets. The aim of the study was to identify positive health effects of air filtration in an elderly population. The air change rates and indoor particle concentrations were measured continuously during two consecutive periods of 48 hours. Each apartment was equipped with two filter units, one located in the bedroom and one in the living room. Particles were removed by filtration during one of the exposure periods. Periods without filtration during which candle-burning was the only significant indoor source of particles were identified; this occurred in three apartments. The deposition rates of particles were calculated based on air change rate and the decay period after the candles had been put out and related to the fraction of floor area covered with carpets. Results showed that the amount of carpet on the floor was significantly correlated with particle deposition in the apartments.
|Number of pages||6|
|Publication status||Published - 2008|