Abstract

The fleece and shelf factors are proposed as determinants for indoor particulate matter. The aims of the present study were to describe the distribution of residential air concentrations of PM 10 and PM 2.5, and estimate the degree of association between the concentrations of particulate matter and the fleece and shelf factors as well as other home variables. No correlation was found between the measured residential PM 10 and PM 2.5 concentrations and proposed predictors (shelf factor, fleece factor, and their product). Thus, the fleece and shelf factors do not seem to be good predictors of suspended particulate matter in dwellings. This study has, in addition to outdoor particulate matter concentration, identified indoor cigarette smoking, presence of hot wire convection heaters and ventilation rate as important indoor factors influencing PM 10 and PM 2.5 in Norwegian dwellings.

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