A physical compartmental model (INTAIR) has been pa rameterised to estimate PM10 concentrations and has been used to assess the contribution of smoking to PM10 levels for typical homes in the UK. The results suggest that smoking activity at home increases the daily mean concentrations in the living room by 1-1.5 μg.m-3 per cigarette smoked, and may contribute significantly to personal exposures to PM10. The model simulations demonstrate that the contribution of smoking to daily mean concentrations is highly dependent on the air exchange rate between the room and outdoors.
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