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Nitrogen Dioxide in the Home: Cooking, Double Glazing or Outdoor Air?

Institute of Environmental and Policy Analysis, University of Huddersfield, Huddersfield, UK

Simon Kingham

Institute of Environmental and Policy Analysis, University of Huddersfield, Huddersfield, UK

There is substantial evidence linking nitrogen dioxide exposure to ill-health, and research has suggested that one of the main areas of exposure is in the home. The study described here was carried out to assess the levels of nitrogen dioxide inside homes and investigate the factors affecting those levels. Moni toring of nitrogen dioxide was carried out using passive diffusion samplers (Palme's tubes) in 40 houses in Huddersfield over three consecutive two-week periods in late 1994. Half the houses were located close to a busy main road and half on residential roads set back and parallel to the main road. The sam ple was split so that half had gas cookers and half had electric cookers. These subsets were split again so that half had double glazing and half had single- glazed windows. At each house a sampler was placed in the kitchen, living room, bedroom and outside. It was found that while gas cookers had a signifi cant effect on indoor levels of nitrogen dioxide, window type and proximity to a main road have little.

Key Words: Nitrogen dioxide • Gas cookers • Double glazing • Passive sampling • Palme's tubes

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