Several indoor and outdoor microenvironments were sampled.
Indoor environments included 81 homes, 30 offices, 11 pubs, 7restaurants, 2 libraries, 2 museums. Pubs were sampled before the
smoking ban came into force in England. Homes and workplaces were
sampled among the subjects participating in the MATCH (Measurement
and modelling of Air Toxic Concentrations for Health effect
studies) Project (Harrison et al., 2009). Outdoor environments
included 44 traffic roadsides, 26 background streets, 12 pedestrian
streets and 8 parks. All samples were collected onto filters using active
sampling. Details on the sampler description, sampling duration,
sampling times, flow rates and list of compounds sampled are
described in the Supplemental Material.