Lung function was measured on 1811 children from 8 Southern Californian communities. Exposure to regional ozone (O3), NO2, particulate matter with aerodynamic diameter less than 10 µm (PM10) and 2.5 µm (PM2.5) was measured continuously at community monitors.
Image: Early Morning traffic, Irkutsk, Siberia, Russia.
An increase in near-roadway total nitrogen oxides (NOx) of 17.9 ppb was associated with deficits of 1.6% in forced vital capacity (FVC) (p=0.005) and 1.1% in forced expiratory volume in 1 s (FEV1) (p=0.048).
Residential proximity to a freeway was associated with a reduction in FVC. Lung function deficits of 2–3% were associated with regional PM10 and PM2.5 (FVC and FEV1) and with O3 (FEV1).
NRAP and regional air pollution have independent adverse effects on childhood lung function.
References:
Associations of children's lung function with ambient air pollution: joint effects of regional and near-roadway pollutants. Robert Urman et al. Thorax doi:10.1136/thoraxjnl-2012-203159
http://thorax.bmj.com/content/early/2013/11/19/thoraxjnl-2012-203159.short
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