Personal exposure of children to nitrogen dioxide
- Dipartimento di Scienze Mediche
- Facoltà di Medicina e Chirurgia di Novara
- Università del Piemonte Orientale, Cattedra di Igiene, Via Solaroli 17, 28100 Novara, Italy
- Dr M Panella panella{at}med.unipmn.it
We read with interest a recently published study on personal exposure of asthmatic children to nitrogen dioxide (NO2), relative to concentrations in outdoor air.1 In their results, the authors did not find:
“ . . .significant correlation . . . between each child's weekly mean personal exposures and mean outdoor concentrations for the corresponding periods”;
“ . . .marked evidence of seasonality” on personal exposure .
They concluded: “ . . .at low concentrations, changes in NO2 in outdoor air . . .contribute little to variations …
