Personal exposures of children to nitrogen dioxide relative to concentrations in outdoor air.

ABSTRACT:

Objectives

To investigate the relation between fluctuations in personal exposure to nitrogen dioxide (NO(2)) in school children and changes in outdoor NO(2) concentrations.

Methods

114 Asthmatic school children aged 7-12 years were recruited from the Southampton area. Weekly average personal exposures to NO(2) were measured over a 13 month period with passive diffusion tubes. At the same time, outdoor NO(2) concentrations were monitored at a fixed site in the centre of Southampton. Correlations between weekly personal exposures and mean outdoor concentrations during the same periods were examined.

Results

Mean duration of follow up was 32 weeks. Measurements of weekly mean personal NO(2) exposures were generally low and ranged from 2.47 to 1751 [corrected] micrograms/

SUBMITTER: Linaker CH 

PROVIDER: S-EPMC1739973 | biostudies-literature | 2000 Jul

REPOSITORIES: biostudies-literature