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Nitrogen dioxide exposure studies. Volume 5. Personal exposure to nitrogen dioxide in the Los Angeles basin: A microenvironmental approach. Topical report

Technical Report ·
OSTI ID:6793990
; ;
As a component of a cross-sectional NO2 exposure study on 700 individuals living in the Los Angeles, California, area, a more detailed longitudinal study was carried out on 67 participants. Participants in the microenvironmental study were monitored for 24h and 48h NO2 exposures up to 8 times over a year. Participants wore personal NO2 passive sampling badges for 24h and exposed separate badges to sample indoor home and away-from-home NO2 concentrations. Seasonal variations in outdoor, indoor, and personal exposures were apparent. Concentrations away from home averaged 7 to 30 ppb, depending on the cycle, higher than the at-home concentrations. Personal exposures of participants who cooked with gas averaged 10ppb to 28 ppb higher than those without gas. Between 68 percent to 80 percent of the variations in personal exposures were predicted by linear regression models that included bedroom NO2 and outdoor (home) NO2 concentrations.
Research Organization:
Harvard Univ., Boston, MA (United States). School of Public Health
OSTI ID:
6793990
Report Number(s):
PB-93-170876/XAB; CNN: GRI-5082-251-0739
Country of Publication:
United States
Language:
English

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