What Interaction Does Indoor Nitrogene Dioxide Have on the Effect of the Automobile Exhaust

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An attempt was made to investigate the effefcts of automobile exhaust to the people living alongside major traffic arterial in Tokyo. Several hundreds of houswives aged from 40 to 59 who lived more than 3 years were sampled both from the area A; within 20m from road side, and from the area B which extended from 20m to 150m along the road next to the area A. ATS-DLD questionaire was used to check the prevalence of respiratiory symptom, its results was analysed with a deliberate considderation on smoking habits and using status of unvented kerosene space heater. Among each symptom prevalence, difference between the area A and the B was observed significantly in symptom rate related persistent cough and phlegm. These differences became much distinguished in non-smoking group and people not using unvented heater. For about one tenth of sample subject, joined the study of measurement of personal exposure to NO_2 for 24hr using NO_2 filter badge. The average concentration of exposure depends largely on heater using status but does not on the study area, even though the atmosphric concentration of NO_2 in the area A was higher than that of the area B. The difference of symtom prevalence between the study area becomes not significant compared with the group of using unvented heater. This means that, we suppose, the substantial higher symptom prevalence which observed in the area along the roadside is masked by repeated exposure to elevated indoor concentration of NO_2 resulted from using kerosene space heater.
東海大学の論文
1984-01-26

What Interaction Does Indoor Nitrogene Dioxide Have on the Effect of the Automobile Exhaust

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