1988 Fiscal Year Final Research Report Summary
An epidemiological study on the personal exposure level of nitrogen dioxide and behavior pattern
| Project/Area Number |
61570279
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| Research Category |
Grant-in-Aid for General Scientific Research (C)
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| Allocation Type | Single-year Grants |
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| Research Field |
公衆衛生学
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| Research Institution | School of Medicine, Tokai University |
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Principal Investigator |
KASUGA Hitoshi Professor, Dept. of Public Health, School of Medicine, Tokai University, 医学部公衆衛生学教室, 教授 (60096211)
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| Co-Investigator(Kenkyū-buntansha) |
OSAKA Fumio Assistant Prof., Dept. of Public Health, School of Med., Tokai University, 医学部公衆衛生学教室, 講師 (70096204)
MATSUKI Hideaki Assistant Prof., Dept. of Public Health, School of Med., Tokai University, 医学部公衆衛生学教室, 講師 (90096264)
SUGITA Minoru Associate Prof., Dept. of Public Health, School of Med., Tokai University, 医学部公衆衛生学教室, 助教授 (80051845)
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| Project Period (FY) |
1986 – 1988
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| Keywords | Indoor NO_2 concentration / Personal exposure of nitrogen dioxide / Seasonal differences / Heating type / 調理器具 |
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| Research Abstract |
Personal exposure to nitrogen dioxide of children and mothers were measured and NO_2 concentration in thier home and outdoor were also measured in winter and in summer. The mothers were asked to keep a diary of the activities of her and her child during that day and of the time that the heating appliances, cooking range, etc were used. In the winter indoor NO_2 concentrations and personal exposures of mother and child were much higher than in summer. in winter 35 percent of mother and 20 percent of children were exceeded than Japanese Ambient Air Quality Standard, but in summer none of them were exceeded. The elevated levels in winter can be related to the use of NO_2 producing heating appliances especially the non-vented stove. The time gasrange is being used slightly effected the indoor NO@>D22@>D2 concentration, but this result was not significant statistically. The house structure, i.e. the construction of the house and the number of rooms influence the indoor NO_2 concentrations were highly intercorrelated and also highly correlated with the personal exposure of mother and child. Multiple regression model based on either measured or time-weighted NO_2 concentrations explained about 85 percent of the variance in the personal exposures of child and mother in winter, but in the case of summer were low rate. The exposures calculated from the time-weighted NO_2 concentrations correlated very well with the measured personal exposure level. This was not the case in the summer.
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