Research of Epidemiological Investigation for Suffered Peoples due to Atmospheric Environmental Changes in Hanshin Province since Hanshin-Awaji Earthquake Disaster

对阪神大地震后半年（第一次调查）、一年半（第二次调查）、两年半（第三次调查）三次调查当地二氧化氮与健康恶化症状的关系。通过调查得出以下四个方面的结论。在第二次调查中，NO_2浓度不仅沿着从东到西的道路测量。2和-不。43)，但从北到南的比例也与第一次调查相同。2 .虽然大阪湾沿岸地区的二氧化氮浓度在地震前并不高，但在地震后的两年里，由于大量的卡车从被毁的建筑物中运送废物经过海湾道路，以及可燃废物在海湾地区被焚烧成灰烬，因此在地震后的两年内，大阪湾沿岸地区的二氧化氮浓度有所上升。在第一次调查中，抱怨地震后健康状况恶化的人占回答问卷的人的25%。第二次调查的这一比例为20%，第三次调查的这一比例为14%。与第一次调查相同，第二次调查中NO_2浓度与同一地区、同一地区监测NO_2浓度的人群以及地震后健康状况恶化的人群比例的关系更加明确，风险为5%。但在第三次调查中，两者之间的关系并不清楚。这种关系可以推断出，地震前抱怨健康状况恶化的人的比例并没有像地震后抱怨健康状况恶化的人的比例那样下降。

The relations between the local nitrogen dioxides and the rate of the complained symtoms of the worsened health after the Hanshin Earthquake were surveyed three times, after half year (First survey), one half years (Second's), two half years (Third's) since earthquake.The following four respects were turned out through the survey.1. In the second survey, NO_2 concentrations measured along the roads runing not only from east to west (Routes-No.2 and -No.43), but also from north to south were high in the same as first survey2. Although No_2 concentrations around areas along the Osaka bay were not so high before the earthquake, became higher after it, because a large number of trucks carried the wastes from the destroyed buildings passing through the bay road, and the combustible waste were burned to form ashes in the bay areas during two years after the earthquake.3. In the first survey, the rate of the people who complained about health worsening after the earthquake reached 25% of those who replied to the questionnaire. This rate in the second survey was 20%, and the rate in the third survey was 14%.4. The relation between the NO_2 concentration and the rate of people, who lived in the same area, who lived in same area, where the NO_2 concentration was measured, and who also complained about their health worsening after the earthquake, became clear with condition of 5% risk in the second survey in the same as first survey. But the relation in the third survey did not become clear. The relation was deduced that the rate of people who complained about their health worsening before the earthquake did not decrease as same as the rate of people after the earthquake decreased.