Relation between Nitrogen Dioxide Concentration in Scholar Zone of One Junior School along Two Heavily Traffic Road and the Results of Pulmonary Function Test for School Children in Scholar Zone

Abstract

The relationship was surveyed between NO₂ concentration in the scholar zone of Seido junior school along the heavily traffic road (Road Number-43 and Hanshin Highway Road) and the results of pulmonary function test for school children in scholar zone. The pulmonary functions of 6th-grade school children (352 samples) were measured by an autospirometer. The school boys and girls were classified into the following four groups in inhabit area respectively (Road-50m (lst-area)-100 m (2 nd)-300 m (3rd)-(4th), and Yamate-junior school as Refference (5th)) by twice investigated results of relation between NO₂concentration in scholar zone and the distance from R-43, and etc.
(1) Deviation was not found out between the forced-volume capacity (FVC) for investigated school and reference school children.
(2) For school children living in one (lst-4th) area, the estimated value of FVC is shown as a function of the body height, body weight and NO₂ concentration in the area where the child is lived in for more than 3 years, as follow.
X: body height (cm), Y: body weight (kg), U: NO2 concentration (μg/5ml) Boy; FVC (X, Y, U) = (0.0315*X + 0.0229* Y-2.850)*(1.1180-0.0670* U) (1) Girl; FVC (X, Y, U) = (0. 0226*X-1-0.0226 Y-3.078)*(1.0809-0.0443* U) (1)