Ito H, Baba S, Mitani K
Department of Otolaryngology, Nagoya City University Medical School, Japan.
Acta Otolaryngol Suppl. 1996;525:79-84.
In this study, substances of air pollution (NO3-, SO4(2-)) which were collected from the surface of the Japanese cedar flowering parts and pollens in one mountainous and two urban areas were measured by ion chromatography monthly from November '87 to March of '88 and '90 to '91. A questionnaire study of nasal symptoms and school physical examinations were performed on about 400 junior high schools students in two districts (urban area and mountainous area) in March '87 and '91. The results of this research are as follows: i) The quantity of NO4 collected from the pollen of Japanese cedars in the urban and municipal park areas was 2.0 and 3.0 times greater, respectively, than in the mountainous area. The respective concentrations of SO2- were 5 and 2 times higher than the concentration in the mountainous area. ii) The results of a questionnaire of nasal symptoms and of the physical examinations at two junior high schools in the different districts showed a lower incidence of pollinosis in the mountainous area than in the urban area. Comparatively, the percentage of pollinosis in the mountainous area rose from 17.0% in 1987 to 25.0% in 1991, corresponding to a similar rise in the number of diesel vehicles running in the area.
在本研究中，于1987年11月至1988年3月以及1990年至1991年期间，每月通过离子色谱法对从日本雪松开花部位表面以及一个山区和两个市区的花粉中采集的空气污染物质（硝酸根离子、硫酸根离子）进行测量。在1987年3月和1991年3月，对两个地区（市区和山区）约400名初中生进行了鼻部症状问卷调查和学校体检。本研究结果如下：i）从市区和市政公园区域的日本雪松花粉中采集到的硝酸根离子量分别比山区高2.0倍和3.0倍。硫酸根离子的各自浓度比山区的浓度分别高5倍和2倍。ii）对不同地区两所初中的鼻部症状问卷调查和体检结果显示，山区花粉症的发病率低于市区。相比之下，山区花粉症的百分比从1987年的17.0%上升到1991年的25.0%，与该地区柴油车数量的类似增长相对应。
