武汉城区NOx污染特征及其变化趋势  

POLLUTION CHARACTERISTICS OF NOx AND ITS TRENDS IN WUHAN

作　　者：杨建伟 张乃弟 张兆钧[3] 

机构地区：[1]武汉市环保所 [2]武汉市环保技术开发中心 [3]武汉市环境监测中心站

出　　处：《城市环境与城市生态》1991年第4期34-38,共5页Urban Environment & Urban Ecology

摘　　要：武汉城区大气中NOx的污染,一日中以早晨最重,下午最轻;一年中,冬季的浓度比夏季高出37.7%.交通稠密区和商业集中区大气中的NOx年日均浓度分别比郊区高5倍和4.3倍.统计研究的结果表明,九年间特别是近六年来,武汉城区大气中NOx年日均值呈上升趋势.从1984年～1989年,大气中的NOx日均浓度平均每年以7%的速度递增,其超标率平均每年以0.8%的速度递增.The samples of NOx in Wuhan showed that concentration of NOx was higher in the morning than that in the afternoon.The concentration of NOx in winter had increased by 37.7%,as compared with that in summer a year.At dense communicated and business sections,NOx concentration was 5 times and 4 times as more as the suburbs respectively.The result also showed NOx concentration had increased at the average rate of 7% every year and its value of superstandard had increased at the average rate of 0.08% a year from 1984 to 1989.

关 键 词：空气污染 大气环境 氮氧化物 武汉 

分 类 号：X511.02[环境科学与工程—环境工程]