乌鲁木齐市汽车尾气污染状况调查

对乌鲁木齐市主要街道受汽车尾气污染的调查和综合分析得到CO、NOx、HC的污染规律,主要街道路中心空气中CO、NOx日均值已超出国家大气环境质量二级标准,市区主要街道的人行道空气中NOx含量已超出二级标准,Ⅱ、Ⅲ类道路人行道空气中CO含量已超标;在三类街道中,Ⅰ类街道车流量最大,Ⅱ类次之,Ⅲ类最少,而汽车排放尾气对街道空气污染状况为Ⅲ类最重、Ⅱ类次之、Ⅰ类最轻。

PRESENT CONDITION INVESTIGA TION OF AUTOMOBILE TAIL GAS ON MAIN STREETS IN URUMQI CITY

Based on actual investigation and comprehensive analysis on the polluted degree caused by automobile tail gas on the main streets in Urumqi,the rule of pollution change about Co,NOx,TCH has been proposed in this paper. The daily average concentration of CO and NOx in the atmosphere at the central line on main urban streets has exceeded the secondary level of national atmospheric environment quality standards. According to the width of streets and the form of buildings, the urban streets were dcvidcd into three types. The polluted state caused by automobile tail gas in cach type were described.