香港与广州市汽车尾气污染比较

采用较先进自动分析仪器，连续４年在香港九龙青山道及连续９天广州市解放中路，对汽车尾气污染进行监测。结果表明，香港九龙青山道汽车尾气污染较轻，１９８８年和１９８９年基本满足中国国家大气环境质量二级标准的要求。广州市解放中路汽车尾气污染严重。超过国家大气环境质量三级标准，车流组成与行车速度的差异是造成香港与广州市两地汽车气污染差别的主要原因。

Comparison in Vehicular Exhaust Emissions between Hong Kong and Guangzhou Cities

The monitoring results of vehicular exhaust emissions in the urban areas of Hong Kong and Guangzhou were discussed.The monitoring exercise was carried out by using automatic gaseous analyser mounted on road side in Hong Kong for four years and for nine days in Guangzhou.The results show that the pollution level at Castle Peak Road of Hong Kong was comparitively lower than that in Guangzhou. The pollution level in Hong Kong satisfied the national air quality standard (Class 2)of China in both years 1988 and 1989.The pollutant concentration along Jefang Middle Road was very high and exceeded the national air quality standard (Class 3). The traffic flow speed and composition were discovered to be the major reasons for the difference in pollutant concentrations in both cities.