中山市路边交通点环境空气质量污染特征研究

Study on Environmental Air Pollution Characteristics of Traffic Stations in Zhongshan

通过中山市路边交通点的长期在线监测,对路边交通主干道环境空气质量进行了统计与分析,并与中山市其他环境空气监测点进行对比分析。分析结果表明:路边交通点环境空气常规污染浓度明显高于同期长江旅游区和全市城区环境空气污染平均浓度,机动车尾气排放是造成路边交通点周边区域空气污染的主要原因。路边交通点机动车排放出黑碳气溶胶与上下班高峰的交通排放有密切关系,呈现双峰型日分布,排放的有机污染物种类多达71种,有机污染物主要以甲烷为主,而且排放量比较稳定,不会随季节变化而发生较大变化。

The author conducted statistical analysis based on air quality data, which generated from long-term monitoring ibr traffic road side stations as well as ambient air quality monitoring stations in Zhongshan. The results showed that the ambient air concentration of roadside traffic spots was significantly higher than that of the Yangtze River tourism area and the urban area in the same period. Vehicle exhaust emission was the main cause of air pollution in the surrounding area of roadside traffic points. The road traffic point out there is a close relationship between the motor vehicle emissions of black carbon aerosol with the rush of traffic emissions, bimodal distribution, types of organic pollutant emissions up to 71 kinds of organic pollutants, mainly methane emissions, and relatively stable, will not have great changes with the seasons.