福州市快速路交通颗粒物变化特征

Characteristics of Particulate Emission from Expressway Traffic in Fuzhou City

基于2017年连续数天对福州市三环快速路测试路段交通的颗粒物浓度进行监测,同步记录的气象、交通特征数据,对颗粒物污染特征进行探究并分析得到,风速、温度、湿度与PM_(2.5)、PM_(10)浓度均呈显著的负相关性。研究结果显示:该路段"周末效应"并不明显,总的交通量与PM_(2.5)、PM_(10)浓度均有明显正相关性;在调查的6种车型中,小型客车、大型货车对颗粒物浓度影响最为明显,其中,小型客车对PM_(2.5)、PM_(10)有较明显正相关影响,而大型货车和PM_(2.5)呈明显的正相关性的同时与PM_(10)相关性较弱。

Based on continuous several days′monitoring of particle concentration in Fuzhou third ring road expressway in2017,and simultaneous recording of the weather and the data of traffic characteristics,to analyze the characteristics of particulate emission,it was obtained that the temperature,humidity,wind speed with PM2.5,PM10concentration had a significant negative correlation.The results showed that the″weekend effect″was not obvious in this section of the road,the total amount of traffic and PM2.5,PM10concentrations were significantly positively correlated.In the investigation of six vehicle types,small cars and large trucks had the most obvious influence on the concentration of particulate emission,small cars had a significantly positive correlation with PM2.5and PM10,while the large trucks showed a significant positive correlation with PM2.5,and a weak correlation with PM10.