Temporal and Spatial Distribution and Health Risks of Vehicle Pollution in High-populated Urban Areas

In order to forecast pollution level of SO2,NO2,and CO in high-populated areas,as well as their im-pacts on health,micro-monitor Cairpols are used to measure their concentration level at four monitoring points:a campus entrance,a bus stop,an intersection,and a restaurant,which are close to the Wuhan University of Technology.These data were collected within two weeks at morning peak,off peak,and evening peak hours.The spatial and temporal distri-butions of concentration of SO2,NO2,and CO are analyzed with statistical methods.A model is developed to estimate the health risks of SO2,NO2,and CO on nearby population.The results show that the concentration of CO at four monito-ring points is from 0.27 mg/m3 to 3.54 mg/m3;NO2 is from 3.44 μg/m3 to 210 μg/m3;and SO2 is from 19.63 μg/m3 to 290 μg/m3.The highest concentration of NO2is found at the bus stop,intersection,and restaurant at evening peak hours in weekends,which are all above the national limit and present health risk to nearby people.