Air pollution characteristics and health effect in northern highway toll stations: A case study on Dalian City

Taking two toll stations in Dalian as research objects, monitors and tests the concentration of the CO, PM10, NO2 and THC inside and outside the stations. The results show that the concentration of most of air pollutants exceeds the standard values of China. Studies the air pollution characteristics and influencing factors inside and outside the toll stations by the methods of bivariate correlation analysis and partial correlation analysis, and the influencing factors include the traffic flow, geographic location, external pollution sources and the diffusivity of those pollution sources, etc. Surveys the workers in the toll stations and the citizens on their physical health, explores the influence of air pollution on the workers, and puts forward some suggestions for improvement.