Characterization of roadside air pollutants: An artery road of Lanzhou city in northwest China

Due to the lack of air and traffic monitoring data in China, this study employed a remote sensing (RS) system quality sensors investigate pollutant concentrations, profiles meteorological order characterize roadside concentrations identify their influence factors for major road Lanzhou. The results suggested that temporal variations SO 2 , NO PM 2.5 10 CO peaked at 5:00-7:00 while O 3 17:00. pollutants were lower on weekdays than weekends except . declined with height sites increased, peaking 2-meter whereas CO, reached highest 4-meter height. show positive correlations volume heavy-duty trucks (HDTs) light-duty passenger vehicles (LDPVs), respectively. This provided scientific support establishment systems assessment environmental health impact from vehicle emissions.