Journal of Atmospheric and Environmental Optics ›› 2022, Vol. 17 ›› Issue (3): 336-346.

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Research on characteristics of road dust of Weinan City based on light scattering fast detection

MA Tong1, BA Limeng2, SUN Luping3, LIU Jiayuan4, WANG Jie1;5, CHENG Xiaoxia6, ZHENG Yifei7, GAO Jian1∗   

  1. 1 Institute of Atmospheric Environment, Chinese Research Academy of Environmental Sciences, Beijing 100012, China; 2 School of Environmental Science and Engineering, Chang′an University, Xi′an 710054, China; 3 Environmental Monitoring Station of Linwei District, Weinan 714000, China; 4 Centre for Urban Transport Emission Research, College of Environmental Science and Engineering, Nankai University, Tianjin 300071, China; 5 Department of Environmental Science and Engineering, Beijing University of Chemical Technology, Beijing 100029, China; 6 Weinan Environmental Science Research Center, Weinan 714000, China; 7 Hongqing Environmental Technology Co., Ltd. Guangzhou Subsidiary, Guangzhou 510310, China
  • Received:2020-10-29 Revised:2022-04-10 Online:2022-05-28 Published:2022-05-28

Abstract: In order to understand the distribution characteristics and influencing factors of road dust in Weinan City, China, and obtain the localization parameter of road dust and the basis for road dust control, the vehicle-mounted rapid monitoring system was used to measure the road dust load in Weinan based on light scattering method. The characteristics of dust load on different types of roads were analyzed, and the factors affecting the road dust load were explored based on the factors such as traffic flow, vehicle weight and road dust suppression methods. The results show that the average road dust load in Weinan is 1.13 g·m−2, and the dust load of different types of roads is characterized by branch road (1.79 g·m−2) > secondary trunk road (1.22 g·m−2) > provincial road (1.08 g·m−2) > main trunk road (0.94 g·m−2) > national road (0.71 g·m−2). It is also shown that traffic flow and vehicle speed are negatively correlated with the dust load value, that is, the greater the vehicle flow and speed, the smaller the dust load value. In addition, sprinkling water can effectively reduce the value of road dust load, but the retention time is short. Therefore, it is suggested that the operation mode of heavy watering and weak cleaning should be changed, with the focus on dust cleaning and removal.

Key words: fast detection, silt loading, traffic flow, speed, dust suppression method

CLC Number: