Characterization of roadside air pollutants: An artery road of Lanzhou city in northwest ChinaYonglin Zhang, Daoyuan Yang, Rui Wu, Yue Li, Xiaowen Yang, Renjie Wang and Honglei XuE3S Web Conf., 360 (2022) 01039DOI: https://doi.org/10.1051/e3sconf/202236001039