Dust concentration in the urban environment air depending on traffic intensity and time of year (on the example of the Volgograd city)D.R. Dobrinskiy, D.A. Nikolenko, A.N. Vasil’ev, E.V. Gorshkov and V.N. AzarovE3S Web Conf., 138 (2019) 01030DOI: https://doi.org/10.1051/e3sconf/201913801030