TY JOUR TI Accumulation of Heavy Metals in Soils and Phytomass in Urbanized Areas KW Heavy metal KW iron KW zinc KW cadmium KW lead KW highway KW intensity KW traffic flow KW park area KW soil KW phytomass KW plant sample KW ecological state KW urbanized area JO Proceedings of Petersburg Transport University AU Gavrilova, A.A. AU Makarova, E.I. AU Ahtyamov, R.G. PY 2023 IS 20 PB FSBEI HE "Emperor Alexander I St. Petersburg State Transport University"