Properties, processes and modes characterizing the state of heavy metals in soils Andrey Sorokin, Sergey Belopukhov, Vladimir Gukalov, Vitaly Savich, Ravil Baibekov and Nikolay Tyutrin E3S Web Conf., 285 (2021) 06007 Published online: 06 July 2021 DOI: 10.1051/e3sconf/202128506007