The role of diatomite as a detoxifying agent in soil contamination with copper Alevtina Kulikova, Vitaly Isaichev, Andrey Kozlov and Olga Tsapovskaya E3S Web Conf., 258 (2021) 08023 Published online: 20 May 2021 DOI: 10.1051/e3sconf/202125808023