Combined effect of Fe2+ ions and the meta-isomer of dihydric phenol on duckweed Elena Stolpovskaya, Viktoriya Sukhovnina, Evgeniya Aksamentova, Aleksandr Kupchinsky and Devard Stom E3S Web Conf., 411 (2023) 02062 Published online: 10 August 2023 DOI: 10.1051/e3sconf/202341102062