Sorption of the Cu, Gd, V, Mn, and Fe elements by hydrogels with identification of their complexes in the solid phase of the polymer ligand using EPR. sorpchrom [Internet]. 2024 Apr. 16 [cited 2026 Apr. 3];24(1):111-9. Available from: https://journals.vsu.ru/sorpchrom/article/view/12024