00572naa#a2200193#i#450# EN\\bibl\114160 20260209150008.1 3034-4689 20260131b2026####ek#y0engy0150####ca RU SORPTION OF LEAD (II) IONS BY DIOCTAHEDRAL SMECTITE FROM AQUEOUS SOLUTIONS Journal article Kazan Kazan National Research Technological University 2026 4 с. Journal article local Smirnov A. K. Yandimirov M. A. Smirnova L. G. vestniktu.ru