00772naa#a2200193#i#450# EN\\bibl\122442 20260818071121.2 2686-9896 20260515b2026####ek#y0engy0150####ca RU ACCOUNTING FOR THE HARD-SOFT PROPERTIES OF CHALCOGEN ATOMS IN THE DEVELOPMENT OF NEW EXTRACTANTS AND SORBENTS FOR HEAVY METAL COMPOUNDS Journal article Angarsk Federal State Funded Educational Establishment of Higher Education «Angarsk State Technical University» 2026 1 с. Journal article local Органическая химия. 547 Nalibaeva Araylym Muratovna Abdikalykov Erlan Nurzhanuly Ilyassova Oral Serikovna angtu.editorum.ru