METHOD OF PRODUCING EFFERVESCENT COMPOSITION FOR EXTRACTION OF DICHLOROPHENOXYCARBOXYLIC ACIDS AND THEIR METABOLITES FROM AQUEOUS SOLUTIONS Russian patent published in 2024 - IPC A61K9/46 B01J20/28 

FIELD: analytical chemistry.

SUBSTANCE: invention relates to extraction of dichlorophenoxycarboxylic acids and their metabolites from aqueous media with effervescent tablets containing activated carbon from rice husk (RH), modified with magnetite with a particle size of 0.5–3 mcm, tartaric acid, bicarbonate and 10- aqueous sodium carbonate. The following is proposed: a method of producing an effervescent composition for the extraction of dichlorophenoxycarboxylic acids and their metabolites from aqueous solutions, characterized by the following: the effervescent composition is obtained by mixing powdered active carbon obtained from rice husks and modified with iron oxide in the form of Fe₃O₄ with tartaric acid, carbonate and bicarbonate sodium, then the resulting composition is pressed to obtain an effervescent composition at a certain ratio.

EFFECT: implementation of the proposed method makes it possible to simplify the process and increase the degree of extraction of dichlorophenoxycarboxylic acids and their metabolites from aqueous solutions.

1 cl, 5 ex, 2 tbl