FIELD: analytical and pharmaceutical chemistry.
SUBSTANCE: method involves applying salicylate copper (II) complex as a reagent followed by extraction of obtained colored compound with chloroform and photometry of extraction. Solutions of copper (II) sulfate and sodium salicylate are added to the preparation solution, mixture is extracted with chloroform and optical density of extract is measured. Invention provides enhancing specificity, selectivity of method in the presence of decomposition products of analyzing substance.
EFFECT: improved method for quantitative assay.
1 dwg, 7 tbl
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