| 摘要 |
FIELD: chemistry.SUBSTANCE: chemosensor film-type composite material for determining copper (II) cations is a film obtained by depositing a composition containing PVC, a crown-containing styryl dye 2-{2-[4-(1,4-dioxa-7,13-dithia-10-azacyclopentadecan-10-yl)phenyl]vinyl}-9-methyl-1,10-phenanthroline, solvent - tetrahydrofuran or acetonitrile, plasticiser - dioctyl ester sebacic acid and sodium tetraphenylborate, on an inert optically transparent substrate, followed by removal of the solvent and treatment of the obtained film with an aqueous solution of sodium acetate and acetic acid with pH=6.8 for 2-5 minutes. The invention enables to quantitatively determine copper (II) cations at the maximum allowable concentration level in aqueous media, as well as in the presence of tenfold excess of cations of other metals (K, Na, Ca, Mg).EFFECT: high accuracy of determination.2 cl, 1 dwg, 3 ex |
