METHOD OF SEPARATELY DETERMINING ANILINE AND PHENOL IN AQUEOUS SOLUTIONS

FIELD: analytical methods. SUBSTANCE: method is applicable in analysis of treated waste waters in aniline-dye industry and other aniline- and phenol-containing waste waters. Method consists in, first, extraction of aniline with methyl acetate from potassium fluoride-saturated aqueous solution at pH...

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Bibliographische Detailangaben
Hauptverfasser:	MAKAROV N.V, SMOL'SKIJ G.M, CHUBIRKO M.I
Format:	Patent
Sprache:	eng
Schlagworte:	INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIRCHEMICAL OR PHYSICAL PROPERTIES MEASURING PHYSICS TESTING
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Beschreibung
Zusammenfassung:	FIELD: analytical methods. SUBSTANCE: method is applicable in analysis of treated waste waters in aniline-dye industry and other aniline- and phenol-containing waste waters. Method consists in, first, extraction of aniline with methyl acetate from potassium fluoride-saturated aqueous solution at pH 11-12 followed by extraction of phenol at pH 2-3, whereupon the two compounds are photometrically determined in reextracts: aniline from its reaction with chloramine T and phenol from its reaction with 4-aminoantipyrin. EFFECT: reduced selectivity and accuracy of determination. 3 tbl