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2 128 331

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Application

97105481/04, 1997-04-09

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Actual filing date

1997-04-09

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Published

1999-03-27

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Inventor

Smol'Skij G.M.Chubirko M.I.Makarov N.V.

(73)

Holder

Voronezhskaja Gosudarstvennaja Tekhnologicheskaja AkademijaTsentr Gosudarstvennogo Sanitarno-Ehpidemiologicheskogo Nadzora Voronezhskoj Oblasti

METHOD OF SEPARATELY DETERMINING ANILINE AND PHENOL IN AQUEOUS SOLUTIONS Russian patent published in 1999 - IPC

Abstract RU 2128331 C1

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

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RU 2 128 331 C1

Authors

Smol'Skij G.M.

Chubirko M.I.

Makarov N.V.

Dates

1999-03-27—Published

1997-04-09—Filed

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