PHENYLHYDRAZINE DETECTION PROCESS Russian patent published in 1994 - IPC

Abstract RU 2018809 C1

FIELD: analytic chemistry. SUBSTANCE: organic water-miscible solvent is introduced in sample being analyzed in quantity sufficient for dissolving end reaction product, then excess aldehyde and tetrachloro-5.7-dinitrobenzofurazan is added in succession. Solution is seasoned to obtain permanent color and scanned photometrically in absorption band area with maximum at 510 nm. EFFECT: facilitated procedure.

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RU 2 018 809 C1

Authors

Evgen'Ev M.I.

Levinson F.S.

Evgen'Eva I.I.

Moskva N.A.

Nikolaeva N.G.

Zheltukhin I.A.

Dates

1994-08-30—Published

1991-05-16—Filed