METHOD OF DETERMINATION OF CHROMIUM IN ALLOYS Russian patent published in 1997 - IPC

Abstract RU 2086962 C1

FIELD: analytical chemistry. SUBSTANCE: the offered method consists in that organic reagent for photometric determination of chromium us used in form of newly synthesized reagent 2,7-bis-azoderivatives of chromotropic acid. Determination is carried out in subacid medium with pH 3-6 and light absorption of λ=750 nm. EFFECT: higher efficiency. 3 tbl

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RU 2 086 962 C1

Authors

Tataeva S.D.

Abakarova D.A.

Dates

1997-08-10—Published

1995-06-28—Filed