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2 038 579

(13)

C1

(51)

IPC

(21) (22)

Application

92003538/25, 1992-11-03

(22)

Actual filing date

1992-11-03

(45)

Published

1995-06-27

(72)

Inventor

Shirinova A.G.Ivanov V.M.

(73)

Holder

Khimicheskij Fakul'Tet Mgu Im.M.V.Lomonosova

REAGENT FOR COLORIMETRIC AND PHOTOMETRIC DETERMINATION OF NITRITES IN AQUEOUS SOLUTIONS Russian patent published in 1995 - IPC

Abstract RU 2038579 C1

FIELD: analytical chemistry. SUBSTANCE: reagent consists of diazo-component p-nitroaniline, azo-component chromotropic acid, potassium chloride and bromide, and acidic component oxalic acid and ethylenediaminetetraacetic acid. Ratio of components in reagent is, wt.-% p-nitroaniline 0.4-2.0; chromotropic acid 0.4-2.0; potassium chloride 1-4; potassium bromide 5-20; oxalic acid 70-80, and ethylenediaminetetraacetic acid 0.4-4.0. Reagent is used for nitrite ions determination in environment. EFFECT: improved method of determination. 1 tbl

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RU 2 038 579 C1

Authors

Shirinova A.G.

Ivanov V.M.

Dates

1995-06-27—Published

1992-11-03—Filed

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