METHOD OF QUANTITATIVE COLORIMETRIC DETECTION OF DINITRYL OF ORTOCHLORINEBENZYL IDENMAHLON ACID IN EXTRACTS Russian patent published in 1997 - IPC

Abstract RU 2096765 C1

FIELD: analytical chemistry. SUBSTANCE: analyzed bocarbonate in the course of 5.0 min at temperature 33 K using 0.40-% solution of chloride-dinitrobenzole, 1.5-% aqueous solution of sodium bicarbonate with volumetric relation of sample and reagents 1:1:2 and measuring optical density of formed color with the aid of spectrophotometer. EFFECT: improved authenticity of method. 1 cl, 1 tbl

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RU 2 096 765 C1

Authors

Druzhinin A.A.

Grachev S.A.

Ovchinnikova G.D.

Pashinin V.A.

Dates

1997-11-20—Published

1994-09-19—Filed