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RU

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2 098 811

(13)

C1

(51)

IPC

(21) (22)

Application

95122374/04, 1995-12-28

(22)

Actual filing date

1995-12-28

(45)

Published

1997-12-10

(72)

Inventor

Lisenkova L.L.

(73)

Holder

Vserossijskij Nauchno-Issledovatel'Skij Institut Molochnoj PromyshlennostiLisenkova Ljudmila Leonidovna

ACCELERATED METHOD FOR DETERMINING CHEMICAL OXYGEN MINIMUM WITH AQUEOUS SOLUTIONS CONTAINING ORGANIC COMPOUNDS Russian patent published in 1997 - IPC

Abstract RU 2098811 C1

FIELD: industrial health. SUBSTANCE: invention aims at developing recycling water supply and standardization of waste water flow at food industry enterprises. Solution being analyzed is brought in contact with 0.125 N potassium bichromate solution and sulfuric acid at volume ratio (8- 10): (1-1.4):(18-20), mixture obtained is allowed to stand for 3-5 min, cooled to room temperature, ferroin indicator is added, and excess of potassium bichromate is titrated with Moor salt solution. EFFECT: improved analytical procedure. 2 tbl

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RU 2 098 811 C1

Authors

Lisenkova L.L.

Dates

1997-12-10—Published

1995-12-28—Filed

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