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GOST R 52144-2003

ГОСТ Р 52144-2003

Zinc concentrates. Spectrophotometric method of silicon dioxide content determination

Концентраты цинковые. Спектрофотометрический метод определения диоксида кремния

Status: Effective - Introduced for the first time

This standard establishes a spectrometric method for the determination of the nitrate content in milk and dairy products after the Griss reaction with the preceding enzymatic reduction. The method is applied to whole, partially skimmed, skimmed and powdered milk, hard, semi-hard and soft cheeses, processed and whey cheese, caseins, caseinates, whey and milk protein concentrates. This method can be used with a nitrate content of more than 0.2 mg.

Настоящий стандарт устанавливает спектрофотометрический метод определения диоксида кремния в цинковых концентратах всех марок при массовой доле его от 2% до 10%. Метод основан на образовании кремнемолибденовой гетерополикислоты, восстановленной трехвалентным титаном, и измерении оптической плотности раствора полученного соединения на спектрофотометре при длине волны в диапазоне 635-640 нм

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Format: Electronic (pdf/doc)

Approved: Gosstandart of Russia, 11/25/2003

SKU: RUSS69011

Price: $151.00



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The Product is Contained in the Following Classifiers:

PromExpert » SECTION I. TECHNICAL REGULATION » V Testing and control » 4 Testing and control of products » 4.1 Testing and control of products of mining and non-metallic industry » 4.1.1 Ore minerals and concentrates »

ISO classifier » 73 MINING AND MINERAL PRODUCTS » 73.060 Ore minerals and their concentrates »

National standards » 73 MINING AND MINERAL PRODUCTS » 73.060 Ore minerals and their concentrates »

ISO classifier » 73 MINING AND MINERAL PRODUCTS » 73.060 Ore minerals and their concentrates » 73.060.01 Ore minerals in general »

National standards » 73 MINING AND MINERAL PRODUCTS » 73.060 Ore minerals and their concentrates » 73.060.01 Ore minerals in general »

National Standards for KGS (State Standards Classification) » Latest edition » A. Mining. Minerals » A3 Metallic minerals (ores) » A39 Test methods. Packaging. Marking »

National Standards for OKSTU » RAW MATERIALS OF NON-FERROUS METALS, NON-FERROUS METALS AND THEIR ALLOYS » Control methods (testing, analysis, measurements) »


The Document References:

GOST 12.1.005-88: General sanitary requirements for working zone air

GOST 12.1.016-79: Work area air

GOST 1770-74: Laboratory volumetric glassware. Cylinders, beakers, measuring flasks, test tubes. General specifications

GOST 2082.0-81: Molybdenum concentrates. Methods of chemical analysis. General requirements

GOST 24104-2001: Laboratory scales. General technical requirements

GOST 25363-82: Zinc concentrates. Atomic-absorption methods for the determination of gold and silver contents

GOST 26100-84: Copper concentrates. Determination of lead, zinc, cadmium. Flame atomic absorption method

GOST 27329-87: Ores and concentrates of non-ferrous metals. General requirements for methods of chemical analysis

GOST 29227-91: Laboratory glassware. Graduated pipettes. Part 1. General requirements

GOST 29228-91: Laboratory glassware. Graduated pipettes. Part 2. Pipettes for which no waiting time is specified

GOST 29229-91: Laboratory glassware. Graduated pipettes. Part 3. Pipettes for which a waiting time of 15 s is specified

GOST 29230-91: Laboratory glassware. Graduated pipettes. Part 4. Blow-out pipettes

GOST 29251-91: Laboratory glassware. Burettes. Part 1. General requirements

GOST 29252-91: Laboratory glassware. Burettes. Part 2. Burettes for which no waiting time is specified

GOST 29253-91: Laboratory glassware. Burettes. Part 3. Burettes for which a waiting time of 30 s is specified

GOST 3765-78: Reagents. Ammonium molibdate. Specifications

GOST 4204-77: Reagents. Sulphuric acid. Specifications

GOST 4328-77: Reagents. Sodium hydroxide. Specifications

GOST 6709-72: Distilled water. Specifications

GOST 7851-74: Laboratory and chemist glassware. Necks. Internal diameters

GOST 9428-73: Reagents. Silicon dioxide. Specifications

The Document is Referenced By:

GOST R 54922-2012: Zink concentrates. Technical specification

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