GOST R 52144-2003
ГОСТ Р 52144-2003
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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
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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