Determination of boron (III) oxide in refractory products. Part 1: Determination of total boron (III) oxide in oxidic materials for ceramics, glass and glazes (ISO 21078-1:2008)
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ISO 21078-1:2008 specifies methods of determining boron(III) oxide in refractory products and raw materials, in mass fractions of 0,01 % or greater. It is applicable to the determination of total boron(111) oxide in oxidic materials for ceramics, glass and glazes.
Tämän julkaisun valmistelusta Suomessa vastaa Rakennustuoteteollisuus RTT ry, puh. 09 12 991 (vaihde).
Sisällysluettelo
Foreword
1 Scope
2 Normative references
3 Terms and definitions
4 Preparation of the test sample
4.1 Refractory brick or its raw material
4.2 Unshaped refractories
4.3 Dry unshaped refractories
4.4 Wet unshaped refractories
4.5 Laboratory sample
4.6 Weighing of test portion
5 Number of determinations
6 Determination of boron(III) oxide by alkaline titrimetry
6.1 Principle
6.2 Reagents
6.3 Apparatus
6.4 Mass of test portion
6.5 Procedure
6.6 Blank test
6.7 Calculation
6.8 Interferences
7 Determination of boron(III) oxide by azomethine H absorption spectrophotometry
7.1 Principle
7.2 Reagents
7.3 Apparatus
7.4 Mass of test portion
7.5 Procedure
7.6 Blank test
7.7 Plotting the calibration graph
7.8 Calculation
7.9 Interferences
8 Determination of boron(III) oxide by curcumin absorption spectrophotometry
8.1 Principle
8.2 Reagents
8.3 Apparatus
8.4 Mass of test portion
8.5 Procedure
8.6 Blank test
8.7 Plotting the calibration graph
8.8 Calculation
9 Determination of boron(III) oxide by inductively coupled plasma atomic emission spectrometry (ICP-AES)
9.1 Principle
9.2 Reagents
9.3 Apparatus
9.4 Mass of test portion
9.5 Procedure
9.6 Blank test
9.7 Calculation
9.8 Interferences
10 Expression of test results
10.1 General
10.2 Examination and adoption of test results
11 Test report
Annex A Interlaboratory test results (informative)
ISO 31-0:1992 Quantities and units -- Part 0: General principles
ISO 3310-1:2000 Test sieves -- Technical requirements and testing -- Part 1: Test sieves of metal wire cloth
ISO 3696:1987 Water for analytical laboratory use -- Specification and test methods
ISO 31-0:1992 Quantities and units -- Part 0: General principles
ISO 3310-1:2000 Test sieves -- Technical requirements and testing -- Part 1: Test sieves of metal wire cloth
ISO 3696:1987 Water for analytical laboratory use -- Specification and test methods
ISO 6353-2:1983 Reagents for chemical analysis -- Part 2: Specifications -- First series
ISO 6353-3:1987 Reagents for chemical analysis -- Part 3: Specifications -- Second series
ISO 836:2001 Terminology for refractories