ISO 10204:2015
Iron ores — Determination of magnesium — Flame atomic absorption spectrometric method
ISO 10204:2015 specifies a flame atomic absorption spectrometric method for the determination of the mass fraction of magnesium in iron ores.
This method is applicable to mass fractions of magnesium between 0,010 % and 2,00 % in natural iron ores, iron ore concentrates, and agglomerates, including sinter products.
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Foreword
1 Scope
2 Normative references
3 Principle
4 Reagents
5 Apparatus
6 Sampling and samples
6.1 Laboratory sample
6.2 Preparation of predried test samples
7 Procedure
7.1 Number of determinations
7.2 Test portion
7.3 Blank test and check test
7.3.1 Blank test
7.3.2 Check test
7.4 Determination
7.4.1 Decomposition of the test portion
7.4.2 Treatment of the residue
7.4.3 Preparation of the test solution
7.4.4 Adjustment of the atomic absorption spectrometer
7.4.5 Atomic absorption measurements
8 Expression of results
8.1 Calculation of mass fraction of magnesium
8.2 General treatment of results
8.2.1 Repeatability and permissible tolerance
8.2.2 Determination of analytical result
8.2.3 Between-laboratories precision
8.2.4 Check for trueness
8.2.5 Calculation of final result
8.3 Oxide factor
9 Test report
Annex A (normative) Flowsheet of the procedure for the acceptance of analytical values for test samples
Annex B (informative) Derivation of repeatability and permissible tolerance equations
Annex C (informative) Precision data obtained by international analytical trials
Bibliography
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Foreword
1 Scope
2 Normative references
3 Principle
4 Reagents
5 Apparatus
6 Sampling and samples
6.1 Laboratory sample
6.2 Preparation of predried test samples
7 Procedure
7.1 Number of determinations
7.2 Test portion
7.3 Blank test and check test
7.3.1 Blank test
7.3.2 Check test
7.4 Determination
7.4.1 Decomposition of the test portion
7.4.2 Treatment of the residue
7.4.3 Preparation of the test solution
7.4.4 Adjustment of the atomic absorption spectrometer
7.4.5 Atomic absorption measurements
8 Expression of results
8.1 Calculation of mass fraction of magnesium
8.2 General treatment of results
8.2.1 Repeatability and permissible tolerance
8.2.2 Determination of analytical result
8.2.3 Between-laboratories precision
8.2.4 Check for trueness
8.2.5 Calculation of final result
8.3 Oxide factor
9 Test report
Annex A (normative) Flowsheet of the procedure for the acceptance of analytical values for test samples
Annex B (informative) Derivation of repeatability and permissible tolerance equations
Annex C (informative) Precision data obtained by international analytical trials
Bibliography