BS ISO 11533:2009
Current
The latest, up-to-date edition.
Iron ores. Determination of cobalt. Flame atomic absorption spectrometric method
Hardcopy , PDF
English
07-31-2009
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
7.4 Determination
7.4.1 Decomposition of the test portion
7.4.2 Treatment of residue
7.4.3 Treatment of combined filtrate and washings
7.4.4 Preparation of the set of calibration solutions
7.4.5 Adjustment of atomic absorption spectrometer
7.4.6 Atomic absorption measurements
8 Expression of results
8.1 Calculation of mass fraction of cobalt
8.2 General treatment of results
8.2.1 Repeatability and permissible tolerances
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
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