BS ISO 11533:2009

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

Describes a flame atomic absorption spectrometric method for the determination of the mass fraction of cobalt in iron ores.

This International Standard specifies a flame atomic absorption spectrometric method for the determination of the mass fraction of cobalt in iron ores.

This method is applicable to a mass-fraction range of 0,0007%to 0,06%of cobalt in natural iron ores, iron ore concentrates and agglomerates, including sinter products.