Identically adopts ISO 19976 1:2019, which specifies a flame atomic absorption spectrometric method for the determination of the mass fraction of cadmium in copper, lead and zinc sulfide concentrates.
Table of contents
Header
About this publication
Preface
Foreword
1 Scope
2 Normative reference
3 Terms and definitions
4 Principle
5 Reagents
5.1
5.2
5.3
5.4
5.5
5.6
5.7
5.8
5.9
5.10
5.11
6 Apparatus
6.1
6.2
6.3
6.4
6.5
7 Samples
7.1 Laboratory sample
7.2 Test sample
7.3 Test portion
8 Procedure
8.1 Number of determinations
8.2 Blank test
8.3 Determination
8.3.1 Dissolution of test portion
8.3.2 Preparation of test solutions
8.3.3 Adjustment of the AAS
8.3.4 Atomic absorption measurements
8.4 Check test
9 Expression of results
10 Precision and accuracy
10.1 Expression of precision
10.2 Method for obtaining the final result
10.3 Between-laboratories precision
10.4 Check of trueness
10.4.1 General
10.4.2 Type of CRM or reference material
10.4.2.1 General
10.4.2.2 Reference material certified/characterized by inter-laboratory test programme
10.4.2.3 Reference material certified/characterized by one laboratory
11 Test report
Annex A
A.1 Scope
A.2 Principle
A.3 Chemicals
A.3.1
A.4 Apparatus
A.4.1
A.4.2
A.4.3
A.5 Procedure
A.5.1 Preparation of the weighing vessel
A.5.2 Test portion
A.5.3 Determination of the test portion dry mass
A.6 Calculation of the dry mass of the test portion
