Adopts ISO 15247:2015 to specify an acid dissolution and flame atomic absorption spectrometric method for the determination of silver content of zinc sulfide concentrates.
Table of contents
Header
About this publication
Preface
1 Scope
2 Normative references
3 Principle
4 Reagents
4.1
4.2
4.3
4.4
4.5
4.6
4.7
4.8
4.8.1
4.8.2
4.9
5 Apparatus
5.1
5.2
5.3
5.4
6 Samples
6.1 Test sample
6.2 Test portion
7 Procedure
7.1 Number of determinations
7.2 Blank test
7.3 Decomposition of test portion
7.4 Determination of silver
8 Expression of results
9 Precision
9.1 Expression of precision
9.2 Method for obtaining the final result (see Annex B)
9.3 Precision between laboratories
9.4 Check of trueness
10 Test reports
Annex A
A.1 General
A.2 Principle
A.3 Reagent
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
