ISO 13546:2021
Copper concentrates — Determination of mercury content — Cold vapour atomic absorption spectrometric method
This document specifies an acid digestion and vapour generation atomic absorption spectrometric method for the determination of the mercury content in copper sulfide concentrates.
This document is applicable to mass fraction of mercury between 5 µg/g and 65 µg/g in copper sulfide concentrates.
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Foreword
1 Scope
2 Normative references
3 Terms and definitions
4 Principle
5 Reagents
6 Apparatus
7 Sampling and sampling preparation
7.1 Test sample
7.2 Test portion
8 Procedure
8.1 Number of determinations
8.2 Blank test
8.3 Dissolution of the test portion
8.4 Storage of digested solutions
8.5 Preparation of sample solutions
8.6 Preparation of test solutions
8.7 Preparation of calibration solutions
8.8 Preparation of mercury calibration graph
8.9 Determination of mercury content in test solutions
9 Expression of results
10 Procedure for obtaining the final result
11 Precision
11.1 Expression of precision
11.2 Procedure for obtaining the final result
11.3 Precision between laboratories
11.4 Check of trueness
11.4.1 General
11.4.2 Type of certified reference material or reference material
11.4.3 Reference material certified or characterized by an interlaboratory test programme
11.4.4 Reference material certified or characterized by one laboratory
12 Test report
Annex A (normative) Procedure for obtaining the final results
Bibliography
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Foreword
1 Scope
2 Normative references
3 Terms and definitions
4 Principle
5 Reagents
6 Apparatus
7 Sampling and sampling preparation
7.1 Test sample
7.2 Test portion
8 Procedure
8.1 Number of determinations
8.2 Blank test
8.3 Dissolution of the test portion
8.4 Storage of digested solutions
8.5 Preparation of sample solutions
8.6 Preparation of test solutions
8.7 Preparation of calibration solutions
8.8 Preparation of mercury calibration graph
8.9 Determination of mercury content in test solutions
9 Expression of results
10 Procedure for obtaining the final result
11 Precision
11.1 Expression of precision
11.2 Procedure for obtaining the final result
11.3 Precision between laboratories
11.4 Check of trueness
11.4.1 General
11.4.2 Type of certified reference material or reference material
11.4.3 Reference material certified or characterized by an interlaboratory test programme
11.4.4 Reference material certified or characterized by one laboratory
12 Test report
Annex A (normative) Procedure for obtaining the final results
Bibliography