ISO 15093:2020
Jewellery and precious metals — Determination of high purity gold, platinum and palladium — Difference method using ICP-OES
This document specifies the analytical procedure for the determination of gold, platinum and palladium with a nominal content of and above 999 ? (parts per thousand).
This document specifies a method intended to be used as the recommended method for the determination of gold, platinum and palladium of fineness of and above 999 ?. For the determination of fineness of and above 999,9 ?, modifications described in Annex B apply.
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Foreword
1 Scope
2 Normative references
3 Terms and definitions
4 Principle
5 Reagents
6 Apparatus
7 Sampling
8 Procedure
8.1 General
8.2 Sample solution
8.3 Calibration solutions
8.4 Measurement
9 Calculation and expression of the results
9.1 Calibration curves
9.2 Calculation
9.3 Repeatability
10 Test report
Annex A (informative) Wavelengths
Annex B (normative) Determination of fineness of and above 999,9 ‰
Bibliography
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Foreword
1 Scope
2 Normative references
3 Terms and definitions
4 Principle
5 Reagents
6 Apparatus
7 Sampling
8 Procedure
8.1 General
8.2 Sample solution
8.3 Calibration solutions
8.4 Measurement
9 Calculation and expression of the results
9.1 Calibration curves
9.2 Calculation
9.3 Repeatability
10 Test report
Annex A (informative) Wavelengths
Annex B (normative) Determination of fineness of and above 999,9 ‰
Bibliography