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BS ISO 5724:2023

BS ISO 5724:2023

$102.76

Jewellery and precious metals. Determination of very high purity gold. Difference method using ICP-MS

Published By Publication Date Number of Pages
BSI 2023 16
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PDF Catalog

PDF Pages PDF Title
2 National foreword
6 Foreword
7 1 Scope
2 Normative references
3 Terms and definitions
4 Principle
5 Reagents
8 5.10 Monoelemental standard stock solutions (1 mg/ml).
5.11 Gold standard stock solution (20 g/l).
5.12 Stock solutions and standard solutions.
5.12.1 Concentrated stock solution (10 µg/ml).
5.12.2 Stock solution (0,1 µg/ml).
5.12.3 Concentrated internal standard solution (10 µg/ml).
9 5.12.4 Internal standard solution (0,1 µg/ml).
6 Apparatus
6.1 Customary laboratory apparatus
7 Sampling
8 Procedure
8.1 General
8.2 Sample preparation
8.3 Sample solution
8.4 Blank solution
10 8.5 Calibration solutions
8.5.1 Blank calibration solutions
8.5.2 Sample calibration solutions
8.6 Measurement
9 Calculation and expression of the results
9.1 Calibration curves
11 9.2 Calculation
9.3 Repeatability
10 Test report
12 Annex A (informative) Procedures for preparation of monoelemental standard stock solutions
15 Annex B (informative) Measurement parameters

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BS ISO 5724:2023
$102.76