ISO 15093:2020 ジュエリーと貴金属  —  高純度の金、白金、パラジウムの測定  —  ICP-OESを使用した差分法 | ページ 2

Foreword

ISO (the International Organization for Standardization) is a worldwide federation of national standards bodies (ISO member bodies). The work of preparing International Standards is normally carried out through ISO technical committees. Each member body interested in a subject for which a technical committee has been established has the right to be represented on that committee. International organizations, governmental and non-governmental, in liaison with ISO, also take part in the work. ISO collaborates closely with the International Electrotechnical Commission (IEC) on all matters of electrotechnical standardization.

The procedures used to develop this document and those intended for its further maintenance are described in the ISO/IEC Directives, Part 1. In particular, the different approval criteria needed for the different types of ISO documents should be noted. This document was drafted in accordance with the editorial rules of the ISO/IEC Directives, Part 2 (see www.iso.org/directives ).

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This document was prepared by Technical Committee ISO/TC 174, Jewellery and precious metals.

This third edition cancels and replaces the second edition (ISO 15093:2015), which has been technically revised. The main changes compared to the previous edition are as follows:

• a) change of title of standard;
• b) change of scope for measuring also gold, platinum and palladium with a nominal content above 999 ‰ (parts per thousands);
• c) revision of this document in order to comply in structure with ISO 15096.

1 Scope

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.

2 Normative references

The following documents are referred to in the text in such a way that some or all of their content constitutes requirements of this document. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies.

3 Terms and definitions

No terms and definitions are listed in this document.

ISO and IEC maintain terminological databases for use in standardization at the following addresses:

Bibliography