ISO 6101-5:2018 ゴム—原子吸光分析による金属含有量の測定—パート5：鉄含有量の測定 | ページ 2

Foreword

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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 45, Rubber and rubber products, Subcommittee SC 2, Testing and analysis.

This third edition cancels and replaces the second edition (ISO 6101-5:2006), which has been technically revised as follows:

• nitric acid has been added as a digestion acid;
• the concentration for sulphuric acid has been specified;
• the procedure for the destruction of organic matter has been further detailed;
• the volume for final solution following dissolution using hydrochloric acid (8.2.2) has been changed to 50 cm³ to ensure consistency of the formulae used throughout the ISO 6101 series;
• Formulae 1 and 2 in Clause 9 have been corrected for the iron content expressed as percentage by mass and milligram per kilogram, respectively;
• Annex A and Annex B have been added to include method of standard addition and precision statement of the method.

A list of all parts in the ISO 6101 series can be found on the ISO website.

1 Scope

This document specifies an atomic absorption spectrometric method for the determination of the iron content of rubbers.

The method is applicable to raw rubber, rubber products and latex having iron contents of 5 mg/kg to 1 000 mg/kg. Higher concentrations can be determined, provided that suitable adjustments are made to the mass of the test portion and/or the concentrations of the solution used.

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