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GB/T 21198.2-2007: Determination of precious metals in precious metals jewellery alloys -- Method using ICP spectrometry -- Part 2: Platinum jewellery alloys -- Determination of platinum -- Method using the intensity ratios of all minor constituents with reference to platin
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Determination of precious metals in precious metals jewellery alloys -- Method using ICP spectrometry -- Part 2: Platinum jewellery alloys -- Determination of platinum -- Method using the intensity ratios of all minor constituents with reference to platin
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GB/T 21198.2-2007
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Basic data | Standard ID | GB/T 21198.2-2007 (GB/T21198.2-2007) | | Description (Translated English) | Determination of precious metals in precious metals jewellery alloys -- Method using ICP spectrometry -- Part 2: Platinum jewellery alloys -- Determination of platinum -- Method using the intensity ratios of all minor constituents with reference to platin | | Sector / Industry | National Standard (Recommended) | | Classification of Chinese Standard | Y88 | | Classification of International Standard | 39.060 | | Word Count Estimation | 15,187 | | Date of Issue | 2007-11-12 | | Date of Implementation | 2008-07-01 | | Quoted Standard | GB 11887 | | Adopted Standard | ISO/DIS 14138-2-2001, NEQ | | Regulation (derived from) | China National Standard Approval Announcement2007 No.12 (Total No.112) | | Issuing agency(ies) | General Administration of Quality Supervision, Inspection and Quarantine of the People's Republic of China, Standardization Administration of the People's Republic of China | | Summary | This standard specifies the application of ICP spectrometer using all the intensity ratio of trace elements and platinum jewelery alloys-Determination of total platinum impurities in prime method to determine the platinum content. This section applies to the purity of platinum jewelery range prescribed GB 11887. | GB/T 21198.2-2007: Determination of precious metals in precious metals jewellery alloys -- Method using ICP spectrometry -- Part 2: Platinum jewellery alloys -- Determination of platinum -- Method using the intensity ratios of all minor constituents with reference to platin
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Determination of precious metals in precious metals jewellery alloys Method using ICP spectrometry Part 2... Platinum jewellery alloys Determination of platinum Method using the intensity ratios of all minor constituents with reference to platinum
ICS 39.060
Y88
National Standards of People's Republic of China
Determination of precious metal jewelery alloys precious metal content
ICP Spectrometry
Part 2. Determination of platinum content of platinum jewelery alloys
Using all trace elements and platinum intensity ratio analysis
Posted 2007-11-12 2008-07-01 implementation
Administration of Quality Supervision, Inspection and Quarantine of People's Republic of China
Standardization Administration of China released
Foreword
GB/T 21198 "precious metal jewelery alloys precious metal content using ICP spectrometry" is divided into six parts.
--- Part 1. Determination of platinum content platinum jewelery alloys using yttrium as internal standard;
--- Part 2. Determination of platinum content platinum alloy jewelry using platinum all trace elements and the intensity ratio method;
--- Part 3. Determination of palladium jewelery alloys using palladium content of yttrium as internal standard;
--- Part 4. Determination of 999 ‰ precious metal jewelery alloys precious metal content of subtraction;
Part --- Article 5. 999 ‰ silver jewelery alloys - Determination of silver content difference of subtraction;
--- Part 6. Subtraction.
This section GB/T 21198 Part 2.
The section referring to ISO /DIS14138-2.2001 "platinum alloy jewelry platinum content using ICP spectrometry (using all trace elements
Su platinum intensity ratio method), "written in the following main technical differences and ISO /DIS14138-2.
--- The Normative references cited in the international standards to China's national standard GB 11887;
--- According to our standard requirements for the preparation of reagents specifications made provisions;
--- Due to the current international and domestic no standard for sample preparation, thus deleting the original text of Chapter 7 and Chapter 10 b).
For ease of use, this section also made the following editorial changes.
--- "This International Standard" be replaced by "this section";
"." --- With a decimal point instead of a comma as the decimal point, "";
--- With "mL" instead of "cm3";
--- Delete international standards preface and appendix C (comparison test results).
Appendix A of this section is normative appendix, Appendix B is an informative annex.
This part is proposed by the China National Light Industry Council.
This part of the National Standardization Technical Committee jewelry (SAC/TC256) centralized.
This section drafted by. National Jewelry Quality Supervision and Inspection Center.
The main drafters of this section. Liwu Jun, Li Yukun birds, Lisu Qing, Shen Feng.
Determination of precious metal jewelery alloys precious metal content
ICP Spectrometry
Part 2. Determination of platinum content of platinum jewelery alloys
Using all trace elements and platinum intensity ratio analysis
1 Scope
This section GB/T 21198 specifies the application of all the trace elements using ICP spectrometer and the intensity ratio of platinum jewelery alloys - Determination of platinum
The total amount of impurity elements to determine the platinum content approach.
This section applies to the purity of platinum jewelery range specified in GB 11887.
Note 1. The platinum alloy may contain palladium, copper, gold, iridium, ruthenium, rhodium, cobalt, gallium, chromium, indium, nickel, iron, zinc, cadmium, magnesium, tin, aluminum, manganese, titanium, lead and silver. If each of the sample
Element content exceeds the values in Table 1 listed, this does not apply.
Note 2. This method assumes that the sample contains the content of all the metal and non-metallic elements other than the elements listed in Table 1 does not exceed 0.1%. This assumption needs
To be confirmed.
Table 1 maximum concentration of alloying elements and impurities in ‰ represent
Element upper limit elements
Pd 180 Ni 60
Pt 990 Fe 5
Cu 180 Zn 5
Au 60 Cd 5
Ir 60 Mg 5
Ru 60 Sn 5
Rh 60 Al 5
Co 60 Mn 5
Ga 60 Ti 5
Cr 60 Pb 5
In 60 Ag 4
2 Normative references
The following documents contain provisions which, through reference GB/T 21198 in this section constitute provisions of this section. For dated reference documents
Member, all subsequent amendments (not including errata content) or revisions do not apply to this section, however, encouraged to reach under this section
Parties to research agreement to use the latest versions of these documents. For undated reference documents, the latest versions apply to this
section.
GB 11887 jewelry precious metal purity and designation of (GB 11887-2002, ISO 9202.1991, NEQ)
3 PRINCIPLE OF THE METHOD
The sample was dissolved in aqua regia. Simultaneous Determination of ICP spectrometer sample emission intensity of all the elements, with each element in the calculation of platinum
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