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GB/T 15072.7-2008: Test method of precious metal alloys -- Determination of chromium and iron contents for gold alloys -- Inductively coupled plasma atomic emission spectrometry
Status: Valid GB/T 15072.7: Evolution and historical versions
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| GB/T 15072.7-2008 | English | 189 |
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Test method of precious metal alloys -- Determination of chromium and iron contents for gold alloys -- Inductively coupled plasma atomic emission spectrometry
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GB/T 15072.7-2008
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| GB/T 15072.7-1994 | English | 199 |
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Gold alloys-Determination of chromium content
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GB/T 15072.7-1994
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Basic data | Standard ID | GB/T 15072.7-2008 (GB/T15072.7-2008) | | Description (Translated English) | Test method of precious metal alloys -- Determination of chromium and iron contents for gold alloys -- Inductively coupled plasma atomic emission spectrometry | | Sector / Industry | National Standard (Recommended) | | Classification of Chinese Standard | H68 | | Classification of International Standard | 77.120.99 | | Word Count Estimation | 8,896 | | Date of Issue | 2008-03-31 | | Date of Implementation | 2008-09-01 | | Older Standard (superseded by this standard) | GB/T 15072.18-1994; GB/T 15072.7-1994; GB/T 15072.19-1994 | | Quoted Standard | YS/T 371 | | Regulation (derived from) | National Standard Approval Announcement 2008 No.5 (Total No.118) | | 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 determination of gold alloy of chromium and iron content. This section applies to AuNiCr, determination AuFeCr and AuNiFeZr alloy of chromium and iron content. Measuring range (mass fraction): 0. 5% to 7%. | GB/T 15072.7-2008: Test method of precious metal alloys -- Determination of chromium and iron contents for gold alloys -- Inductively coupled plasma atomic emission spectrometry
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Test method of precious metal alloys. Determination of chromium and iron contents for gold alloys. Inductively coupled plasma atomic emission spectrometry
ICS 77.120.99
H68
National Standards of People's Republic of China
Replacing GB/T 15072.7-1994, GB/T 15072.18-1994, GB/T 15072.19-1994
Precious metal alloys -
Determination of gold alloy of chromium and iron content
Inductively coupled plasma atomic emission spectrometry
Posted 2008-03-31 2008-09-01 implementation
Administration of Quality Supervision, Inspection and Quarantine of People's Republic of China
Standardization Administration of China released
Foreword
This standard is GB/T 15072-1994 "precious metals and their alloys -" (all parts) the integration of amendments into
Part 19.
Determination --- GB/T 15072.1-2008 Methods for chemical analysis of precious metal alloys of gold, platinum, palladium, gold alloy amount of ferrous sulfate
Potentiometric titration;
--- GB/T 15072.2-2008 Methods for chemical analysis of precious metal alloys silver alloys Determination of silver content of sodium chloride potential drop
Titration;
--- GB/T 15072.3-2008 Methods for chemical analysis of precious metal alloys of gold, platinum, palladium, platinum alloys determining the amount of potassium permanganate
Current titration;
--- GB /15072.4-2008 Methods for chemical analysis of precious metal alloys of palladium, silver-palladium alloy determining the amount of T-dimethyl glyoxal
Gravimetric method;
--- GB/T 15072.5-2008 Methods for chemical analysis of precious metal alloys of gold, measuring the potential of potassium iodide palladium alloy of silver content drops
Titration;
--- GB/T 15072.6-2008 precious metal alloys - Determination of platinum, palladium, iridium alloy in determining the amount of ferrous sulfate Current
titration;
--- GB/T 15072.7-2008 precious metal alloys - Gold alloys chromium and iron content - Inductively coupled plasma
Plasma atomic emission spectrometry;
--- GB/T 15072.8-2008 precious metal alloys - gold, palladium, silver and copper alloys - Determination of the amount of precipitation thiourea
EDTA complexometric back titration;
--- GB/T 15072.9-2008 precious metal alloys - Gold alloys - Determination of the amount of indium by EDTA back drop
Titration;
--- GB/T 15072.10-2008 precious metal alloys - Gold alloys - Determination of nickel by EDTA back drop
Titration;
--- GB/T 15072.11-2008 precious metal alloys - gold alloy of gadolinium and beryllium content - Inductively coupled plasma
Plasma atomic emission spectrometry;
--- GB T 15072.12-2008 precious metal alloys - Silver alloys - Determination of vanadium content/hydrogen peroxide spectrophotometer
Law degree;
--- GB/T 15072.13-2008 precious metal alloys - Tin in silver, cerium and lanthanum content - Inductively coupled
Plasma atomic emission spectrometry;
--- GB/T 15072.14-2008 precious metal alloys - silver alloy of aluminum and nickel content - Inductively coupled plasma
Plasma atomic emission spectrometry;
--- GB T 15072.15-2008 precious metal alloys - gold, silver, palladium alloy of nickel, zinc and manganese contents /
Inductively coupled plasma atomic emission spectrometry;
--- GB/T 15072.16-2008 precious metal alloys - gold alloy of copper and manganese content - Inductively coupled plasma
Plasma atomic emission spectrometry;
--- GB/T 15072.17-2008 precious metal alloys - Determination of tungsten content of a platinum alloy of tungsten trioxide weight
Method;
--- GB/T 15072.18-2008 precious metal alloys - Gold alloys of zirconium and gallium content - Inductively coupled plasma
Plasma atomic emission spectrometry;
--- GB/T 15072.19-2008 precious metal alloys - silver vanadium alloys and magnesium content - Inductively coupled plasma
Plasma atomic emission spectrometry.
This section GB/T 15072-2008 Part 7.
This Part replaces GB/T 15072.7-1994 and GB/T 15072.19-1994 "precious metals and their alloys - Gold
Measuring the amount of chromium alloys Determination "and GB/T 15072.18-1994" precious metals and their alloys - Gold alloys of iron content
set".
This portion of the GB/T 15072.7-1994, GB/T 15072.19-1994 and GB/T 15072.18-1994 compared to the main like
Under changes.
--- The original three standards into a revised standard, the GB/T 15072.7-1994 and GB/T 15072.19-
1994's "precious metals and their alloys - Gold alloys - Determination of chromium content" and GB/T 15072.18-1994 of
"Precious metals and their alloys - Gold alloys - Determination of iron content" Merge amended to "precious metal alloys - party
Fagin alloy of chromium and iron content - Inductively coupled plasma atomic emission spectrometry ";
--- By inductively coupled plasma atomic emission spectrometry instead of the original criteria used coulometry, ferrous sulfate titration and spectrophotometry
Law degree;
--- The scope of the original standard method AuNiCr5-1, AuNiCr5-2, AuNiFeZr9-2-0.3, AuNiFeZr5-1.5-0.3 together
Gold extended to AuNiCr, AuFeCr and AuNiFeZr series alloys, which AuFeCr of new series;
--- Chromium measurement range (mass fraction) from 0.5% to 3% expansion to 0.5% to 7%; iron from 1% to 3% expansion to 0.5% to 7%;
--- Repeatability and allows the use of relatively poor poor allowed to replace the original criteria used.
Appendix A of this section is an informative annex.
This part is proposed by the China Nonferrous Metals Industry Association.
The non-ferrous metal part by the National Standardization Technical Committee.
This section is your research Platinum Ltd. is responsible for drafting.
The main drafters of this section. Fang Wei, Luo Yijiang, Ma Yuan, Li Kai, and Li Guangli, Zhu Wuxun.
This part certifier. and He Ping, Sun Xiaodong.
This part of the standard replaces the previous editions are.
--- GB/T 15072.7-1994, GB/T 15072.19-1994, GB/T 15072.18-1994.
Precious metal alloys -
Determination of gold alloy of chromium and iron content
Inductively coupled plasma atomic emission spectrometry
1 Scope
This section provides the determination of gold alloy of chromium and iron content.
This section applies to AuNiCr, measured AuFeCr and AuNiFeZr alloy of chromium and iron content. Measurement range (mass fraction).
0.5% to 7%.
2 Normative references
The following documents contain provisions which, through reference in this text, constitute provisions of this part. For dated references, subsequent
Amendments (not including errata content) or revisions do not apply to this section, however, encourage the parties to this part of the research agreement
Whether the latest versions of these documents. For undated reference documents, the latest versions apply to this section.
371 precious metal alloys - General rules and regulations YS/T
3 Method summary
Samples with hydrochloric acid - nitric acid mixture dissolved sulfite reduction and separation of gold, yttrium is added as an internal standard by inductively coupled plasma atomic emission spectrometry
Act (hereinafter referred to as ICP-AES) was measured to calculate the mass fraction of iron and chromium.
4 Reagents and materials
Unless otherwise indicated, this part of the reagents and materials shall comply with the provisions of YS/T 371's.
4.1 Argon ((Ar) ≥99.99%).
4.2 hydrochloride (ρ1.19g/mL).
Nitrate 4.3 (ρ1.42g/mL).
4.4 hydrochloric acid - nitric acid mixture (3 + 1), when using the existing service.
Hydrochloride 4.5 (1 + 9).
4.6 sulfite (to SO2, at a level of not less than 6%).
4.7 Chromium stock standard solution. Accurately weigh 0.1000g chromium ((Cr) ≥99.99%), placed in 200mL beaker. Join
5mL hydrochloric acid (4.2) and 2mL nitric acid (4.3), cover the surface of the pan, over low heat until dissolved completely. Transferred to 100mL container with hydrochloric acid (4.5)
Volumetric flask and dilute to the mark. Mix well. This solution 1mL 1mg containing chromium.
4.8 iron stock standard solution. Accurately weigh 0.1000g metallic iron ((Fe) ≥99.99%), placed in 200mL beaker. Join
10mL mixed acid (4.4), cover the surface of the pan, over low heat until dissolved completely evaporated to about 5mL. Transferred to 100mL container with hydrochloric acid (4.5)
Volumetric flask and dilute to the mark. Shake well. 1mL solution containing 1mg iron.
4.9 yttrium internal standard solution. Weigh 0.1270g yttria ((Y2O3) ≥99.99%), placed in 200mL beaker. Join 5mL
5mL water and hydrochloric acid (4.2), cover the surface of the pan, over low heat until dissolved completely. Cooling to room temperature, transferred to 100mL capacity with hydrochloric acid (4.5)
Flask and dilute to the mark. Mix well. 1mL solution containing 1mg yttrium.
5 Instruments
ICP-AES instrument. Under optimum working conditions for those who can reach the following indicators can be used.
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