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GB/T 15072.18-2008: Test method of precious metal alloys -- Determination of zirconium and gadolinium contents for gold alloys -- Inductively coupled plasma atomic emission spectrometry
Status: Valid GB/T 15072.18: Evolution and historical versions
| Standard ID | Contents [version] | USD | STEP2 | [PDF] delivered in | Standard Title (Description) | Status | PDF |
| GB/T 15072.18-2008 | English | 189 |
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Test method of precious metal alloys -- Determination of zirconium and gadolinium contents for gold alloys -- Inductively coupled plasma atomic emission spectrometry
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GB/T 15072.18-2008
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| GB/T 15072.18-1994 | English | 199 |
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Gold alloys-Determination of iron content
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GB/T 15072.18-1994
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Basic data | Standard ID | GB/T 15072.18-2008 (GB/T15072.18-2008) | | Description (Translated English) | Test method of precious metal alloys -- Determination of zirconium and gadolinium 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Count Estimation | 8,821 | | Date of Issue | 2008-03-31 | | Date of Implementation | 2008-09-01 | | Older Standard (superseded by this standard) | GB/T 15072.20-1994 | | Quoted Standard | YS/T 371 | | Regulation (derived from) | National Standard Approval Announcement 2008 No.5 (Total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 zirconium and gallium content. This section applies to the determination AuNiFeZr and AuGa alloys of zirconium and gallium content. Measuring range (mass fraction): 0. 1% to 2%. | GB/T 15072.18-2008: Test method of precious metal alloys -- Determination of zirconium and gadolinium contents for gold alloys -- Inductively coupled plasma atomic emission spectrometry
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Test method of precious metal alloys. Determination of zirconium and gadolinium 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 15072.20-1994
Methods for chemical analysis of precious metal alloys
Gold alloys - Determination of zirconium and gallium content
Inductively coupled plasma atomic emission spectrometry
Posted.2008-03-31
2008-09-01 implementation
General Administration of Quality Supervision, Inspection and Quarantine of People's Republic of China
China National Standardization Administration released
Foreword
This standard is GB/T 15072-1994 "Precious metals and their alloys chemical analysis method" (all parts) of the integration of amendments, divided into
19 sections.
--- GB/T 15072.1-2008 Precious metal alloys - Determination of gold, gold, platinum and palladium alloys - Determination of ferrous sulfate
Potentiometric titration;
--- GB/T 15072.2-2008 Methods for chemical analysis of precious metal alloys Determination of silver content in silver alloys Sodium chloride potential drops
Fixed method
--- GB/T 15072.3-2008 Methods for chemical analysis of noble metal alloys - Determination of platinum content in gold, platinum and palladium alloys - Potassium permanganate
Current titration method;
--- GB/T 15072.4-2008 Methods for chemical analysis of noble metal alloys Determination of palladium content in palladium and silver alloys Dimethylglyoxal
Oxime weight method;
--- GB/T 15072.5-2008 Methods for chemical analysis of noble metal alloys Determination of silver content in gold and palladium alloys Potassium iodide potential drops
Fixed method
--- GB/T 15072.6-2008 Methods for chemical analysis of precious metal alloys Determination of amount of iridium in platinum and palladium alloys Ferrous sulfate current
titration;
--- GB/T 15072.7-2008 Methods for chemical analysis of precious metal alloys - Determination of chromium and iron in gold alloys Inductance coupling
Ion atomic emission spectrometry;
--- GB/T 15072.8-2008 Methods for chemical analysis of noble metal alloys Determination of copper content in gold, palladium and silver alloys Thiourea precipitation
EDTA complex back titration method;
--- GB/T 15072.9-2008 Methods for chemical analysis of precious metal alloys Determination of indium content in gold alloys EDTA complex droplet
Fixed method
--- GB/T 15072.10-2008 Precious metal alloys - Determination of the amount of nickel in gold alloys EDTA complex droplet
Fixed method
--- GB/T 15072.11-2008 Methods for chemical analysis of noble metal alloys Determination of gadolinium and beryllium in gold alloys Inductance coupling
Ion atomic emission spectrometry;
--- GB/T 15072.12-2008 Methods for chemical analysis of noble metal alloys - Determination of vanadium content in silver alloys - Hydrogen peroxide spectrophotometric
Degree method
--- GB/T 15072.13-2008 Methods for chemical analysis of noble metal alloys Determination of the amount of tin, cerium and lanthanum in silver alloys Inductance coupling
Combined plasma atomic emission spectrometry;
--- GB/T 15072.14-2008 Methods for chemical analysis of noble metal alloys - Determination of aluminum and nickel content in silver alloys Inductance coupling
Ion atomic emission spectrometry;
--- GB/T 15072.15-2008 Methods for chemical analysis of noble metal alloys Determination of nickel, zinc and manganese content of gold, silver and palladium alloys
Inductively coupled plasma atomic emission spectrometry;
--- GB/T 15072.16-2008 Methods for chemical analysis of noble metal alloys - Determination of copper and manganese in gold alloys - Inductance coupling, etc.
Ion atomic emission spectrometry;
--- GB/T 15072.17-2008 Methods for chemical analysis of noble metal alloys Determination of tungsten content in platinum alloys Tungsten trioxide
Method
--- GB/T 15072.18-2008 Methods for chemical analysis of noble metal alloys - Determination of zirconium and gallium content in gold alloys - Inductance coupling, etc.
Ion atomic emission spectrometry;
--- GB/T 15072.19-2008 Methods for chemical analysis of noble metals - Determination of vanadium and magnesium in silver alloys - Inductance coupling, etc.
Ion Atomic Emission Spectrometry.
This section GB/T 15072-2008 Part 18.
This Part replaces GB/T 15072.20-1994 "Precious metals and their alloys - Determination of zirconium content in gold alloys - Determination of zirconium content.
This section compared with GB/T 15072.20-1994, the main changes are as follows.
--- Name from "Determination of the amount of zirconium in gold and its alloys - Determination of the amount of zirconium" was changed to "Precious metal alloy chemical analysis
Methods for determination of zirconium and gallium in gold alloys by inductively coupled plasma atomic emission spectrometry ";
--- The use of inductively coupled plasma atomic emission spectrometry instead of the original standard spectrophotometry;
--- The scope of application of the method from the original standard AuNiFeZr9-2-0.3, AuNiFeZr5-1.5-0.3 alloy extended to AuNi-
FeZr, AuGa series of alloys; which AuGa for the new series;
--- Determination of zirconium (mass fraction) from 0.1% to 0.5% extended to 0.1% ~ 2%;
--- Increasing the simultaneous determination of gallium, determination of the range (mass fraction) of 0.1% to 2%;
--- The use of repeatability and relative allowance to replace the original standards to allow the poor use of poor.
Appendix A of this section is informative appendix.
This part is proposed by China Nonferrous Metal Industry Association.
This part of the National Standardization Technical Committee non-ferrous metals centralized.
This part of your research Platinum Co., Ltd. is responsible for drafting.
The main drafters of this section. Wang Ying, Fang Wei, Ma Yuan, Li Kai, Luo Yijiang, Li Guangli.
The main part of the validator. He and Ping, single cloud.
This part of the standard replaces the previous editions are.
--- GB/T 15072.20-1994.
Methods for chemical analysis of precious metal alloys
Gold alloys - Determination of zirconium and gallium content
Inductively coupled plasma atomic emission spectrometry
1 Scope
This section provides the method of determination of zirconium and gallium in gold alloys.
This section applies to AuNiFeZr and AuGa alloy determination of zirconium and gallium content. Measuring range (mass fraction). 0.1% ~ 2%.
2 Normative references
The following documents contain provisions which, through reference in this section, become the provisions of this section. All dated references, which are subsequently owned
Amendments (not including errata content) or revisions do not apply to this section, however, encouraged to reach an agreement under this section of the parties to study
Whether you can use the latest versions of these files. For undated references, the latest version applies to this section.
YS/T 371 Methods for Chemical Analysis of Precious Metal Alloys and General Provisions
3 method summary
The sample was dissolved with a mixed acid of hydrochloric acid and nitric acid, and the gold was reduced by reduction with sulfurous acid. Inductively coupled plasma atomic emission spectrometry (hereinafter referred to as
ICP-AES) to calculate the mass fraction of zirconium and gallium.
4 Reagents and materials
Unless otherwise indicated, the reagents and materials used in this section should be consistent with the provisions of YS/T 371.
4.1 Argon ((Ar) ≥99.95%).
4.2 Hydrochloric acid (ρ 1.19 g/mL).
4.3 Nitric acid (ρ1.42g/mL).
4.4 hydrochloric acid - nitric acid mixed acid (4 +1), when used with the current.
4.5 Hydrochloric acid (1 + 9).
Sulfuric acid (SO2, content of not less than 6%).
4.7 gallium standard stock solution. Weigh 0.1000g of metal gallium ((Ga) ≥ 99.95%), placed in a 150mL beaker. Add 10 mL
Hydrochloric acid (4.5), cover the surface of the dish, low temperature heating until dissolved completely. Cool to room temperature, transfer to 100 mL volumetric flask with hydrochloric acid (4.5) and dilute
Release to the mark. Mix well. This solution 1 mL contains 1.000 mg gallium.
4.8 zirconium standard stock solution
4.8.1 Preparation. Weigh 3.532g zirconyl chloride (ZrOCl2 · 8H2O), placed in 250mL beaker, add 50mL hydrochloric acid (4.5),
Dissolved completely into the.200mL volumetric flask, diluted with water to the mark. Mix well. This solution 1 mL contains 5 mg zirconium.
4.8.2 Calibration. Pipette 10.00mL zirconium standard stock solution (4.8.1) in 400mL beaker, add 40mL hydrochloric acid (4.2) and
100mL water, heated to near boiling. Add 50mL of mandelic acid (150g/L) with stirring and stir until the precipitate is precipitated.
90 ℃ insulation 0.5h. Stand for more than 4h. Slow filter paper filtration. With hot wash solution (per liter of solution containing 20g mandelic acid, 20mL salt
Acid (4.2)) for 7-8 times. The precipitate, together with the filter paper, is placed in a porcelain crucible, which is then ashed, transferred to a high temperature furnace and fired at 1000 ° C for 1 hour. take out
crucible. Slightly cold, into the dryer, cooled to room temperature and then weighed. Parallel calibration of three, the difference between the three weighing should not exceed 1.0mg, take
The average.
According to equation (1) calculate the mass concentration of zirconium.
ρ0 =
(1)
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