GB/T 15072.4-2025 English PDF

Standard ID	USD	BUY PDF	Lead-Days	Standard Title (Description)	Status
GB/T 15072.4-2025	RFQ	ASK	3 days	Methods for chemical analysis of precious metal alloys - Part 4: Determination of palladium content	Valid
GB/T 15072.4-2008	169	Add to Cart	3 days	Test method of precious metal alloys -- Determination of palladium content for palladium and silver alloys -- Butanedione dioxime gravimetry	Valid
GB/T 15072.4-1994	199	Add to Cart	2 days	Palladium, silver alloys-Determination of palladium content	Obsolete

Basic data

Standard ID: GB/T 15072.4-2025 (GB/T15072.4-2025)
Description (Translated English): Methods for chemical analysis of precious metal alloys - Part 4: Determination of palladium content
Sector / Industry: National Standard (Recommended)
Date of Implementation: 2026-03-01
Older Standard (superseded by this standard): GB/T 15072.4-2008

GB/T 15072.4-2008: Test method of precious metal alloys -- Determination of palladium content for palladium and silver alloys -- Butanedione dioxime gravimetry

---This is a DRAFT version for illustration, not a final translation. Full copy of true-PDF in English version (including equations, symbols, images, flow-chart, tables, and figures etc.) will be manually/carefully translated upon your order.
Test method of precious metal alloys. Determination of palladium content for palladium and silver alloys. Butanedione dioxime gravimetry ICS 77.120.99 H68 National Standards of People's Republic of China Replacing GB/T 15072.4-1994 Precious metal alloys - Palladium, palladium measured amount of silver alloy Dimethyl glyoxal gravimetric method 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 of Part 415072-2008. This Part replaces GB/T 15072.4-1994 "precious metals and their alloys - Determination of palladium, silver-palladium alloy determining the amount." This section compared with the GB/T 15072.4-1994, have the following main changes. --- Standard name by the GB/T 15072.4-1994 "precious metals and their alloys - Determination of palladium, silver-palladium alloy measured amount Set "to" precious metal alloys - Determination of palladium, palladium-silver alloy measured amount of dimethyl glyoxal oxime gravimetric method. " --- Original standard range PdIr10, PdIr18, PdAgCuAuPtZn30-14-10-10-1, PdAgCu68-27, PdAgCu58-23, PdAgCu65-20, PdAgCu52-28, PdAgCu54-21, AgPd20, AgPd60 modify this standard applies to PdIr, PdAgCu, PdAgCuAuPtZn, measured AgPd palladium alloy content. Measurement range (mass fraction). 4% to 92%. --- According to GB/T 20001.4-2001 format requirements rewritten. 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. Giulia, Zhou Liwen, An Zhongqing, Jinya Qiu, Lau Wan Kit. The non-ferrous metal part by the National Standardization Technical Committee responsible for the interpretation. This part of the standard replaces the previous editions are. --- GB/T 15072.4-1994. Precious metal alloys - Palladium, palladium measured amount of silver alloy Dimethyl glyoxal gravimetric method

1 Scope

This section specifies the determination method of palladium, silver-palladium alloy content. This section applies to PdIr, PdAgCu, PdAgCuAuPtZn, measured AgPd palladium alloy content. Measurement range (mass fraction Number). 4% to 92%.

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

Iridium, palladium and platinum palladium silver-copper-gold-zinc alloy sample was mixed with hydrochloric acid and nitric acid decomposition; palladium silver, copper and silver-palladium alloy sample decomposition with nitric acid. gold Restore separated by sodium nitrite, silver with silver chloride precipitation. In dilute hydrochloric acid medium, with dimethyl glyoxal oxime precipitated palladium, gravimetric method Palladium mass fraction.

4 Reagents and materials

Unless otherwise noted, all reagents and utensils, etc. should be in line with YS/T 371 standard. 4.1 sodium chloride. 4.2 hydrochloride (ρ1.19g/mL). Nitrate 4.3 (ρ1.42g/mL). 4.4 acetic acid (ρ1.05g/mL). 4.5 Ammonia (ρ0.90g/mL). 4.6 hydrochloric acid solution (1 + 1). 4.7 hydrochloric acid solution (1 + 9). 4.8 hydrochloric acid solution (98 + 2). 4.9 hydrochloric acid and nitric acid mixture. 3 per unit volume of hydrochloric acid (4.2) and 1 unit volume of nitric acid (4.3) and mixed. The time is now equipped with. Hydrochloric acid and nitric acid was 4.10. 30 unit volume of hydrochloric acid (4.2) and 1 unit volume of nitric acid (4.3) and mixed. The time is now equipped with. 4.11 ammonia solution (1 + 1). 4.12 sodium nitrite solution (100g/L). 4.13 sodium nitrite solution (10g/L). 4.14 Sodium hydroxide solution (100g/L). 4.15 glyoxal oxime dimethyl ethanol solution (10g/L). 4.16 thymol blue solution (1g/L). Weigh 0.1g of thymol blue in 100mL beaker, add 2.2mL sodium hydroxide solution (4.13), dilute with water to 100mL. ......

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