GB/T 15072.1-2025 Active National standards

GB/T 15072.1-2025 Methods for chemical analysis of precious metal alloys—Part 1:Determination of gold content

GB/T 15072.1-2025 Methods for chemical analysis of precious metal alloys—Part 1:Determination of gold content

Publish Date: 2025-08-29 Implement Date: 2026-03-01 For services related to genuine standard inquiry, procurement, translation, and other related services in China, please Contact Us

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Basic Information

Standard Code: GB/T 15072.1-2025

Standard Type: National standards

Standard Status: Active

is_force_gb: no

CCS Name: Analysis methods for precious metals and their alloys

ICS Name: Other non-ferrous metals and their alloys

Publish Date: 2025-08-29

Implement Date: 2026-03-01

Pages: 20 pages

Scope

This document describes the methods for determining the gold content in precious metal alloys by the potentiometric titration method with ferrous sulfate and the fire assay weight method.
This document is applicable to the determination of gold content in precious metal alloys. The measurement range (mass fraction) of the potentiometric titration method with ferrous sulfate is 3.00% to 99.60%; the measurement range (mass fraction) of the fire assay weight method is 5.00% to 99.60%.
In this document, the fire assay weight method is suitable for samples with a platinum group metal content of less than 0.005%.

Development Information

Word Count: 23 Thousand words Pages: 20 pages

Same series standard

GB/T 15072.2-2025 Method for chemical analysis of precious metal alloys—Part 2:Determination of silver content GB/T 15072.3-2025 Methods for chemical analysis of precious metal alloys—Part 3:Determination of platinum content GB/T 15072.4-2025 Methods for chemical analysis of precious metal alloys—Part 4:Determination of palladium content GB/T 15072.6-2025 Methods for chemical analysis of precious metal alloys—Part 6:Determination of iridium content GB/T 15072.20-2025 Methods for chemical analysis of precious metal alloys—Part 20:Determination of rhodium content

Replace the following standards

GB/T 15072.1-2008 Test method of precious alloys—Determination of gold content for gold,platinum and palladium alloys—Potentiometric titration using ferrous sulfate

Referenced Standards

GB/T 8170-1987 Rules for rounding off of numberical values GB/T 8170-2008 Rules of rounding off for numerical values & expression and judgement of limiting values

Related Standards

GB/T 13840-1992 Abolished

GB/T 13840-1992 Wafer carriers

Publish Date: 1992-12-28

GB/T 15677-1995 Replaced

GB/T 15677-1995 Lanthanum metal

Publish Date: 1995-08-11

GB/T 3136-1995 abolished_transferred

GB/T 3136-1995 Tantalum powders

Publish Date: 1995-10-17

GB/T 3463-1995 Abolished

GB/T 3463-1995 Tantalum wires

Publish Date: 1995-10-17

GB/T 3628-1995 Replaced

GB/T 3628-1995 Tantalum and tantalum alloy foils

Publish Date: 1995-10-17

GB/T 16476-1996 Replaced

GB/T 16476-1996 Scandium metal

Publish Date: 1996-07-09