GB/T 43607-2023
Method for analysis of palladium ingots—Determination of silver, aluminum, gold, bismuth, chromium, copper, iron, iridium, magnesium, manganese, nickel, lead, platinum, rhodium, ruthenium, silicon, ti (English Version)

Standard No.

GB/T 43607-2023

Language

Chinese, Available in English version

Release Date

2023

Published By

General Administration of Quality Supervision, Inspection and Quarantine of the People‘s Republic of China

Latest

GB/T 43607-2023

Introduction

GB/T 43607-2023 Analysis method of palladium ingot and application of spark discharge atomic emission spectrometry

Background and significance of the standard

Palladium (Pd) is an important rare metal, widely used in automotive catalytic converters, electronic components and other fields. With the scarcity of palladium resources and the growth of application demand, the accurate determination of its purity and impurity element content has become particularly important. The formulation of GB/T 43607-2023 "Analysis method of palladium ingot - Determination of silver, aluminum, gold, bismuth, chromium, copper, iron, iridium, magnesium, manganese, nickel, lead, platinum, zinc, ruthenium, silicon, tin and zinc content - spark discharge atomic emission spectrometry" provides a standardized basis for the quantitative analysis of 18 impurity elements in palladium ingots.

Comparison of standard frameworks

Standard dimensions	GB/T 43607-2023	International comparison	Advantage analysis
Scope of application	Determination of impurity elements in palladium ingots with Pd content of 99.90%~99.99%	Similar ISO standards cover a wider range	Highly targeted and requires higher precision
Analysis methods	Spark discharge atomic emission spectrometry (SP-AES)	ICP-OES, AAS, etc.	Applicable to high-purity metal samples
Detection limit	Element mass fraction can be as low as 0.0004% (silver)	Usually ppm level	High sensitivity, suitable for trace analysis

Instrument and technical principles

Spark atomic emission spectrometer is the core analytical tool of this standard. Its working principle is based on the high-energy rays generated by spark discharge to excite the sample, atomize it and emit a spectrum of specific wavelengths.

• Core components: spectrometer (reciprocal dispersion ≤0.6nm/mm), detector and argon system
• Technical advantages:
  • Simultaneous determination of multiple elements
  • High sensitivity and resolution
  • Suitable for analysis of high-purity metal samples

Sample preparation and analysis steps

The sample preparation process includes:

1. Uniformity treatment: Ensure that the sample is free of pores, inclusions and cracks
2. Surface processing: Use a lathe or milling machine to make a smooth plane, or use a hydraulic press to press it into a sheet
3. Cleaning treatment: Wipe the sample surface with anhydrous ethanol when necessary

0.0002 0.0002 0.0002 0.0005 0.0003 0.0006

Implementation Suggestions

Case Analysis: A precious metals company used this standard method to test a batch of palladium ingot samples. The results showed that this method can effectively distinguish high-purity and low-purity palladium ingots, and the measured values are in good agreement with the international reference values.

GB/T 43607-2023 Referenced Document

• GB/T 6379.1 Accuracy(trueness and precision)of measurement methods and results Part 1:General principles and definitions
• GB/T 6379.2 Accuracy(trueness and precision)of measurement methods and results-Part 2:Basic method for the determination of repeatability and reproducibility of a standard measurement method

GB/T 43607-2023 history

• 2023 GB/T 43607-2023 Method for analysis of palladium ingots—Determination of silver, aluminum, gold, bismuth, chromium, copper, iron, iridium, magnesium, manganese, nickel, lead, platinum, rhodium, ruthenium, silicon, ti

Standard and Specification