Standard No.:	GB/T 5121.1-2008
Chinese Name:	铜及铜合金化学分析方法 第1部分：铜含量的测定
English Name:	Methods for chemical analysis of copper and copper alloys—Part 1:Determination of copper content
Professional Classification:	H13 Heavy metals and their alloys analysis method
Professional Classification:	GB National Standard
ICS Classification:	77.120.30 Copper and copper alloys
Issued by:
Issued on:	2008-06-17
Implemented on:	2008-12-01
Status:	VALID
Replace:	GB/T5121.1-1996 Methods for chemical analysis of copper; The electrolytic method for the determination of copper content
Language:	English
File Format:	PDF
Word Count:	8000 words
Price(USD):	240 (USD)
Delivery:	via email in 1-3 business day

1 Method I Direct Electrolytic-Atomic Absorption Spectrometry

1.1 Scope
This method specifies the determination methods for copper content in copper and copper alloys.
This method is applicable to the determination of copper content in copper and copper alloys. The determination scope is 50.00%~99.00%.
1.2 Principle
The test portion is dissolved by nitric acid and hydrofluoric acid to reduce nitrogen oxide with hydrogen peroxide, then the lead is added to reduce the platinum loss on the anode so that the copper is exhaled on platinum cathode by electrolysis and then stoved and weighed. The copper content remained in the electrolyte is determined with flame atomic absorption spectrometry.