Standard No.:	GB/T 5121.15-2008
Chinese Name:	铜及铜合金化学分析方法 第15部分：钴含量的测定
English Name:	Methods for chemical analysis of copper and copper alloys—Part 15:Determination of cobalt 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/T13293.7-1991 Higher purity copper cathode. Determination of iron, cobalt and lead contents. Zeeman effect electrothermal atomic absorption spectrometric method
Language:	English
File Format:	PDF
Word Count:	7000 words
Price(USD):	210 (USD)
Delivery:	via email in 1-3 business day

1.1 Scope
This part specifies the determination methods for cobalt content in copper and copper alloys.
This method is applicable to the determination of cobalt content in copper and copper alloys. The determination scope is 0.00010%~0.0020%.
1.2 Principle
Dissolve the test sample with nitric acid, inject the generated test solution of certain volume into the electrothermal atomizer, measure the cobalt absorbance at the wavelength of 240.7nm with Zeeman effect atomic absorption spectrometer, and then calculate the mass fraction of cobalt in the adoption of working curve method.
1.3 Reagents
Unless otherwise stated, only identified analytical reagents and distilled water, deionized water or water with equivalent purity shall be used during analysis. Vessels used for test shall be thoroughly rinsed with water after being soaked with nitric acid (1.3.3) for 12h.