GB/T 5121.8-2008 in English

《GB/T 5121.8-2008铜及铜合金化学分析方法 第8部分：氧含量的测定》由TC243（全国有色金属标准化技术委员会）归口，TC243SC2（全国有色金属标准化技术委员会重金属分会）执行，主管部门为中国有色金属工业协会。
ＧＢ／Ｔ５１２１《铜及铜合金化学分析方法》共有２７部分。本部分为第８部分。本部分代替ＧＢ／Ｔ５１２１．８―１９９６《铜及铜合金化学分析方法　氧量的测定》。本部分规定了铜及铜合金中氧含量的测定方法。
本部分适用于铜及铜合金中氧含量的测定。测定范围：0.000 30％～0.11％。本部分与ＧＢ／Ｔ５１２１．８―１９９６相比，主要变化如下：
―――略去“引用标准”一节；
―――对原标准文本格式进行了修订；
―――补充了质量保证和控制条款，增加了精密度条款。

1 Scope

This part specifies the determination methods for oxygen content in copper and copper alloys.
This part is applicable to the determination of oxygen content in copper and copper alloys. The determination range is 0.00030% ~ 0.11%.

2 Principle

Put the prepared test portion in to a carbon crucible that had been degassed at high temperature, and heat the portion until melting under helium (or argon) so that the oxygen in such portion is separated out of the metal as carbon monoxide or is separated out, passing through a 400℃ rare earth copper oxide furnace along with the helium (argon) for conversion, as carbon dioxide. Import into an infrared detector for the determination and the mass of oxygen is automatically indicated by the computer.

Foreword I
1 Scope 1
2 Principle 1
3 Reagents and Materials 1
4 Apparatus 2
5 Test Sample 3
6 Procedures 3
7 Calculation of Analysis Results 4
8 Precision 4
9 Quality Assurance and Control 5