GB/T 14849.8-2015 in English
VALIDMethods for chemical analysis of silicon metal — Part 8: Determination of copper content — Atomic absorption spectrometric method
- Issued on:2015-09-11
- Implemented on:2016-08-01
- File Format:PDF
- Delivery:Via email within 1~3 business days
$107.00
《GB/T 14849.8-2015工业硅化学分析方法 第8部分：铜含量的测定 原子吸收光谱法》由TC243（全国有色金属标准化技术委员会）归口，TC243SC1（全国有色金属标准化技术委员会轻金属分会）执行，主管部门为中国有色金属工业协会。
GB/T 14849的本部分规定了工业硅中铜含量的测定方法。
本部分适用于工业硅中铜含量的测定测定范围(质量分数)：0.001 0%~0.50%。
Introduction
1. Standard background and technological evolution
GB/T 14849 "Chemical analysis methods for industrial silicon" is an important part of the national standard and is divided into 11 parts. Part 8 (GB/T 14849.8-2015) is specifically for the determination of copper content in industrial silicon, using atomic absorption spectrometry as the main technical means. This method has higher sensitivity and accuracy than traditional spectrophotometry.
2. Comparison of Standard Frameworks
| Standard Part | Measurement Object | Method Used | Wavelength Range(nm) |
|---|---|---|---|
| Part 8 | Copper Content | Atomic Absorption Spectrometry | 324.7 |
| Part 9 | Titanium Content | Spectrophotometry | - |
3. Implementation Suggestions
Instrument selection:Use a flame atomic absorption spectrometer equipped with a copper hollow cathode lamp, and ensure that the wavelength is set at 324.7 nm.
Reagent preparation:Prepare copper standard storage solution and standard solution in strict accordance with standard requirements, and the water used must comply with GB/T 6682.
Sample treatment:Industrial silicon samples must pass through a 0.149 mm standard sieve, and use a magnet to remove iron filings on the surface.
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