GB/T 13747.25-2017 in English
VALIDMethods for chemical analysis of zirconium and zirconium alloys- Part 25:Determination of niobium content- 2-( 5-bromo-2-pyridylazo)-5-diethylam inophenol spectrophotometry and inductively coupled plasma atomic emission spectrometry
- Issued on:2017-09-29
- Implemented on:2018-04-01
- File Format:PDF
- Delivery:Via email within 1~3 business days
$156.00
《GB/T 13747.25-2017锆及锆合金化学分析方法 第25部分:铌量的测定 5-Br-PADAP分光光度法和电感耦合等离子体原子发射光谱法》由TC243(全国有色金属标准化技术委员会)归口,TC243SC3(全国有色金属标准化技术委员会稀有金属分会)执行,主管部门为中国有色金属工业协会。
Introduction
Interpretation of the Standard for Determination of Niobium Content in Zirconium and Zirconium Alloys
| Method | Determination Range | Sensitivity | Applicable Scenarios |
|---|---|---|---|
| 5-Br-PADAP Spectrophotometry | 0.20%~3.00% | Medium sensitivity | Suitable for routine detection, easy to operate |
| Inductively Coupled Plasma Atomic Emission Spectrometry | 0.050%~3.00% | High sensitivity | Suitable for trace analysis, high accuracy |
Detailed explanation of the method
5-Br-PADAP spectrophotometry
This method generates a colored complex with niobium and 5-Br-PADAP, and measures the absorbance with a spectrophotometer. The reagent preparation is complex, and the solution concentration and temperature conditions must be precisely controlled.
Inductively coupled plasma atomic emission spectrometry
This method uses ICP technology to directly determine the concentration of niobium, which is suitable for high-purity materials and trace analysis. Attention should be paid to instrument calibration and elimination of environmental interference factors.

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