GB/T 42273-2022 in English
VALIDMethods for chemical analysis of zirconium compounds—Determination of calcium,hafnium,titanium,sodium,iron,chromium,cadmium,zinc,manganese,copper,nickel,lead contents—Inductively coupled plasma atomic emission spectrometry
- Issued on:2022-12-30
- Implemented on:2023-04-01
- File Format:PDF
- Delivery:Via email within 1~3 business days
$146.00
《GB/T 42273-2022锆化合物化学分析方法 钙、铪、钛、钠、铁、铬、镉、锌、锰、铜、镍、铅含量的测定 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
Analysis of core detection technology requirements
This method uses a high-precision inductively coupled plasma emission spectrometer to achieve simultaneous detection of trace elements in a variety of zirconium compounds. A gradient pretreatment process is established for samples of different forms to ensure accurate and reliable test results.
Comparison of element measurement range and sensitivity
| Element category | Detection range (wt%) | Sensitivity (ppm) |
|---|---|---|
| High sensitivity elements | Ca/Ti/Fe, etc. ≤0.05% | 0.005 |
| Wide range elements | Hf up to 2% | 1.0 |
Analysis of implementation technical requirements
Typical sample pretreatment process
1.90 g of zirconium hydroxide sample was accurately weighed, dissolved in 5 mL of concentrated hydrochloric acid, and then quantitatively diluted to ensure that the matrix concentration was controlled within 8 g/L, effectively eliminating matrix interference.
Key instrument parameter settings
- RF power: ≥1.2kW
- Nebulizer gas pressure: 0.2MPa
- Integration time: 3s×3 times
Implementation notes
Improvements compared to the previous version of the standard include:
- Added heavy metal detection items such as Cd and Pb
- Matrix matching solvent dosage optimized by 30%
- Repeatability RSD improved to <5%
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