Nu Instruments | Trace Analysis of Non-Metallic Elements with Astrum GD‑MS
This application note demonstrates how the Astrum GD‑MS enables ultra-trace measurement of non-metallic elements in metal matrices. It highlights strong correlation with certified reference materials and excellent long-term reproducibility. Oxygen, carbon, sulphur and hydrogen are quantified at very low levels across a range of samples.
The Astrum GD‑MS represents a new generation of glow discharge mass spectrometry, designed for high-performance impurity analysis. It combines proven design features with improved source design, electronics and vacuum systems to achieve stable, reproducible results. Its capability to analyse both conductive and non-conductive samples supports a wide range of materials.
A low-flow glow discharge source, combined with cryo-cooling and high-purity gas, reduces background interference significantly. This allows reliable detection of non-metallic elements such as oxygen, carbon and sulphur in steel, as well as hydrogen in titanium. Measurements show strong linear correlations with certified reference materials, demonstrating analytical accuracy.
Reproducibility testing over a period of more than one year confirms excellent stability, with minimal calibration required. The system achieves very low background equivalent concentrations, enabling trace-level quantification. Overall, the Astrum GD‑MS provides a robust solution for sensitive and repeatable elemental analysis in demanding applications.
A low-flow glow discharge source, combined with cryo-cooling and high-purity gas, reduces background interference significantly. This allows reliable detection of non-metallic elements such as oxygen, carbon and sulphur in steel, as well as hydrogen in titanium. Measurements show strong linear correlations with certified reference materials, demonstrating analytical accuracy.
Reproducibility testing over a period of more than one year confirms excellent stability, with minimal calibration required. The system achieves very low background equivalent concentrations, enabling trace-level quantification. Overall, the Astrum GD‑MS provides a robust solution for sensitive and repeatable elemental analysis in demanding applications.
Key Takeaways:
- Enables ultra-trace detection of non-metallic elements including O, C, S and H in metals.
- Demonstrates strong correlation with certified reference materials across multiple matrices.
- Provides excellent long-term reproducibility with minimal calibration requirements.
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