Gases - Fast analysis of inert gases
Applications | 2011 | Agilent TechnologiesInstrumentation
Rapid and precise analysis of inert gases is essential for environmental monitoring, industrial process control, and quality assurance. Short analysis times reduce sample backlogs and enhance decision-making in critical applications.
This application note demonstrates a micro-GC method capable of separating and identifying five inert gases in under 150 seconds. The study focuses on optimizing conditions using an Agilent PoraPLOT Q column and the Agilent 490 Micro GC system.
Under the optimized conditions, five target gases—methane, krypton, carbon dioxide (CO₂), nitrous oxide (N₂O), and xenon—were baseline-resolved within 150 seconds. The method exhibited consistent peak shapes, high reproducibility, and minimal carryover, even at elevated concentrations.
Ongoing advancements in micro-GC detector sensitivity and column technology are expected to further shorten analysis times and lower detection limits. Integration with automated sampling systems and advanced data analytics will expand remote monitoring and real-time process control capabilities.
The described micro-GC approach delivers rapid, reliable separation of inert gases in under 150 seconds. Its simplicity, speed, and reproducibility make it an attractive solution for environmental and industrial gas analysis applications.
Agilent Technologies Inc. (2011) Application Note A01633: Fast GC analysis of inert gases using PoraPLOT Q column and Agilent 490 Micro GC
GC, GC columns, Consumables
IndustriesEnvironmental
ManufacturerAgilent Technologies
Summary
Significance of the Topic
Rapid and precise analysis of inert gases is essential for environmental monitoring, industrial process control, and quality assurance. Short analysis times reduce sample backlogs and enhance decision-making in critical applications.
Goals and Study Overview
This application note demonstrates a micro-GC method capable of separating and identifying five inert gases in under 150 seconds. The study focuses on optimizing conditions using an Agilent PoraPLOT Q column and the Agilent 490 Micro GC system.
Methodology and Instrumentation
- Technique: Micro-GC for rapid gas analysis
- Column: Agilent PoraPLOT Q, fused silica, 0.32 mm × 10 m, 10 µm film
- Temperature: 30 °C
- Carrier Gas: Helium at 50 kPa (0.5 bar)
- Injection: 30 ms pulse without heated inlet
- Matrix: Oxygen-rich environment
Main Results and Discussion
Under the optimized conditions, five target gases—methane, krypton, carbon dioxide (CO₂), nitrous oxide (N₂O), and xenon—were baseline-resolved within 150 seconds. The method exhibited consistent peak shapes, high reproducibility, and minimal carryover, even at elevated concentrations.
Benefits and Practical Applications
- Sub-3-minute cycle time suitable for high-throughput screening
- Minimal sample preparation due to direct injection
- Reduced helium consumption increases cost-efficiency
- Applicability to environmental labs, process monitoring, and leak detection
Future Trends and Opportunities
Ongoing advancements in micro-GC detector sensitivity and column technology are expected to further shorten analysis times and lower detection limits. Integration with automated sampling systems and advanced data analytics will expand remote monitoring and real-time process control capabilities.
Conclusion
The described micro-GC approach delivers rapid, reliable separation of inert gases in under 150 seconds. Its simplicity, speed, and reproducibility make it an attractive solution for environmental and industrial gas analysis applications.
Reference
Agilent Technologies Inc. (2011) Application Note A01633: Fast GC analysis of inert gases using PoraPLOT Q column and Agilent 490 Micro GC
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