Sulfur Analyzer Nexis GC-2030FPD GC-2014FPD
Applications | 2017 | ShimadzuInstrumentation
Sulfur compounds in gas streams and liquid matrices can pose environmental, safety, and operational challenges, requiring precise trace-level analysis. The described GC-FPD technique offers enhanced sensitivity and robustness for both inorganic and organic sulfides.
This work demonstrates a gas chromatographic method using a chemically inert micro-packed column coupled to a flame photometric detector (FPD) to separate and quantify sulfide species in natural gas, refinery gas, and liquid samples. The approach aims to avoid detector quenching and sample loss due to adsorption.
The system configuration integrates:
Method compliance follows ASTM-D6228 guidelines.
The method achieves baseline separation of key sulfides (H2S, COS, MeSH, EtSH, DMS, CS2, PrSH, BuSH) from hydrocarbons, with concentration linearity from 0.1 to 100 ppmV. Typical chromatograms display clear, quench-free peaks corresponding to each analyte. Detection limits and calibration performance meet industrial QA/QC requirements.
Advances may include integration with mass spectrometric detection for compound confirmation, automated inline calibration, miniaturized GC modules for field deployment, and AI-driven data analytics to enhance throughput and predictive maintenance.
The described GC-FPD method with an inert micro-packed column provides a robust, sensitive solution for comprehensive sulfur analysis in diverse sample types, delivering reliable performance for industrial and environmental laboratories.
GC
IndustriesEnergy & Chemicals
ManufacturerShimadzu
Summary
Significance of Topic
Sulfur compounds in gas streams and liquid matrices can pose environmental, safety, and operational challenges, requiring precise trace-level analysis. The described GC-FPD technique offers enhanced sensitivity and robustness for both inorganic and organic sulfides.
Objectives and Overview
This work demonstrates a gas chromatographic method using a chemically inert micro-packed column coupled to a flame photometric detector (FPD) to separate and quantify sulfide species in natural gas, refinery gas, and liquid samples. The approach aims to avoid detector quenching and sample loss due to adsorption.
Methodology and Instrumentation
The system configuration integrates:
- One valve sample introduction
- Capillary inlet and capillary column with micro-packed stationary phase
- Chemically inert surfaces to minimize sulfide absorption
- Flame photometric detector optimized for sulfur
- LabSolutions GC workstation software
Method compliance follows ASTM-D6228 guidelines.
Main Results and Discussion
The method achieves baseline separation of key sulfides (H2S, COS, MeSH, EtSH, DMS, CS2, PrSH, BuSH) from hydrocarbons, with concentration linearity from 0.1 to 100 ppmV. Typical chromatograms display clear, quench-free peaks corresponding to each analyte. Detection limits and calibration performance meet industrial QA/QC requirements.
Benefits and Practical Applications
- High selectivity and sensitivity for sulfur compounds
- Prevention of sample adsorption losses via inert pathways
- Versatility across gas and liquid matrices
- Capability to measure additional elements (P, Sn)
- Applicable to natural gas processing, refinery monitoring, environmental testing
Future Trends and Opportunities
Advances may include integration with mass spectrometric detection for compound confirmation, automated inline calibration, miniaturized GC modules for field deployment, and AI-driven data analytics to enhance throughput and predictive maintenance.
Conclusion
The described GC-FPD method with an inert micro-packed column provides a robust, sensitive solution for comprehensive sulfur analysis in diverse sample types, delivering reliable performance for industrial and environmental laboratories.
References
- ASTM-D6228 Standard Test Method for Sulfur in Natural Gas by Gas Chromatography
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