Packed Column Analysis of Organic Solvent Mixture Using Nexis™ GC-2030 (FID)

Importance of the Topic

Packed column gas chromatography remains a cornerstone technique for analyzing organic solvent mixtures in industrial and research laboratories. Its high sample capacity, robustness against overload, and compatibility with flame ionization detection make it ideal for routine QA/QC, environmental monitoring, and process control applications.

Objectives and Study Overview

This article demonstrates the modification of a flame ionization detector (FID) for packed column use on the Shimadzu Nexis GC-2030 system. The goal is to evaluate separation performance for a 12-component organic solvent mixture under both isothermal and temperature‐programmed conditions, and to compare results against the legacy GC-2014 platform.

Methodology and Instrumentation

• Instrumentation: Nexis GC-2030 coupled with AOC-20i autosampler, SINJ-2030 injector module, and FID-2030 Packed Kit.
• Packed Column: SUS Porapak™ Q 80/100 (2 m × 3 mm I.D.).
• Detector Settings: FID at 280 °C; H₂ at 32 mL/min and Air at 200 mL/min (no makeup gas).
• Carrier Gas: Helium at 20 mL/min constant flow.
• Injection Conditions: Direct injection of 0.2 µL; injector at 250 °C.
• Analysis Modes: Isothermal at 75 °C; temperature program from 40 °C to 250 °C at 10 °C/min with subsequent ramp to 200 °C.
• Sample Preparation: Equal-volume mixture of 12 solvents including methanol, ethanol, acetonitrile, acetone, and tetrachloroethylene.

Key Results and Discussion

Isothermal analysis at 75 °C achieved clear baseline separation of all solvents over a 50 min run, mirroring the performance of the GC-2014. Temperature programming condensed the elution window to approximately 30 min while maintaining peak resolution and minimizing baseline drift. The digital gas control on the Nexis GC-2030 enhanced reproducibility and simplified operation compared to earlier analog systems.

Benefits and Practical Applications

• Single-column separation of complex solvent blends with high reproducibility.
• Modular FID upgrade path preserves existing SUS columns across Shimadzu GC models.
• Digital gas control reduces user intervention and helium consumption.
• Potential extension to dual‐line systems mitigates baseline drift in temperature‐programmed runs.

Future Trends and Opportunities

Advances in dual‐line packed column configurations and automated gas selectors will further improve baseline stability and resource efficiency. Integration with mass spectrometry or alternative detectors will expand trace-level analysis capabilities. Enhanced software control and data integrity features promise fully automated, high‐throughput analyses in industrial and environmental laboratories.

Conclusion

The Nexis GC-2030, when equipped with the FID-2030 Packed Kit and SUS Porapak Q column, offers robust, high-capacity separation of organic solvent mixtures. It matches the performance of legacy systems while delivering modern digital controls and simplified operation, making it an attractive upgrade for analytical facilities.