Example: GC Troubleshooting Steps
An analyst observed that no peaks appeared during a GC-FID analysis. The flowchart below shows a logical progression of steps that can be used to identify the cause and correct the problem.
Please click here for the original ‘Gas Chromatography Troubleshooting Poster’.
Symptoms and Solutions
Good chromatography is critical to obtaining accurate, reproducible results. Coelutions, asymmetric peaks, baseline noise, and other other issues are common challenges in the GC laboratory. These analytical problems and others can be overcome by troubleshooting your seperations using the tips below.
Poor Resolution
Fronting / Tailing Peaks
Split Peaks
Carryover / Ghost Peaks
High Bleed
Unstable Baseline (Spiking, Noise, Drift)
Response Variation
No Peaks
Broad Peaks
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