GC detectors can find the identity and concentration of analytes. Selective, non-selective and specific are the nature of GC detectors. Non-selective detectors react to all components present in a carrier gas; selective detectors have a response to a variety of compounds with the same chemical characteristics and specific detectors are the response to a specific compound. Flame ionization detector (FID) and thermal conductivity detector (TCD) are the most widely used detectors, both sensitive to a wide range of components, FID is highly sensitive and robust than TCD. FID does not react to inorganic gases and TCD is a response. to inorganic gases such as N2, CO, NH3, CO2, CS2, etc.
There are a large number of detectors used for gas chromatography, check it out.
- Flame ionization detector: (FID)
- Thermal conductivity detector: (TCD)
- Nitrogen and phosphorus detector: (NPD)
- Photoionization detector: (PID)
- Electron Capture Detector: (ECD)
- Photometric Flame Detector: (FPD)
- Electrolytic Conductivity Detector: (ECD)
- Mass spectrometer: (MS)
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