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Thermal Conductivity Detector (TCD) Principle

S Bharadwaj Reddy
Thermal conductivity detectors work on the principle of heat transfer by convection (gas cooling). Here, the assumption is that sample compounds will have different thermal properties than the carrier gas.

Flame Ionization Detector (FID) Principle

S Bharadwaj Reddy
Several different detector designs exist for process gas chromatographs. The two most common are the flame ionization detector (FID) and the thermal conductivity detector (TCD). Other detector types include the

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