flame ionization detector


flame ionization detector
(FID)
   A nearly universal gas chromatographic detector. It responds to almost all organic compound. An FID does not respond to nitrogen, hydrogen, helium, oxygen, carbon monoxide or water. This detector ionizes compounds as they reach the end of the chromatographic column by burning them in a air/hydrogen flame. As the compounds pass through the flame, the conductivity of the flame changes, generating a signal. This is the most commonly used detector in arson debris analysis.

Forensic science glossary. . 2012.

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