FID
Definition
Flame ionisation detector. A hydrogen-air flame ionises C-H bond containing analytes and a collector electrode reads the ion current. Near-universal for organic compounds with a linear range above 10^7 and detection limits in the picogram range.
- Full name
- Flame Ionization Detector
- Detection range
- Linear above 10^7
- Detection limit
- Picogram range
- Analyte requirement
- Contains C-H bonds
Common questions
What compounds can FID detect?+
FID detects organic compounds that contain C-H bonds, making it near-universal for hydrocarbons and most organic molecules. It works in gas chromatography columns and ionizes the analytes in a hydrogen-air flame.
How sensitive is FID and what is its detection limit?+
FID is highly sensitive with a linear range above 10^7 and can detect analytes down to the picogram range. This makes it one of the most sensitive detectors available for organic compound analysis.
What happens to the sample in FID analysis?+
FID is a destructive detection method, meaning the sample is burned in the hydrogen-air flame during measurement. The ions created are collected by an electrode, which reads the ion current to identify and quantify the compounds.
Related terms
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Explained in these topics
- Chromatographic Techniques in Forensic Science: TLC, GLC, HPLC and HPTLCFlame Ionisation Detector. GLC detector for organic compounds with C-H bonds. High sensitivity, near-universal for hydrocarbons, destructive.
- Gas-Liquid Chromatography (GLC): Columns, Carriers and DetectorsFlame ionisation detector. A hydrogen-air flame ionises C-H bond containing analytes and a collector electrode reads the ion current. Near-universal for organi...