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Detectors, Chromatography, Gas, Flame-Ionization

Definition : Chromatography detectors designed to assess the individual molecules that come out (i.e., elute) from the chromatography column of a gas chromatography (GC) system by using a combined hydrogen/air flame that breaks down the molecules and produces ions (i.e., a flame ionization detector [FID]). FIDs consist of a chamber including the ionizing flame, a collector assembly plate with electrodes that collect the ions and provide an output electrical signal that is sent to a computerized system. The system, including appropriate software, can display a chromatogram showing the constituents of the sample with an amplitude proportional to the quantity in the sample. FIDs work only for organic/hydrocarbon containing compounds due to the ability of the carbons to form cations and electrons upon pyrolysis which generates a current between the electrodes; these detectors destroy the sample while measuring, they should be used as the last component when using a series of GC detectors. The devices may be also used as organic environmental gas detectors.

Entry Terms : "Flame-Ionization Gas Chromatography Detectors"

UMDC code : 33816

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Buck Scientific Inc

Company Type: Parent

Buck Scientific, Inc. has more than 10,000 satisfied instrument users in over 40 countries. We support a wide variety of customers in the industrial, environmental, quality control, mining, plating, and educational markets. Our engineers and chemists are continuously developing new applications to serve particular needs. Please call us Toll-Free 800-562-5566 to find out how we can provide help for your specific requirements.

Cole-Parmer Instrument Co

Company Type: Parent

Cole-Parmer has been a leading global source of laboratory and industrial fluid handling products, instrumentation, equipment, and supplies. We are proven experts in the fields of temperature measurement and control, electrochemistry, and fluid handling. Our products are sold throughout the world through company-owned customer channel outlets and a strong network of international dealers.

SRI Instruments

Company Type: Parent

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