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Detectors, Chromatography, Gas

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. These devices detect and measure the mobile phase (a gas) and/or the characteristics of the sample constituents, the type of GC detector used is highly dependent on the application of the GC system. The detector types commonly found in the clinical laboratory are: (1) Thermal conductivity detectors (TCD) which determine the change in thermal conductivity of the carrier gas caused by the sample components; (2) flame ionization detectors, which employ a flame to ionize the sample gas which is attracted to electrodes to produce a change in electrical current that is amplified and used to assess the quantity of each sample component. Additionally, liquid chromatography systems are often combined with and work together with mass spectrometers as detectors. There is a great variety of other detectors that are used with GC systems, including electron capture detectors (ECDs), nitrogen-phosphorus detectors (NPDs), and photoionization detectors (PIDs), The GC system can be configured to use one detector or to pass the sample through a series of detectors, provided that if one of the detectors is destructive to the sample it will be set up as the last in the series. Gas chromatography detectors are mainly used in clinical laboratories as a component of chromatography systems intended to assess ionized organic samples such as amphetamines, barbiturates, and steroids; halogenated gases such as chlorine and fluorine, and many other organic samples.

Entry Terms : "Electron Capture Detectors" , "Gas Chromatography Detectors"

UMDC code : 33814

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1-4 of 4 Match(es).

Bruker Daltonics Inc

Company Type: Parent

Right from the beginning, which is now more than fifty years ago, Bruker has been driven by a single idea: to provide the best technological solution for each analytical task. Today, worldwide more than 5400 employees are working on this permanent challenge at over 90 locations on all continents. Bruker systems cover a broad spectrum of applications in all fields of research and development and are used in all industrial production processes for the purpose of ensuring quality and process reliability.

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

1-4 of 4 Match(es).

 

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