Flame Ionization Detector - Application

Application

This selectivity can be a problem or an advantage. For example, a FID is excellent for detecting methane in nitrogen, since it would respond to the methane but not to the nitrogen.

FIDs are best for detecting hydrocarbons and other easily flammable components. They are very sensitive to these components, and response tends to be linear across a wide range of concentrations.

However, an FID destroys most, if not all, of the components it is detecting. Contrarily, with a TCD the components can continue on to another detector after passing through the TCD; thus it is considered a non-destructive detector (this can be useful for analyzing complex mixtures where different detectors are needed because of differing detector selectivities). However, with an FID, most components are destroyed and no further detection is possible.

For this reason, in multiple-detector situations, the FID is almost always the last detector. An FID essentially can only detect components which can be burned. Other components may be ionized by simply passing through the FID's flame, but they tend not to create enough signal to rise above the noise of the detector.

FIDs can also be integrated into portable measurement devices and used, for example, for Landfill gas monitoring and fugitive emissions monitoring.

Read more about this topic:  Flame Ionization Detector

Famous quotes containing the word application:

    The receipt to make a speaker, and an applauded one too, is short and easy.—Take of common sense quantum sufficit, add a little application to the rules and orders of the House, throw obvious thoughts in a new light, and make up the whole with a large quantity of purity, correctness, and elegancy of style.
    Philip Dormer Stanhope, 4th Earl Chesterfield (1694–1773)

    Preaching is the expression of the moral sentiment in application to the duties of life.
    Ralph Waldo Emerson (1803–1882)

    My business is stanching blood and feeding fainting men; my post the open field between the bullet and the hospital. I sometimes discuss the application of a compress or a wisp of hay under a broken limb, but not the bearing and merits of a political movement. I make gruel—not speeches; I write letters home for wounded soldiers, not political addresses.
    Clara Barton (1821–1912)