flame ionizations การใช้

• In 1959, Perkin Elmer Corp . included a flame ionization detector in its Vapor Fractometer
• It maintains a laboratory equipped with sophisticated instruments like gas chromatographs, infrared emission pyrometers and flame ionization detectors.
• The most commonly used detectors are the flame ionization detector ( FID ) and the thermal conductivity detector ( TCD ).
• Instantaneous monitoring consists of walking over the surface of the landfill, while carrying a flame ionization detector ( FID ).
• The GC is coupled with either a mass spectrometer detector ( MSD ) or a flame ionization detector ( FID ).
• The separated gases are detected by thermal conductivity detector for atmospheric gases, by flame ionization detector for hydrocarbons and oxides of carbon.
• The retention time of the probe molecule is then measured by traditional GC detectors ( i . e . flame ionization detector or thermal conductivity detector ).
• The molecules are typically extracted in a solvent, then separated in a gas chromatograph, and finally determined with a suitable detector, such as a flame ionization detector or a mass spectrometer.
• Since the TCD is less sensitive than the flame ionization detector and has a larger dead volume it will not provide as good resolution as the FID . The TCD is not as sensitive as other detectors but it is non-specific and non-destructive.
• The thermal conductivity detector, described in 1954 by N . H . Ray, was the foundation for several other methods : the flame ionization detector was described by J . Harley, W . Nel, and V . Pretorius in 1958, and James Lovelock introduced the electron capture detector that year as well.