Gas Chromatography Flame Ionization Detector (GC-FID) Test Laboratory

Chemical Tests

Gas Chromatography Flame Ionization Detector (GC-FID) Test Laboratory

Flame ionization detection (FID, flame ionization detection) is the most widely used gas chromatography (GC, gas chromatography) detection method. Flame ionization detectors respond to a wide variety of hydrocarbons and have a wide dynamic range. Ionization detection methods include electron capture, photoionization, and thermionic detection. Ionization detectors interact with solutes separated from gas chromatography columns to produce a current that varies in proportion to the amount of solute present.

Gas Chromatography Flame Ionization Detector (GC-FID) Test Laboratory

The flame ionization detection method is sensitive to molecules ionizing in the hydrogen-air flame, including most of the carbon-containing compounds. Other detectors rely on matter-specific ionization systems and only respond to certain heteroatoms such as halogens, nitrogen or sulfur for electron capture detection. Although these detectors share a few properties, their applications differ significantly. Detector performance characteristics, such as sensitivity, minimum detectable amount, linearity and selectivity, are greatly affected by the type of ionization system, internal electrode arrangement and electronics.

In general, flame ionization detection (FID) sensitivity depends on combustion gas flow rates, carrier gas flow rate, flame jet outlet diameter, relative positions of jet and collector, and to some extent detector temperature.

The flame ionization detector is a scientific tool that measures analytes in a gas stream. It is often used as a detector in gas chromatography. The measurement of ions per unit time makes this a mass sensitive instrument. Standalone flame ionization detectors are also used in applications such as waste gas monitoring, fugitive emission monitoring and internal combustion engine emission measurement in fixed or portable devices.

Flame ionization detectors are very widely used in gas chromatography with a number of advantages. Its main advantages are cost, low maintenance requirements, robust construction, and linearity and detection ranges. However, flame ionization detectors cannot detect inorganic substances. It can detect some highly oxygenated or functionalized species such as infrared and laser technology. One disadvantage is that the flame oxidizes all oxidizable compounds that pass through it.

Flame ionization detectors have a very wide dynamic range and high sensitivity to all carbon-containing materials. These detectors are the most common detectors paired with gas chromatography devices for analytical applications.

Flame ionization detectors use a flame to ionize carbon-containing organic compounds. After separation of the sample in a gas chromatography column, each analyte passes through a flame fed with hydrogen and zero air, which ionizes carbon atoms. The ions are then collected and measured while creating a current in the detector's electrodes. Current is generated as the detector collects charged ions. The current is then converted into an electrical signal. An inert make-up gas is often used to provide additional gas flow to the sample ions as they pass through the detector. It is important that the gas used is inert and contains minimal impurities that interfere with sample analysis, leading to the risk of signal attenuation. Helium is often used for make-up gas, but nitrogen is a more cost-effective option.

Meanwhile, using a gas generator for gas chromatography flame ionization detector analysis adds convenience and reliability to the laboratory. In addition, laboratories that perform analyzes where more than one gas source is required save the trouble of coordinating gas cylinder orders to ensure that gas supply does not end in the middle of analysis. Because in these generators, gas is produced on demand to meet the needs without the need to store large volumes of high pressure gases.

To summarize, the flame ionization detector (FID) is one of the most used detectors for gas chromatography. Its application area is quite wide. For example, gasoline, kerosene for aircraft are carefully analyzed with flame ionization detector as a routine control. The composition of kerosines is of great importance for energy conversion. A completely different use of this technique is in the packaging of foodstuffs. The hamburger is supplied in an insulating polystyrene box. During the processing of polystyrene, different hydrocarbons are added to form the final product. When polystyrene is used in the food industry, hydrocarbon residues affect the quality of the food and are harmful to health. It is very important to analyze with this person.

Our organization provides gas chromatography flame ionization detector (GC-FID) test laboratory services to demanding enterprises within the framework of national and international standards, with a trained and expert staff and advanced technological equipment, among numerous testing, measurement, analysis and evaluation studies.

Get Offer Now

To get an appointment, to get more detailed information or to request an evaluation, you can ask us to fill in our form and reach you.

Whatsapp