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Analytical Laboratories Applications

GC with Flame Photometric Detector (GC-FPD)

Gas Chromatography – Flame Photometric Detector or GC-FPD is a technique used to analyse sulphur or phosphorous containing compounds and metals such as tin, boron, arsenic and chromium. An FPD uses a Hydrogen/Air flame into which the sample is passed. Phosphorous and sulphur containing hydrocarbons generate chemiluminescene at specific wavelengths which when passed into a photo-multiplier gives an electrical signal which can then be measured.

As common with other GC techniques, a carrier gas is required with low Water and Oxygen impurities since Water and Oxygen can interact with the stationary phase and cause significant problems such as high baseline noise and column bleed in the output gas chromatogram which both reduces the analyser sensitivity and decreases column lifetime. The FPD is extremely sensitive to Hydrocarbon impurities in the Hydrogen and Air supply for the flame. Hydrocarbon impurities can cause increased baseline noise and reduce the detector sensitivity.

A make-up gas can be used in GC-FPD at the exit of the column to increase the flow rate into the detector. The routine calibration of the analyser using a calibration mixture is common.

Our range of Experis® ultra high purity gases and patented BIP® technology offer you the optimum gas for your GC-FPD requirements. Don’t forget your choice of cylinder equipment also affects your analytical results. Our range includes high quality cylinder regulators, manifolds, valves and purge systems which will help to optimise the smooth operation and accuracy of your analysis.

The recommended gases and equipment for this application are listed below. Please note that our recommendation is based on common analytical requirements, so you may require a higher purity grade if analysing to lower concentrations or be able to use a lower purity grade if analysing to higher concentrations. If you require any additional advice on the right purity grade for your needs, please contact us.

Other Applications

Product NameDescription/BenefitsDownloads
Gases

Helium BIP® gas

Helium supplied using our patented BIP® technology with its ultra low Hydrocarbons, Sulphur and CO2 impurities is perfect for use as a carrier and makeup gas in GC-FPD to ensure accurate analyses.

Helium supplied using our patented BIP® technology with its ultra low Hydrocarbons, Sulphur and CO2 impurities is perfect for use as a carrier and makeup gas in GC-FPD to ensure accurate analyses.

Hydrogen BIP® gas

Hydrogen supplied using our patented BIP® technology with its ultra low Hydrocarbons, Sulphur and CO2 impurities is perfect for use as a carrier, makeup and detector gas in GC-FPD to ensure accurate analyses.

Hydrogen supplied using our patented BIP® technology with its ultra low Hydrocarbons, Sulphur and CO2 impurities is perfect for use as a carrier, makeup and detector gas in GC-FPD to ensure accurate analyses.

Nitrogen BIP® gas

Nitrogen supplied using our patented BIP® technology with its ultra low Hydrocarbons, Sulphur and CO2 impurities is perfect for use as a carrier gas in GC-FPD to ensure accurate analyses.

Nitrogen supplied using our patented BIP® technology with its ultra low Hydrocarbons, Sulphur and CO2 impurities is perfect for use as a carrier gas in GC-FPD to ensure accurate analyses.

Zero Air

Zero Air with its ultra low Hydrocarbons, Sulphur and CO2 impurities is perfect for use as a detector gas in GC-FPD to ensure accurate analyses.

Zero Air with its ultra low Hydrocarbons, Sulphur and CO2 impurities is perfect for use as a detector gas in GC-FPD to ensure accurate analyses.

Cylinder Regulators

Essential for reducing the gas pressure at the cylinder source, our range of high-quality cylinder regulators are available in single- or double-stage, a variety of materials such as brass, stainless steel and Monel®, and various inlet and outlet pressure ranges.

Essential for reducing the gas pressure at the cylinder source, our range of high-quality cylinder regulators are available in single- or double-stage, a variety of materials such as brass, stainless steel and Monel®, and various inlet and outlet pressure ranges.

Line Regulators

Essential for reducing the gas pressure in a pipeline, our range of high-quality line regulators are available in either brass or stainless steel, and various flowrate and outlet pressure ranges.

Essential for reducing the gas pressure in a pipeline, our range of high-quality line regulators are available in either brass or stainless steel, and various flowrate and outlet pressure ranges.

Manifolds

Essential for ensuring a batch or continuous supply, our range of high-quality manifolds can connect up to six cylinders, can provide manual or semi-automatic changeover and are available in brass or stainless steel.

Essential for ensuring a batch or continuous supply, our range of high-quality manifolds can connect up to six cylinders, can provide manual or semi-automatic changeover and are available in brass or stainless steel.

Pressure Gauges

Our high-quality, accurate pressure gauges are available in brass, stainless steel or Monel® for a wide variety of pressure ranges.

Our high-quality, accurate pressure gauges are available in brass, stainless steel or Monel® for a wide variety of pressure ranges.

Purge Systems

Purge systems are essential for eliminating impurities in and/or operator exposure to the gas when changing over cylinders. Our high-quality cross-purge, self-purge and T-purge systems are available in a variety of materials for the handling of pure, toxic, corrosive and flammable gases.

Purge systems are essential for eliminating impurities in and/or operator exposure to the gas when changing over cylinders. Our high-quality cross-purge, self-purge and T-purge systems are available in a variety of materials for the handling of pure, toxic, corrosive and flammable gases.

Valves

Our range of high-quality check valves and relief valves are available in brass or stainless steel and a variety of connection sizes for the connection of cylinders to equipment.

Our range of high-quality check valves and relief valves are available in brass or stainless steel and a variety of connection sizes for the connection of cylinders to equipment.

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