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.
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