How does a flame photometric detector work?
Flame Photometry works by measuring the intensity of light emitted (measured using a wavelength of a colour) when the element is exposed to a Flame. Flame Photometer Components: There are four basic components to a Flame Photometer – a flame, nebulizer and mixing chamber, colour filters, and a photo detector.
What is detector in flame photometry?
The flame photometric detector (FPD) allows sensitive and selective measurements of volatile sulphur and phosphorus compounds. The detection principle is the formation of excited sulphur (S2*) and excited hydrogen phosphorous oxide species (HPO*) in a reducing flame.
What is dynamic range of flame photometric?
Flame Photometric detector Linear dynamic ranges from \(10^3\) for S to \(10^4\) for P. It is useful for analysis of organophosphorus pesticides, sulphurf in petroleum products and pulp milling process studies.
Is used as a detector in flame photometry?
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.
Which gas is used in flame photometer?
Flame photometry employs a variety of fuels mainly air, oxygen or nitrous oxide (N2O) as oxidant. The temperature of the flame depends on fuel-oxidant ratio.
What is the purpose of flame photometer?
Flame photometer is an analytical instrument used in clinical laboratories for determining of sodium, potassium, lithium and calcium ions in body fluids.
What does a detector do in a spectrometer?
A detector converts light into a proportional electrical signal which in turn provides the response of the spectrophotometer. The human eye serves as a sensitive detector for colour changes and was used effectively in colour matching colorimetric instruments.
Which detector is not used in flame photometer?
Which of the following is not a detector used in Flame emission photometers? Explanation: Detectors used in Flame emission photometers are Photovoltaic cell and photo emissive tubes. Photovoltaic cell is also known as photronic cell.
Which GC detector has the most sensitivity?
Electron capture detector, (ECD). The most sensitive detector known. Allows for the detection of organic molecules containing halogen, nitro groups etc.
How do you calibrate a flame photometer?
1.1 Preparation of Potassium dichromate solution. 1.2 Dry Potassium dichromate at 130°C for 2 hours. Weigh accurately about 60mg of potassium dichromate into 1000ml volumetric flask. Add 0.005 M sulfuric acid to dissolve and dilute with same solvent.
Why it is called flame photometer?
They named this instrument as Flame photometer. The principle of flame photometer is based on the measurement of the emitted light intensity when a metal is introduced into the flame. Flame photometry is one of the branches of atomic absorption spectroscopy. It is also known as flame emission spectroscopy.