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 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.
Which method is used to find out the concentration of unknown sample in flame photometry?
The aim of the experiment is to determine concentration of potassium ion using Flame Photometry (atomic emission spectrometry). Flame photometry is also known as atomic emission spectrometry.
What is a flame thermionic detector?
Flame Thermionic Detectors (FTD) The FTD is a selective, high-sensitivity detector for organic nitrogen compounds and inorganic and organic phosphorus compounds. (The selectivity of the FTD for phosphorus compounds is not as good as the FPD.) The FTD does not react to inorganic nitrogen compounds.
What are the detectors used 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.
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 type of detector is used for flame photometer?
Which element Cannot detect and estimate by flame photometric technique?
The information about the molecular structure of the compound present in the sample solution cannot be determined. The elements such as carbon, hydrogen and halides cannot be detected due to its non radiating nature.
What is the difference between AAS and flame photometer?
The main difference between flame photometry and atomic absorption is that in flame photometry the radiation emitted from the flame is measured, and in atomic absorption the decrease in the intensity of the radiation from thehollow cathode due to the absorption by the atoms in the flame is measured.
What is difference between FID and TCD detector?
the basic principle of FiD is the ionization of organic compound by burning the compounds in the hydrogen air flame. Meanwhile, the detection of compound by tcD is based on the difference of thermal conductivity properties between the carrier gas and the target being detected.
What is the job of a flame photometric detector?
The determination of sulfur or phosphorus containing compounds is the job of the flame photometric detector (FPD). This device uses the chemiluminescent reactions of these compounds in a hydrogen/air flame as a source of analytical information that is relatively specific for substances containing these two kinds of atoms.
How is the light emitted by a Flame measured?
Detect the emitted light and measure the intensity of radiation emitted by the flame. That is, the emitted radiation is converted to an electrical signal with the help of photo detector. The produced electrical signals are directly proportional to the intensity of light.
What are the qualitative applications of flame photometry?
Flame photometer has both quantitative and qualitative applications. Flame photometer with monochromators emits radiations of characteristic wavelengths which help to detect the presence of a particular metal in the sample. This help to determine the availability of alkali and alkaline earth metals which are critical for soil cultivation.
How are metals dissociated in flame photometry?
The basis of flame photometric working is that, the species of alkali metals (Group 1) and alkaline earth metals (Group II) metals are dissociated due to the thermal energy provided by the flame source. Due to this thermal excitation, some of the atoms are excited to a higher energy level where they are not stable.