What is the working principle of flame photometer?
What is the working principle of flame photometer?
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 the necessary condition for flame photometry?
Its origins date back to Bunsen’s flame-color tests for the qualitative identification of select metallic elements. Flame photometry is good only for elements that are easily excited and do not require very high temperatures (Na, K, Li, Ca are the most widely determined atoms by this technique).
Which is not interference of flame photometer?
The tube used (green-stoppered tube) contains a minuscule concentration of lithium and sodium, which does not interfere with plasma sodium or osmolality measurements.
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 are the applications of flame photometer?
APPLICATION :- To estimate sodium, potassium, calcium, lithium etc. level in sample of serum, urine, CSF and other body fluids. Flame photometry is useful for the determination of alkali and alkaline earth metals. Used in determination of lead in petrol.
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 are the components of flame spectroscopy?
These processes include: (1) excitation and emission of radiation by MX(g) molecules, (2) reaction of M(g) atoms with flame components at high temperatures to produce molecules and ions that also absorb and emit radiation, and (3) formation of M+x ions, which, in addition to reducing the efficiency of free-atom …
Which source is used in flame photometer?
Which metal is used in sensitive flame method?
A photoelectric flame photometer is a device used in inorganic chemical analysis to determine the concentration of certain metal ions, among them sodium, potassium, lithium, and calcium. Group 1 and Group 2 metals are quite sensitive to Flame Photometry due to their low excitation energies.
Which of the following is advantage of flame photometer?
One more advantage of laminar flow burner is that it allows steady movement of gas flow. Explanation: Laminar flow burner used in Flame photometers is also known as Premix burner. Sample, fuel and oxidant are mixed thoroughly before reaching the burner. 8.
Which detector is used in flame photometer?
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 the unit of flame photometer?
What is the principle of the flame photometer?
The working principle of the flame-photometer is simple. The liquid is sprayed with a non-shiny flame in the form of a fine mist that is colored according to the characteristic emissions of the elements, e.g. Sodium (Na), Potassium (K), Calcium (Ca), and Lithium (Li).
How are monochromators used in flame photometry?
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.
What are the disadvantages of flame photometry in chemistry?
Moreover the flame photometer has a wide range of applications in the analytical chemistry, it possess many disadvantages which are explained below: The concentration of the metal ion in the solution cannot be measured accurately..
How is flame photometry used in atomic absorption spectroscopy?
Flame photometry is one of the branches of atomic absorption spectroscopy. It is also known as flame emission spectroscopy. Currently, it has become a necessary tool in the field of analytical chemistry. Flame photometer can be used to determine the concentration of certain metal ions like sodium, potassium, lithium, calcium and cesium etc.
What is the working principle of flame photometer? 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…