0
What is the difference between flame photometer and atomic absorption spectrometer?
A spectrometer is a general term for an optical instrument. Spectrometric methods convey a large group of analytical methods based on molecular or atomic spectroscopy. Spectroscopic instruments will typically contain a stable source of radiant energy, a transparent veil for the sample or blank, a component to separate different wavelengths of light, a detector, and a readout/processor.
Photometers are simpler in design compared to spectrophotometers. They are less expensive, more convenient, easier to maintain, and good for field work. Some photometers include: visible photometers, probe-type photometers, and general purpose photometers using adjustable filters.
Spectrophotometers may have a few more mirrors, slits, a grating, and maybe a filter to top if off. Some examples include the popular Spectronic 20, Varian Cary 100, or even miniature fiber-optic spectrometers.
A flame photometer measures the intensity of light emitted by excited atoms in a flame to determine the concentration of specific elements in a sample. An atomic absorption spectrometer measures the absorption of light by neutral atoms in a sample to quantify the concentration of specific elements. The main difference is in the method of detection: emission for flame photometry and absorption for atomic absorption spectrometry.
A photometer simply measure the total lumens of a light source, while a spectrophotometer will measure a whole spectral of that same light source. Hence a spectrophotometer will give us more details about how the light is acting on the spectral band.
In atomic absorption spectroscopy we deal with atoms at ground stage, these atoms absorb a characteristic wavelength of radiations coming from the source which is commonly a hollow cat-hod lamp. It requires high energy and the resonance line is below 300nm.
flame emission spectroscopy deals with atoms at excited state, atoms are first excited by absorbing characteristic light from the source which must be a flame, then atoms fall back to ground state losing same wavelength. low energy is favourable and resonance line is above 300nm.
The UV/Vis passes light through the sample, measuring the light the sample absorbs; the AA aspirates the sample by exciting the molecules at a specific wavelength that allows you to measure only the ion you want! Basically the UV/Vis measures the sample as a whole and passes light through it; your sample is still available. The AA uses your sample to make the measurement, but is more selective to what you want to be measured within the sample ( can be used with contaminants present).
flame photometry is a type of atomic EMISSION spectroscopy. The sample is excited (raised to a high temperature), causing the emission of light. the wavelength of the emitted light is a function of the energy of the excited electrons, so each element has a characteristic set of wavelengths. usually a single wavelength is detected and the intensity of the emission is used to calculate concentration.
Atomic adsorption works in the reverse way. A light of a standard wavelength (a wavelength characteristic of the target element) is passed through a flame containing the unknown substance, and the concentration of the target element is determined by the reduction in the energy of this light as it passes through the flame. the light is adsorbed by the electrons in the target element, kicking them into a higher orbit or completely out of the atom, depending on the energy involved.
basically, one method involves the emission of the energy as an excited electron kicks back down to a lower state, and the other involves the adsorption of energy as an electron is kicked up an energy state. Same basic principle-change in electron energy relates to light of a specified wavelength and the change in the amount of that light can be measured and converted to a concentration.
flame photometer emit energe can measure and atomic absorption can mear absorberd energy and in flame photometr flame use as a soure and in atomic absorption hallow cathode lamp used as a source
Add your answer:
Earn +20 pts
What is the difference between a colorimeter and flame photometer?
A colorimeter is a scientific instrument that measures the intensity of light passing through a pure sample. In biology, colorimeters are used to monitor the growth of cultures. As the culture grows, the growing medium becomes more cloudy and absorbs more light.
What is the difference between an electroscope and a spectroscope?
A spectrophotometer consists of two instruments, namely a spectrometer for producing light of any selected color (wavelength), and a photometer for measuring the intensity of light. For solutions where intensity of light is proportional to the concentration, we use spectrophotometer.
Is there any relationship between sound frequency and sound absorption?
Yes - the amount of absorption can depend on the frequency.
One difference between algae and plants is that?
Algae lack specialized tissues like roots, stems, and leaves that are present in plants. Instead, algae have simple structures for attachment and nutrient absorption.
What is resonance line of atomic absorption spectroscopy?
The resonance line in atomic absorption spectroscopy refers to the specific wavelength of light that matches the energy difference between the ground state and an excited state of an atom. When the atom absorbs light at this resonance wavelength, it undergoes a transition to an excited state, allowing for the identification and quantification of the element present in the sample.
What is the difference between photometer and spectrometer?
A photometer measures light intensity or brightness, typically used for determining the amount of light emitted or absorbed by a sample. A spectrometer measures the intensity of light at different wavelengths, providing information on the composition of a sample based on its interactions with light. Essentially, a photometer measures light intensity, while a spectrometer analyzes the properties of light in terms of its wavelength distribution.
What is the difference between Aston's mass spectrograph and Dempster's mass spectrometer?
Aston's mass spectrograph is a magnetic sector mass spectrometer that separates ions based on their mass-to-charge ratio using magnetic and electric fields. Dempster's mass spectrometer is an early design of a mass spectrometer that used electric and magnetic fields to separate ions based on their mass-to-charge ratio. Aston's design was an improvement over Dempster's, offering higher resolution and precision in analyzing isotopic composition.
What are the difference between actual position and apparent position of the stick?
duhhh
What is the difference between absorption costing and active base costing?
there is have some differeance . 1.
Difference between absorption costing AND target costing?
Target costing is when you have a goal for the project and its costs. Absorption costing is when you need to fix the excess spending.
What is the difference between a colorimeter and flame photometer?
A colorimeter is a scientific instrument that measures the intensity of light passing through a pure sample. In biology, colorimeters are used to monitor the growth of cultures. As the culture grows, the growing medium becomes more cloudy and absorbs more light.
What is the difference between assimilation and absorption?
Absorption is where nutrients are moved from the lumen in to the bloodstream or the lymph. here they are transported to tissues where they are assimilated :used for energy, growth etc
What is the vernier constant of spectrometer?
The vernier constant of a spectrometer is the smallest division on the scale that can be read. It is used to determine the angular separation between spectral lines.
What is the difference between spectrophotometer and fluorimeter?
A spectrometer shoots light through a sample and detects absorbance while a fluorimeter detects the intensity of fluorescence of a given sample.
What is difference between spectrophotometer and spectometer?
A spectrophotometer measures the amount of light absorbed or transmitted by a sample at different wavelengths, often used for quantifying concentration of substances. A spectrometer, on the other hand, measures the intensity of light at different wavelengths, often used for qualitative analysis of substances present in a sample. In summary, a spectrophotometer is a type of spectrometer that focuses on measuring light absorption or transmission for quantitative analysis.
What is the difference between absorption and adsorbtion?
its just a matter of spelling. the "b" is for British English and "p" is used in American English
What is the difference between Aston's mass spectrometer and Dumpsters mass spectrometer?
Aston's mass spectrometer was developed by Francis William Aston in 1919 and used a magnetic field to separate ions based on their mass-to-charge ratio, providing a more accurate measurement of atomic weights. On the other hand, "Dumpster's mass spectrometer" does not refer to a specific instrument or technique in the field of mass spectrometry; it seems to be a typographical error or confusion.
