Atomic spectroscopy, Chemistry

Assignment Help:

Atomic spectroscopy:

Atomic spectroscopy is the oldest instrumental method of elemental analysis. The origin of these methods dates back to the times of Bunsen and Kirchhoff in the mid- 19th century whereas they showed in which the optical radiation emitted from flames is features of the elements present in the flame and the intensities of the emitted radiation were dependent on the amount of elemental species present.

The atomic spectroscopic techniques are based on the transitions amongst the quantised electronic energy stages caused through the absorption of radiation through the atoms within vapour phase or by the emission of radiation by the excited atoms. Since the transitions manifest in terms of absorption, emission or fluorescence emission. Therefore, we have atomic emission, absorption and fluorescence spectroscopies. The kind of atomic spectroscopic method is determined both through the method of atomisation as well as the nature of the analyte radiation interaction. In compare to the molecular spectra, the atomic spectra consist of a number of sharp absorption lines, features of the atomic species. The signals within an atomic spectrum are also characterized in terms of the position, intensity and the band width.

Flame photometry is a technique for the determination of elements that could be simply excited and is based upon the measurement of intensity of radiation emitted, within the visible region, while a metal is introduced into a flame. A wavelength of the emitted radiation, tells us what the element is or the intensity of the radiation tells us how much of the element is present. A sensitivity of the flame photometric techniques depends on the number of excited atoms that in turn depends on the flame temperature. A flame temperature is a function of the kind of fuel and oxidant used.


Related Discussions:- Atomic spectroscopy

Explain product specification of mustard, Mustard Although the primary...

Mustard Although the primary use of mustard seeds is a condiments, important new food applications are regularly being found. Commercially available mustard products include m

Chemical kinetics, Distinguish between van''t Hoff Method and Oswald Isolat...

Distinguish between van''t Hoff Method and Oswald Isolation Method. In each case give an expression for the rate of reaction.

Buffers , does adding hcl to acetic acid and sodium acetate = more acid con...

does adding hcl to acetic acid and sodium acetate = more acid consumption r spodium consupmtion?>

Halides of boron and aluminium, Q. Halides of Boron and Aluminium? All ...

Q. Halides of Boron and Aluminium? All the elements of Group 13 form binary halides. All the four trihalides of each element are known, with one exception. The compound Tl13 is

What is gamma radiation, Q. What is gamma radiation? The third kind of ...

Q. What is gamma radiation? The third kind of radiation is gamma radiation (g-radiation) which is high-energy electromagnetic radiation. Gamma radiation is typically emitted

Gas laws, molecular chlorine and molecular fluorine combine to form a gaseo...

molecular chlorine and molecular fluorine combine to form a gaseous product.Under the same conditions of temperature and pressure it is found that one volume of Cl2 reacts with thr

Write Your Message!

Captcha
Free Assignment Quote

Assured A++ Grade

Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!

All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd