Nebulisation techniques, Chemistry

Assignment Help:

Nebulisation techniques:

The accuracy, precision and detection limits of flame AAS depend on how the analyte sample is introduced into the atomiser. We need to transfer a reproducible and representative portion of a sample into an atomiser which depends on the physical and chemical state of the analyte and the sample matrix. The sample introduction is achieved with the help of a nebuliser. The generally used nebulisation techniques are ultrasonic nebulisation, pneumatic nebulisation, electrothermal vaporisation and hydride generation.

Atomic absorption spectrophotometry (AAS) is now a routinely and widely employed technique for trace and ultratrace analysis of complex matrices of geological, biological, glass,  environmental, industrial, cement, marine sediment, pharmaceutical, engine oil or any other kind of samples. An atomic absorption techniques using flame are rapid and precise and are applicable to about 67 elements. The electrothermal methods of analysis instaed are slower and less precise; thus, these are more sensitive and require much smaller samples


Related Discussions:- Nebulisation techniques

What are the functional groups, Q. What are the Functional Groups? Ans...

Q. What are the Functional Groups? Ans. A functional group is an atom or group of atoms responsible for most of the chemical properties of a compound. The large number of

Simple distillation, n-propyl acetate evaporates rapidly when exposed to ai...

n-propyl acetate evaporates rapidly when exposed to air,but water does not.Explain

Merits of atomic fluorescence spectrometry, Merits of Atomic fluorescence s...

Merits of Atomic fluorescence spectrometry: Merits of the technique involve extremely low detection limits for favourable elements and the possibility of handling solid, liqui

Compare pot furnace and tank furnace, Q.   Compare pot furnace and tank fur...

Q.   Compare pot furnace and tank furnace used in manufacture of glass. Ans. S.NO. Pot furnace Tank furnace 1. Used f

Compound which is both doublesalt and complex compound, Examples for the co...

Examples for the compound which is both doublesalt and complex compound? Ans) A Compound that is double salt cannot be a complex compound.

Heterolysis bond fission or heterolytic, Heterolysis bond fission or Hetero...

Heterolysis bond fission or Heterolytic (i) In heterolysis bond, the covalent bond is broken in such a way that one species (that is., less electronegative) is deprived of its

Coordination compounds- hybridisation, In coordination compounds , how to d...

In coordination compounds , how to decide whether itss hybridisation will be sp3d2 or d2sp3.. itss based on inner or outer orbital complex but how will we got to know that for ever

Geometrical isomers not possible in tetrahedral complexes, Why is geometric...

Why is geometrical isomers not possible in tetrahedral complexes having two different types of unidentate ligands? Solution) Tetrahedral complexes do not show geometrical isomeri

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