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

Explain asymmetric molecule, Explain the following terms: (a) Asymmetric...

Explain the following terms: (a) Asymmetric molecule (b) R and S notations

Limited reactant, How many grams of water can be produced when 11.7 moles o...

How many grams of water can be produced when 11.7 moles of ethane (C2H6) react with excess oxygen gas? Unbalanced equation: C2H6 + O2 ? CO2 + H2O Show, or explain, all of your w

Analytical, effeciency of plate of chromotography

effeciency of plate of chromotography

, calculate the ratio of the fundamental frequency of HI and D

calculate the ratio of the fundamental frequency of HI and DI

Outlet temperature of the reactor, Ammonia is oxidised with air to form nit...

Ammonia is oxidised with air to form nitric oxide in the first step to produce nitric acid.  The reaction occurs in a well insulated continuous reactor based on the stoichiometry:

Determine bohr''s orbit of hydrogen atom, The radius of which of the follow...

The radius of which of the following orbit is same as that of the first Bohr's orbit of hydrogen atom: (1) He + (n= 2)                    (2) Li 2+ ( n= 2)     (3) Li 2

Safety in preparation of preparation of trimethyl, Safety in Preparation of...

Safety in Preparation of Preparation of trimethyl: 1 Use a round-bottomed flask equipped with a Claisen head (lagged with glass-wool), Quickfit thermometer (very expensive!)

Mixture analysis, why HNO3 is not used for detection of acidic radicals of ...

why HNO3 is not used for detection of acidic radicals of 1st and 2nd group?

why -x are called deactivating o&p groups? , It can be because these group...

It can be because these group tend to decrease the electron density when attached to a benzene or other ring structure preferentially at ortho and pera position.

Acid halide, what are the chemical propertiies of acid halide?

what are the chemical propertiies of acid halide?

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