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 interfacial defects, What are the Interfacial Defects  Gra...

What are the Interfacial Defects  Grain boundaries are interfaces where crystals of dissimilar orientations meet. A grain boundary is a single-phase interface, with crystals on

Inorganic chemistry, why firstly test for ammonium radicals before analysis...

why firstly test for ammonium radicals before analysis of cation radicals

Metallurgy, the method used for concentration of tin stone is

the method used for concentration of tin stone is

Explain the term hedonic rating, Hedonic Rating In this test the asses...

Hedonic Rating In this test the assessor is asked to record  the extent of liking for a product, usually by selecting a category on a "hedonic" or liking scale that runs from

Organic, Few methods preparation of cyacloalken

Few methods preparation of cyacloalken

Anamalous behaviour of lithium, why lithium is the strongest reducing agent...

why lithium is the strongest reducing agent in alkali metals

The total number of unpaired electrons & atoms of element, The total numbe...

The total number of unpaired electrons in d- orbital's of atoms of element of atomic number 29 is: (1) 10         (2) 1        (3) 0     (4)5 Ans:   0

Rutherford''s scattering experiment is related to the size, Rutherford's sc...

Rutherford's scattering experiment is related to the size of the: (1) Nucleus          (2) Atom      (3) Electron   (4) Neutron Ans: Nucleus

The electrons in the outermost orbit, Silicon has 4 electrons in the outerm...

Silicon has 4 electrons in the outermost orbit. In forming the bonds: (1) It gains electrons (2) It loses electrons (3) It shares electrons (4) None of these Ans: I

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