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

D block elements, stability of cr3+ions from fe3+ions in aqueous medium

stability of cr3+ions from fe3+ions in aqueous medium

F-block elements, electronic cofiguration of f-block elements

electronic cofiguration of f-block elements

Dyes, classes of azo dyes\

classes of azo dyes\

Raising heavy weights by water pressure, Raising heavy weights by water pre...

Raising heavy weights by water pressure Get a rubber hot-water bottle. Put a one- hole stopper carrying a short glass tube tightly in the neck. Punch a hole in the bottom of a

What are distinguishing characteristics of metallic bonding, What are disti...

What are distinguishing characteristics of metallic bonding?  Metallic  state  can  be  visualized  like an  array  of positive  ions,  with  a  common  pool  of electrons to

An atom with atomic number, An atom with atomic number 20 is most likely to...

An atom with atomic number 20 is most likely to combine chemically with the atom whose atomic number is: (1) 11         (2) 14      (3) 16                 (4) 10 An

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