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 ionization energy, Q. Explain Ionization Energy? Ans. When...

Q. Explain Ionization Energy? Ans. When an electron is removed from an atom, the atom has been ionized. Therefore, the energy required to remove an electron from an atom i

Main physical properties of hydrogen sulphide, Question 1: (i) What ar...

Question 1: (i) What are the main physical properties of hydrogen sulphide? (ii) Which occupational group of workers is often exposed to hydrogen sulphide? (iii) O

#title., i just need to know if anyone that might know of a website that ha...

i just need to know if anyone that might know of a website that has the answer key to the book chemistry Prentice Hall Brief Review 2013

Series limit for balmer series of h-spectra, The series limit for Balmer se...

The series limit for Balmer series of H-spectra is: (1) 3800          (2) 4200         (3) 3646                (4) 4000 Ans:  3646

Chemical in cosmetics, Chemical in cosmetics The phrase cosmetics are t...

Chemical in cosmetics The phrase cosmetics are taken from the Greek word Kosmetikos. The meaning of this is decorating. Beautifying or enhancing complexion of skin. In middle a

S block elements in the modern periodic table, How many gaseous elements ar...

How many gaseous elements are there in the s block of modern periodic table? What are they??

Alcohols, Preparation of dihydric alcohols

Preparation of dihydric alcohols

Purification of organic compounds, Purification of organic compounds S...

Purification of organic compounds Several methods are available for the purification of substances. Though, the selection of method, depends upon the nature of substance (if s

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