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

Periodic table, what are the properties of d-block elements?

what are the properties of d-block elements?

Find the number of intensive variables, Find the number of intensive variab...

Find the number of intensive variables? Consider the lime-kiln process CaCO 3 (s) → CaO (s) + CO 2 (g) Find the number of intensive variables that can be varied independen

Organic chemistry, it is impossibe to synthesise orgnic compounds in the la...

it is impossibe to synthesise orgnic compounds in the lab since life force is essential for their formation -theory is known as

Indicate the nature of bonding, Indicate the nature of bonding in CCl 4   a...

Indicate the nature of bonding in CCl 4   and  CaH 2 : (1) Covalent in Ccl 4    and electrovalent in  Cah 2 (2) Electrovalent in both CCl  and CaH 2 (3) Covalent in bot

Titrations, what is the chemical raction of a titration using sodium hydrox...

what is the chemical raction of a titration using sodium hydroxide and phenophthalein?

Simple and mixed amines - nitrogen containing compounds, Simple and Mixed A...

Simple and Mixed Amines Secondary and tertiary amines may be categorized as simple or mixed amines as per to all the alkyl or aryl groups attached to the nitrogen atom are simi

Model of nucleus, ordering in arrangement of protons and neutrons in nucle...

ordering in arrangement of protons and neutrons in nucleus

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