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

Mass Number, What is meant by ''mass number''

What is meant by ''mass number''

Citric acid, function of citric acid in human body

function of citric acid in human body

Explain ferrites, What are ferrites? Ferrites are ceramic compounds hav...

What are ferrites? Ferrites are ceramic compounds having trivalent metal having three valence electrons iron and oxide of divalent element i.e. metals having two free electrons

Carbon and its compounds, Carbon And its Compounds Carbon is a typical ...

Carbon And its Compounds Carbon is a typical non-metal present in earth's crust to the extent of 0,02% by mass. All living organisms contain carbon and hydrogen as their ess

According to heisenberg uncertainty principle, According to heisenberg unce...

According to heisenberg uncertainty principle: (1) E=mc 2                             (2) Δ x ×  Δp ≥ h/ 4 Π  (3)γ = h/ p     (4)  Δ x ×   Δ = h / 6 Π  Norma

Oxoacids, examples of oxoacids and their definitions

examples of oxoacids and their definitions

State about the point imperfection, State about the Point imperfection ...

State about the Point imperfection They are imperfect point-like regions in the crystal. One or two atomic diameters is the typical size of a point imperfection.  A substitu

Uses of citric acid, Uses of Citric Acid It finds make use in making le...

Uses of Citric Acid It finds make use in making lemonades, like an acidulant in food and soft drinks and makes the lemon sour, like a mordant in dyeing and calico printing. Fer

Describe what you understand by elasticity, Question: (a) Explain why m...

Question: (a) Explain why metals are mostly ductile and ceramics brittle at room temperature. (b) Describe what you understand by the following terms. Use appropriate il

Calculate standard state enthalpy of the substance, Q. Calculate standard s...

Q. Calculate standard state enthalpy of the substance? Ans. To determine ΔH o f for calcium carbonate, calcium and carbon are burned in a calorimeter. Noti

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