Types of interferences - atomic absorption spectrophotometry, Chemistry

Assignment Help:

Types of interferences - Atomic absorption spectrophotometry:

Three types of interferences viz., chemical, spectral and physical interferences are encountered in AAS. These require to be suitably addressed to so as to put the technique to analytical use. A sample preparation is a crucial step in the AAS determination. Though in principle, the sample within solid, liquid or within the gas phase can be analysed through flame AAS but in practice the sample is taken in the solution form. The solution of the solids is generally prepared by wet dissolution method using a suitable acid. The presence of organic solvents of low molar mass e.g. alcohols, ethers, ketones and esters are found to enhance absorption peaks and hence increase sensitivity. A microwave digestion system (MDS) offers more rapid and efficient decomposition of complex matrices of geological and biological samples. It greatly reduces the operator time to prepare samples for analysis. More so, it could be simply automated also.


Related Discussions:- Types of interferences - atomic absorption spectrophotometry

Simple distillation - purification of organic compounds, Simple Distillatio...

Simple Distillation - Purification of organic compounds Distillation is the joint procedure of vapourisation and condensation. This method is employed for the purification o

Colloid, what are the classification of colloids ?

what are the classification of colloids ?

Standard temperature and pressure, Q.Waht are Standard Temperature and Pres...

Q.Waht are Standard Temperature and Pressure? Ans. The agreed set of conditions for comparison of gas volumes is called  standard temperature and pressure  (abbreviated

Moles, When 100ml of M/10 h2so4 is mixed with 500 ml of M/10 naoh then natu...

When 100ml of M/10 h2so4 is mixed with 500 ml of M/10 naoh then nature of resulting solution and normality of excess of reatant left is 1)Acidic,N/5 2)basic ,N/5 3)Acidic,N/20 3)ac

Equivalent mass by hydrogen displacemnt, 0.205g of a metal on treatment wit...

0.205g of a metal on treatment with dilute acid gave 106.6ml of hydrogen collected over water at 755mm pressure and 17 degree Celsius. calculate the equivalent mass of the metal. (

Combustion energies for the burning of 1 mol of propane, Measure the combus...

Measure the combustion energies for the burning of 1 mol of propane and butane gas in air under these conditions. Calculate the efficiency of the combustion process as a functi

Molecular mass and atomic mass of sulphur & atomicity, If molecular mass an...

If molecular mass and atomic mass of sulphur are 256 and 32 respectively, its atomicity is: (1) 2        (2) 8         (3 )4        ( 4)16 Ans: 8

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