Types of interferences - atomic absorption spectrophotometry, Chemistry

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.

Posted Date: 1/10/2013 2:48:02 AM | Location : United States

Related Discussions:- Types of interferences - atomic absorption spectrophotometry, Assignment Help, Ask Question on Types of interferences - atomic absorption spectrophotometry, Get Answer, Expert's Help, Types of interferences - atomic absorption spectrophotometry Discussions

Write discussion on Types of interferences - atomic absorption spectrophotometry
Your posts are moderated
Related Questions
(a) Discuss, with the aid of diagrams, and with suitable examples, the chemistry (including half-cell reactions), construction and principles of the following electrode types: (

Q. Show the chemical of Boron and aluminium? Boron and aluminium when heated with nitrogen torn the nitrides BN and AIN Nitrides of Ga and in are formed by heating the elements

Al is used as reducing agent for the extraction of metals such as Chromium,Monganes.Explain why? Solution) Al3+ + 3 e- Al Good reducing agents like aluminum have relatively

Q.   A sample of water analysis was found to contain temporary magnesium hardness 25 mg/L. Permanent magnesium chloride hardness 15 mg/L and permanent calcium sulphate hardness 20

what are the advantages of stripping methods over voltammetric procedures?

The atomic orbitals are progressively filled in order of increasing energy. This principle is called as: (1) Hund's rule (2)Aufbau principle (3) Exclusion principle (4

Determine the density of cesium chloride which crystallises in bcc type structure with the edge length 412.1 pm.The atomic masses of Cs & Cl are 133 & 35.5 respectively.   Solution

How sodium carbonate can increase surface area of a catalyst

Write a reaction for which the enthalpy change will be (delta H) for solid aluminum oxide.