Ex7 Atomic Absorption

Wed, 06/05/2013 - 08:44 -- sewm02

Ex7 Atomic Absorption

 

This page is for anotated references for the Atomic absorption Examination

Question 1 Diagram an atomic absorption system

Reference (Justin) Quantitative Analysis Textbook (7th ed.)pp.454-455

Annotation This has a picture that shows the parts of the AA.

Question 2 Describe and explain how a premix burner works

Reference (Justin) Quantitative Analysis Textbook (7th ed.)pp.456-457

Annotation This gives a diagram and description of how the premix burner works.

Question 3 Describe how a hollow cathode tube functions to produce very narrow line widths

Reference(Justin) Principles of Instrumental Analysis, 6th edition page 238; Quantitative Analysis Textbook (7th ed.)pp.463

Annotation The instrumental book give a better explaination of the hollow cathode tube

Reference (Joanna) Varian AA Application Notes. Hollow Cathode Lamps-Yesterday, Today, Forever.

Annotation This website gives an even better explantion of the hollow cathode tube.

Question 4 Draw the flame that is produce and label the three zones. In general is the temperature affected as you move higher in the flame (look in Skoog and Leary for this information) Why is this important

Reference(Justin) Principles of Instrumental Analysis, 6th edition pages 231

Annotation This gives a simple and a complex example of the flame and why it is important.

Question 5 Explain why control of the flame is so much more important in atomic emission than in atomic absorption

Reference Principles of Instrumental Analysis, 5th edition pages 195-196

Annotation The atomic emission spectra and atomic absorption spectra areas give an OK explaination of what is going on, but I think there are better examples some where.

Reference (Kristina) Quantitative Analysis Textbook (7th ed.)pp.461-462

Annotation This gives a much better explanation as to why flame control is so critical in atomic emission.

Question 6 What is Doppler broadening

Reference Principles of Instrumental Analysis, 5th edition pages 197-198

Annotation This gives a good explaination of what is happening.

Question 7 What is pressure broadening (you might want to look in Skoog and Leary)

Reference Principles of Instrumental Analysis, 5th edition pages 198-199

Annotation This gives a good explaination of what is happening.

Question 8 Describe how three background corrections are made for atomic absortion (skip the Zeeman effect)

Reference Principles of Instrumental Analysis, 5th edition pages 218-220

Annotation This goes through the three different corrections that are made in AA spectroscopy

Question 9List the different types of interferences that can occur in atomic absorption

Reference Principles of Instrumental Analysis, 5th edition pages 217-218

Annotation This goes through all of the different interferences that occur in AA spectroscopy