Page 318 - SUBSEC October 2017_Neat

UNIT 2
MODULE 2: ANALYTICAL METHODS AND SEPARATION TECHNIQUES (cont’d)

SPECIFIC OBJECTIVES EXPLANATORY NOTES SUGGESTED PRACTICAL
ACTIVITIES

6. Infrared Spectroscopy

Students should be able to:

6.1. explain the origin of
absorption in IR
spectroscopy;

6.2. describe the basic steps Include reference to
involved in analysing preparation of solids, use of
samples by IR KBr, NaCl discs/pellets and
spectroscopy; nujol mulls.

6.3. comment on the limitations The usefulness of IR data
associated with the use of when used in conjunction
IR spectroscopy; with other data (for example
mass spectrometry).

6.4. deduce the functional Groups to be identified Use IR spectra along with
groups present in organic include: -OH, -NH 2 , absorption tables to deduce
compounds from IR spectra; the presence or absence of
C
and, C C particular bonds or
O functional groups.

CO H CONH 2
2

Use should be made of IR
spectral data. (See Table 6 in
the data booklet in Appendix
2).

6.5. cite examples of the use of CO 2 , SO 2 .
IR spectroscopy in the
monitoring of air pollutants.

7. Mass Spectroscopy

Students should be able to:

7.1. explain the basic principles Include block diagram.
of mass spectrometry; (Simple schematic diagram
of the process).

7.2. explain the significance of
the (M+1) peak in mass
spectra; and,

CXC A11/U2/17 49