1. 7 Classifications
GENERAL
CLASSIFICATIONS
OF ANALYTICAL
CHEMISTRY
AccordIng to relatIve
proportion of analytes
Fig. 1.19. Typical classifications of Analytical Chemistry
r - S - - - :- - - ,
epa ratIon I
methods
I
7-- - ---Instrumental
analysis
According to nature
of samplel analyte
29
• Structural analysis, as implied by its name, aims to elucidate (bio )chemical
structures. The information it produces can pertain to an individual analyte
(a pure compound such as a protein) or a whole sample (e.g. the spatial
distribution of its components).
Qualitative Analysis identifies a property of the analyte (or its reaction product),
Quantitative Analysis measures it in numerical units and Structural Analysis
interprets it. As can be seen in Fig. 1.20, the three concepts can be related to one
Fig. 1.20. Scope hierarchy
for the three types of analysis according to purpose
Structural analysis
Quantitative analysis
Qual itative analysis