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AQA GCSE CHEMISTRY
C3 5.4 Instrumental Analysis 1
1. Modern instrumental methods of chemical analysis depend on
electronics. They are used widely in areas including industry and
2. The main advantages of using instrumental analysis compared to
traditional practical methods are that; they are highly accurate, they
are quicker and, they enable very small quantities of chemicals to be
analysed. The main disadvantages of using them are that the
equipment is; usually very expensive, takes special training to use it
and gives results that can often be interpreted by comparison with
already available know specimens.
3. Advances in technology are linked to developments in methods of
instrumental analysis as we have been able to develop machines
which can carry out the analysis and new methods of analysing
substances have been developed.
4. Two methods used to identify elements are Atomic Absorption
Spectrometry (AAS) and mass spectrometry. Atomic Absorption
Spectrometry (AAS) is a technique used to measure the concentration
of a particular metal in a liquid sample and mass spectrometry is used
to measure the mass of atoms.