Preferred Label : relative preconcentration;
Detailed label : relative preconcentration in trace analysis;
IUPAC definition : An operation (process) as a result of which the ratio of concentration or amounts
of microcomponents and main macrocomponents increases. This is a particular example
of a separation, but at greatly differing concentrations of components. The ratio
of the masses of the initial and final samples is not of great importance. Frequently,
the main purpose of relative preconcentration is the replacement of a matrix unsuitable
for analysis by a suitable medium. In some cases, it is difficult to trace a boundary
between the absolute and the relative preconcentrations as, for example, in preconcentration
by zone melting.;
Origin ID : R05274;
See also
An operation (process) as a result of which the ratio of concentration or amounts
of microcomponents and main macrocomponents increases. This is a particular example
of a separation, but at greatly differing concentrations of components. The ratio
of the masses of the initial and final samples is not of great importance. Frequently,
the main purpose of relative preconcentration is the replacement of a matrix unsuitable
for analysis by a suitable medium. In some cases, it is difficult to trace a boundary
between the absolute and the relative preconcentrations as, for example, in preconcentration
by zone melting.
