Validation of Analytical Method
The precision of the method were better than 0.73% for
migration time (n=10) and between 0.89% and 1.04% for
relative peak area repeatabilities. Intra-day precision
showed RSDs ranging from 0.81% to 1.92% (Table 1).
For quantification purposes, analytical curves were
constructed based on peak area versus concentration.
Since much of the variance in precision is attributable
to variable injection volume, voltage, or EOF, the use of
an appropriate internal standard is required to minimize