analysis. Further study showed that injection time of 240 s was
more suitable for highly complex matrices analysis. According to
these facts, validation parameters have been designated and
applied in this paper for both methods (80 mM with 300 s and
120 mM with 240 s).
Under the optimal conditions, the ENRO and CIP analysis by
CE-UV using the FASS–sweeping technique was validated in terms
of its linearity, repeatability, and LOD. The results were summa-
rized in Table 1. Standard calibration curves were prepared by
the injection of mixed-standard solutions at seven concentration