Investigation of NaDC concentration

Investigation of NaDC concentration and injection time had
shown that a higher sensitivity was obtained by using 80 mM
NaDC with 300 s injection time method. Unfortunately, the lower
separation efficiency hampered its application in complex sample
analysis. Animal origin food samples are very complex mixtures
of organic and inorganic compounds. Therefore, the 120 mM NaDC
with 240 s injection time method was chosen for the animal foodstuffs
analysis. The practical applicability of the system was demonstrated
by separating ENRO and CIP and determining their
respective contents in milk, milk powder, pork, chicken, swine liver
and swine kidney.