Anion Exchange
Condition
Apply Sample
Interference
Elution
1. Methanol
2. Water or Buffer
2 pH Units
Above
Isolate pKa
Water or Buffer
2 pH Units
Below pKa
(500mM H
2
SO
4
)
Homovanillic Acid
Analyte
Elution
Rumsby, et. al.
SAX
SAX
SAX
SAX