Anion standards were analyzed using IC SI-91 4C (a column for oxyhalides analysis).
Sample : 20micro-L
F–
ClO2–
BrO3–
Cl–
NO2–
Br–
ClO3–
NO3–
PO43-
SO42-
Column : Shodex IC SI-91 4C (4.0mmID*100mm)
Eluent : 1.8mM Na2CO3 + 1.7mM NaHCO3 aq.
Flow rate : 1.0mL/min
Detector : Suppressed conductivity