Tap Water (2) (T-521)

Transition metal ions in tap water were analyzed using IC T-521. Fe³⁺ and Zn²⁺ are contained in tap water. HCl is added to the sample to ionize Fe to Fe³⁺ completely. (The final HCl concentration is 40mM)


Sample : Tap water
1. Fe³⁺
2. Zn²⁺

Column       : Shodex IC T-521 (4.6mm*150mm)
Eluent       : 6mM Oxalic acid + 3mM Citric acid + 0.1mM NaN3 + 0.1mM NaHSO3(pH4.1 adjusted by KOH)
Reagent      : 0.2mM *PAR + 3M NH4OH + 1M CH3COOH (Mixing coil(0.5mmID*1m))
Flow rate    : (Eluent); 1.0mL/min, (Reagent); 1.0mL/min
Detector     : VIS(530nm)
Column temp. : 40deg-C

^*PAR : 4-(2-Pyridylazo)resorcinol