Dynamic Range of Column

Monovalent and divalent cation standards were analyzed using IC YK-421. This data shows the change in dynamic range of the column with the height of the peaks. There is the linearity in the 1 to 200mg/L range for Na⁺ and K⁺ and in the 1 to 100mg/L range for Ca²⁺ and Mg²⁺.


Sample :
Ca²⁺
K⁺
Mg²⁺
Na⁺

Column       : Shodex IC YK-421 (4.6mmID*125mm)
Eluent       : 5mM Tartaric acid + 1mM Dipicolinic acid + 1.5g/L Boric acid aq.
Flow rate    : 1.0mL/min
Detector     : Non-suppressed coductivity
Column temp. : 40deg-C