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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 (4.6mmI.D. x 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. : 40°C