Alkaline Earth Metal Ions

Alkaline earth metal ions can be analyzed using IC Y-521 with a tartaric acid/ethylene-diamine eluent. Using this eluent, other divalent cations also elute and their retention times are shown on the graph by arrows. After a long use of this eluent, it will be difficult to change to a nitric acid eluent. Therefore, the use of a column exclusively for the analysis of alkali metal ions is recommended and another for alkaline earth metal ions when both type of analysises are performed routinely.


Sample : 10micro-L
1. Ni²⁺　50mg/L
2. Mg²⁺ 20mg/L
3. Mn²⁺ 50mg/L
4. Ca²⁺ 50mg/L

Column       : Shodex IC Y-521 (4.6mmID*150mm)
Eluent       : 4mM Tartaric acid + 2mM Ethylenediamine aq.
Flow rate    : 1.0mL/min
Detector     : Non-suppressed conductivity, Polarity(-)
Column temp. : 40deg-C