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High Sensitive Detection of Cations

Monovalent and divalent cation standards were analyzed using IC YK-421. Using a highly sensitive conductivity detector, cations whose concentrations are μg/L(=ppb) level can be detected. Minimum detection levels are shown in the table(S/N=3). The figures in parentheses are minimum concentrations when 100 μL of sample is injected.

Sample
Minimum detection levels (S/N=3)
1. Li+

-

-

2. Na+ 0.15ng
(1.5 μg/L)
3. NH4+ 0.30ng
( 3 μg/L)
4. K+ 0.60ng
( 6 μg/L)
5. Ca2+ 0.20ng
( 2 μg/L)
6. Mg2+ 0.20ng
( 2 μg/L)
( ) : minimum concentrations when 100 μL of sample is injected.