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: 100 µL
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| No. | Cations | Minimum detection levels (S/N=3) | Minimum concentrations (when 100 μL of sample is injected) |
|---|---|---|---|
| 1 | Li+ | - | - |
| 2 | Na+ | 0.15 ng | 1.5 μg/L |
| 3 | NH4+ | 0.3 ng | 3 μg/L |
| 4 | K+ | 0.6 ng | 6 μg/L |
| 5 | Ca2+ | 0.2 ng | 2 μg/L |
| 6 | Mg2+ | 0.2 ng | 2 μg/L |
- Column
- ：Shodex IC YK-421 (4.6 mm I.D. x 125 mm)
- Eluent
- ：5 mM Tartaric acid + 1 mM Dipicolinic acid + 1.5 g/L Boric acid aq.
- Flow rate
- ：1.0 mL/min
- Detector
- ：Non-suppressed conductivity
- Column temp.
- ：40 ℃
Sample Name Index
Operation Manual / Certificate of Analysis
Operation Manuals and Certificate of Analysis / Inspection Certificate for the following products can be downloaded here.
Product Name Index
Applications
- Monovalent and Divalent Cation Standards (1) (YK-421)
- Monovalent and Divalent Cation Standards (2) (YK-421)
- Monovalent and Divalent Cation Standards (3) (Dipicolinic Acid + Crown Ether Eluent) (YK-421)
- Monovalent and Divalent Cation Standards (4) (YK-421) (Phosphoric Acid Eluent)
- Monovalent and Divalent Cation Standards (5) (YK-421) (Phosphoric Acid + 18-Crown 6-Ether Eluent)
- Monovalent and Divalent Cation Standards (6) (Comparison of YS-50 and YK-421)
- Monovalent and Divalent Cation Standards (7) (Eluent Conteinig Acetonitrile) (YS-50)
- Monovalent and Divalent Cation Standards (8) (Ethylenediamine Containing Sample) (YS-50)
- Dynamic Range of Column (YK-421)
- Effects of Acetonitrile Concentration on Elution Volume (YK-421)
- Effects of Methanesulfonic Acid Concentration on Elution Time (YS-50)
- Effects of Flow Rate on Plate Number (YS-50)
- Effects of Temperature (YS-50)
- Effects of Sample Load on Plate Number (YS-50)
- Linearity of Calibration Curves (YS-50)
- Effects of Crown Ethers (YS-50)
- Tap Water (1) (YK-421)
- Analysis of Tap Water (2) (YK-412) (Phosphoric Acid Eluent)
- Monovalent and Divalent Cations Analysis in Tap Water (Ethylenediamine Containing Sample) (YS-50)
- Monovalent and Divalent Cations Analysis in River Water (Ethylenediamine Containing Sample) (YS-50)
- Mineral Water (YS-50)
- Sea Water (2) (YS-50)
- Red Wine (1) (YK-421)
- Red Wine (3) (YS-50)
- Serum (YK-421)
- Long Chain Alkylamines (YK-421)
- Trialkylamines (YK-421)
- Tetraalkylammoniums (YK-421)
- Analysis of Tetraalkylammoniums (YS-50)
- Alkylamines (2) (YK-421) (Phosphoric Acid + Acetonitrile)
- Ethanolamines and Alkylamines (YK-421) (Phosphoric Acid + Acetonitrile)
- Analysis of Ethanolamines and Alkylamines (YS-50)
- Cations and Alkylamines (YS-50)
- Analysis of Methylamines (YS-50)
- Analysis of Ethylamines (YS-50)
- Analysis of Short Chain Alkylamines (YS-50)
- Cation Analysis in the Presence of PEG (YS-50)
- Cation Analysis in the Presence of Albumin (YS-50)
- Quantification of N-Methylpyrrolidine in Cefepime for Injection According to USP-NF Method (YK-421)