.cnoc rehte-6nworC-81I231456213465 l li05053546723545544666 0231231145560532154670501346572251223+ onChromatography Coumns (CationAnayss)Column Eluent Flow rate Detector Column temp. : 40 ˚C: Shodex IC YS-50: 4 mM Methanesulfonic acid aq.: 1.0 mL/min: Non-suppressed conductivityThe elution of cations (particularly K+) can be well controlled by modifying the eluent concentration, as it provides different complex formation rate.1Column Eluent Flow rate Detector Column temp. : 40 ˚C: Shodex IC YS-50: 4 mM Methanesulfonic acid + 18-Crown 6-ether aq.: 1.0 mL/min: Non-suppressed conductivityColumn Eluent Flow rate Detector Column temp. : 40 ˚C: Shodex IC YK-421 : 4 mM Nitric acid aq.: 1.0 mL/min: Non-suppressed conductivity 10 µL inj.106 mM3 mM1 mM0 mMSample : 1. Li+ 2 mg/L2. Na+ 10 mg/L+ 10 mg/L3. NH44. K+ 20 mg/L5. Mg2+ 10 mg/L6. Ca2+ 20 mg/L1520 minSample : 10 µL1. Li+ 2 mg/L2. Na+ 10 mg/L+ 10 mg/L3. NH44. K+ 20 mg/L5. Mg2+ 10 mg/L6. Ca2+ 20 mg/L101520 min10 µg/mL1. Monoethanolamine 20 µg/mL2. Diethanolamine 20 µg/mL3. N-Methylethanolamine 30 µg/mL4. Triethanolamine 30 µg/mL5. N-Methyldiethanolamine 6. N,N-Diethylethanolamine 30 µg/mL7. N-(2-Aminoethyl)ethanolamine 30 µg/mL101520minColumn Eluent Flow rate Detector Column temp. : 40 ˚C: Shodex IC YK-421: 5 mM Tartaric acid + 1 mM Dipicolinic acid + 24 mM Boric acid aq.: 1.0 mL/min: Non-suppressed conductivityColumn Eluent Flow rate Detector Column temp. : 40 ˚C15 µL inj.101520 min101520Sample : 50 µL1. NH45 mg/L5 mg/L2. Methylamine 3. Dimethylamine 5 mg/L4. Trimethylamine 20 mg/L10 mg/L5. Ethylamine 10 mg/L6. Propylamine 7. Butylamine 10 mg/LWith twice increased theoretical plate number, YS-50 provides a higher performance with improved peak shapes compared to YK-421. The quantitation of NH4+ in the presence of high Na+ content is also improved. TPMg2+Ca2+Resolution (Na+ / NH4+): Shodex IC YS-50: 4 mM Nitric acid + 1.5 mM 18-Crown 6-ether aq. /CH3CN = 90/10 : 1.0 mL/min: Non-suppressed conductivityColumn Eluent Flow rate Detector Column temp. : 25 ˚C: Shodex IC YK-421: 4 mM H3PO4 aq./CH3CN = 90/10: 1.0 mL/min: Non-suppressed conductivityYS-50YK-4216,9003,0006,6003,000YS-50YK-4212.52.1Sample : 50 µL1. Li+ 2 mg/L2. Na+ 10 mg/L+ 10 mg/L3. NH44. K+ 20 mg/L5. Mg2+ 10 mg/L6. Ca2+ 20 mg/L7. Ethylenediamine 50 mg/L253035min10minEffects of added crown ether in the eluentCation analysis using YS-50 and YK-421Amino alcoholsSimultaneous analysis of cations and ethylenediamineAlkylaminesYS-50YK-42135
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