Long chain alkylamines such as TBA (Tributylamine) and TPA (Tripropylamine) were analysed by ion-pair method using RI detector. However, this method is not so sensitive. Using IC YK-421 with nitric acid aqueous solution/ acetonitrile eluent and a conductivity detector, highly sensitive analysis of long chain alkylamines can be realized.The effect of acetonitrile concentration on elution volume of alkylamines are shown. When the acetonitrile concentration is lower than 50 %, the components which have shorter chain elute faster. And, to the contrary, when the acetonitrile concentration if higher than 50 %, the components which have longer chain elute faster. The reason of the difference can be explained by the the difference of the separation mode. When acetonitrile concentration is lower than 50 %, the separation mode is hydrohorbic interaction, and, when acetonitrile concentration is higher than 50 % the separation mode is ion exchange.
Sample : Alkylamines
THA, Trihexylamine
TBA, Tributylamine
TPA, Tripropylamine
TEA, Triethylamine
TMA, Trimethylamine
Column : Shodex IC YK-421 (4.6 mm I.D. x 125 mm) Eluent : 3 mM Nitric acid aq./CH3CN Flow rate : 1.0 mL/min Detector : Non-suppressed coductivity Column temp. : 40 °C
Sample Name Index
Operation Manual / Certificate of Analysis
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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)
- High Sensitive Detection of Cations (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)
- 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)