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Retention Behavior of Aromatic Amines with Some Ionic Liquids Mobile Phase in Semi-micro HPLC


Paper Type 
Contributed Paper
Title 
Retention Behavior of Aromatic Amines with Some Ionic Liquids Mobile Phase in Semi-micro HPLC
Author 
Yuppadee Nusai, Hitoshi Koizumi, Masaki Tachibana, Kazue Tani, and Nobutoshi Kiba
Email 
nusaijan@hotmail.com
Abstract:
This research was aimed at investigating the retention behavior of aromatic amines with some ionic liquid mobile phases in semi-micro HPLC to explain the unclear separation mechanism. Aromatic amines (m-aminophenol, benzylamine, N,N-dimethylaniline, p-aminobenzoic acid, p-aminophenol, aniline, p-toluidine and N-methylaniline) were examined. The retention behavior of aromatic amines is greatly affected by the column equilibration time, ionic liquid concentration, mobile phase pH and alkyl chain length on the imidazolium cation of the ionic liquid. Semi-micro HPLC was used to increase separation power and sensitivity, and in addition to save on the mobile phase of  the expensive ionic liquid. The separation mechanism involves ionic and hydrophobic interactions.
Start & End Page 
384 - 396
Received Date 
2010-01-05
Revised Date 
Accepted Date 
2010-05-03
Full Text 
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Keyword 
Ionic liquid, mobile phase, semi-micro HPLC, aromatic amine
Volume 
Vol.37 No.3 (SEPTEMBER 2010)
DOI 
Citation 
Nusai Y., Koizumi H., Tachibana M., Tani K. and Kiba N., Retention Behavior of Aromatic Amines with Some Ionic Liquids Mobile Phase in Semi-micro HPLC , Chiang Mai J. Sci., 2010; 37(3): 384-396.
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