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Separation Characteristics of Ibuprofen in Kromasil HPLC Column  

Park Joon Sub (Department of Chemical engineering, Chungnam National University)
Kim Byung Lip (Department of Chemical engineering, Chungnam National University)
Yoon Tae Ho (Department of Chemical engineering, Chungnam National University)
Kim In Ho (Department of Chemical engineering, Chungnam National University)
Publication Information
KSBB Journal / v.20, no.3, 2005 , pp. 244-249 More about this Journal
Abstract
Chiral separation of racemic ibuprofen was achieved on a Kromasil KR100-5CHI-TBB column. Some chromatographic parameters (resolution, number of theoretical plates, HETP, capacity factor) are calculated under different separation conditions such as change of mobile phase compositions (hexane / t-BME : 85 / 15, 75 / 15, 65 / 35, 55 /45) as well as acetic acid concentrations for adjusting pH (0.1 to 1 $v/v\%$). Flow rate versus number of theoretical plates and HETP were compared to evaluate column efficiency. To determine the adsorption isotherms, PIM (Pulsed Input Method) was carried out. At concentrations of racemic ibuprofen between 0.1 and 0.3 mg/ml, S- and R-ibuprofen have the same retention time of 4.48 and 5.81 min. Ibuprofen isotherms show a linear form under concentrations of 0.3 mg/ml with eluent (hexane / t-BME = 55 / 45).
Keywords
Ibuprofen; chiral separation; HPLC; PIM;
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