title: Comparison of two aerosol-based detectors for the analysis of gabapentin in pharmaceutical formulations by hydrophilic interaction chromatography.
abstract: Comparison of hydrophilic interaction chromatography (HILIC) columns coupled with an evaporative light scattering detector (ELSD) or charged aerosol detector (CAD) was done for the detection of gabapentin in pharmaceutical formulations. The chromatographic separations were achieved on four HILIC columns: ZIC HILIC, ZIC pHILIC, Luna HILIC, and Atlantis HILIC. Experimental factors such as mobile phase composition, acetonitrile content, and mobile phase pH were evaluated. Validation of method was done in terms of linearity, sensitivity, accuracy, and precision. The performance of ELSD detection method is comparable to that of CAD. The intra-day and inter-day variations were below 1.7% and 3.2% for CAD and 2.8%, and 3.4% for ELSD, respectively. In addition, detection sensitivities of ELSD, CAD, and UV detectors were also compared for HILIC and reversed phase (RP) modes and the highest sensitivities were obtained in the HILIC mode when connected with CAD and ELSD. The developed HILIC aerosol based detection methods were successfully applied to the analysis of gabapentin in commercial tablets and capsules.
authors.affiliation: College of Pharmacy and Research Institute of Pharmaceutical Sciences, Seoul National University, Seoul 151-742, Republic of Korea.
authors.forename: Shaodong
authors.initials: S
authors.lastname: Jia
authors.forename: Jeong Hill
authors.initials: JH
authors.lastname: Park
authors.forename: Jeongmi
authors.initials: J
authors.lastname: Lee
authors.forename: Sung Won
authors.initials: SW
authors.lastname: Kwon
mesh_terms: D000336:Aerosols; D000588:Amines / Q000032:analysis*; D000700:Analgesics / Q000032:analysis*; D002851:Chromatography, High Pressure Liquid / Q000379:methods*; D003509:Cyclohexanecarboxylic Acids / Q000032:analysis*; D000077206:Gabapentin; D006863:Hydrogen-Ion Concentration; D057230:Limit of Detection; D004364:Pharmaceutical Preparations / Q000737:chemistry*; D015203:Reproducibility of Results; D005680:gamma-Aminobutyric Acid / Q000032:analysis*
chemical_list: D000336:Aerosols; D000588:Amines; D000700:Analgesics; D003509:Cyclohexanecarboxylic Acids; D004364:Pharmaceutical Preparations; D005680:gamma-Aminobutyric Acid; D000077206:Gabapentin