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Evaluation of chiral separation based on bovine serum albumin–conjugated carbon nanotubes as stationary phase in capillary electrochromatography
Author(s) -
Bai Qiufang,
Zhang Chenning,
Zhao Yanyan,
Wang Chao,
Maihemuti Mairewaniguli,
Sun Chengpeng,
Qi Yan,
Peng Jinyong,
Guo Xingjie,
Zhang Zhen,
Fang Linlin
Publication year - 2020
Publication title -
electrophoresis
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.666
H-Index - 158
eISSN - 1522-2683
pISSN - 0173-0835
DOI - 10.1002/elps.202000003
Subject(s) - capillary electrochromatography , chromatography , triethoxysilane , carbon nanotube , bovine serum albumin , chemistry , electrochromatography , phase (matter) , monolithic hplc column , nanoparticle , matrix (chemical analysis) , chemical engineering , materials science , high performance liquid chromatography , capillary electrophoresis , organic chemistry , nanotechnology , engineering
In this work, we utilized adsorbed BSA and multiwalled carbon nanoparticles (BSA/MWCNTs) as a stationary phase in open tubular (OT) capillary for separation of chiral drugs. (3‐Aminopropyl)triethoxysilane was used to assist fabrication of BSA/MWCNTs‐coated OT column by covalent bonding. Incorporation of MWCNTs nanomaterials into a polymer matrix could increase the phase ratio and take advantage of the easy preparation of an open tubular CEC column. SEM was carried out to characterize the BSA/MWCNTs OT columns. The electrochromatographic performance of the OT columns was evaluated by separation of ketoprofen, ibuprofen, uniconazole, and hesperidin. The effects of MWCNTs concentration, background solution pH and concentration, and applied voltage on separation were investigated. Chiral separations of ketoprofen, ibuprofen, uniconazole, and hesperidin were achieved using the BSA/MWCNTs‐coated OT column with resolutions of 24.20, 12.81, 1.50, and 1.85, respectively. Their optimas were found in the 30 mM phosphate buffers at pH 5.0, 6.5, 7.0, and 6.5, respectively. In addition, the columns demonstrated good repeatability and stability with the run‐to‐run, day‐to‐day, and batch‐to‐batch RSDs of migration times less than 3.5%.