|
1
|
Mao Z, Chen J, Jiang D, Zhao N, Qin Y, Mao X, Fang F, Ma P. Itaconic Acid-Based Organic-Polymer Monolithic Column for Hydrophilic Capillary Electrochromatography and Its Application in Pharmaceutical Analysis. ACS OMEGA 2024; 9:1554-1561. [PMID: 38222631 PMCID: PMC10785275 DOI: 10.1021/acsomega.3c08031] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 10/13/2023] [Revised: 11/07/2023] [Accepted: 12/11/2023] [Indexed: 01/16/2024]
Abstract
Itaconic acid is an excellent hydrophilic monomer owing to the dicarboxylic group possessing strong polarity. This study reports on the preparation of a new organic-polymer monolithic column poly(itaconic acid-co-3-(acryloyloxy)-2-hydroxypropyl methacrylate) (poly(IA-co-AHM)) featuring excellent hydrophilic chromatography ability and its application in pharmaceutical analysis. The monolithic column was successfully synthesized by using the monomer itaconic acid and the cross-linker AHM through an in situ copolymerization method. Optical microscopy, scanning electron microscopy (SEM), and Fourier transform infrared spectroscopy (FTIR) were employed for the characterization of the poly(IA-co-AHM) monolithic column, and all of these demonstrated that the prepared itaconic acid-based monolithic column exhibited satisfactory permeability and a homogeneous porous structure. Owing to the carboxylic groups of itaconic acid, a cathodic electroosmotic flow (EOF) was generated on the itaconic acid-based monolithic column among the pH ranges of the mobile phase from 4.0 to 9.0. Depending on the powerful hydrophilic interactions, different kinds of polar substances, including thioureas, nucleoside drugs, sulfonamides, and polypeptides, were separated efficiently by the itaconic acid-based monoliths poly(IA-co-AHM). The separations of polar compounds were successfully realized, even at a lower level of 50% acetonitrile content on this monolithic column. The highest column efficiencies corresponding to N,N'-dimethylthiourea and idoxuridine were 102 720 and 124 267 N/m, respectively. The poly(IA-co-AHM) monolithic column displayed excellent repeatability, whose relative standard deviations (RSDs) of the retention time and peak area were both lower than 5.0%. All experimental results demonstrated that the new itaconic acid-functionalized monolithic column was greatly appropriate to separate the polar compounds under the HILIC mode.
Collapse
Affiliation(s)
- Zhenkun Mao
- Department
of Pharmacy, Henan Provincial People’s
Hospital, Zhengzhou 450003, Henan, China
- Department
of Pharmacy, People’s Hospital of
Zhengzhou University, Zhengzhou University, Zhengzhou 450003, Henan, China
| | - Jinxiu Chen
- Department
of Pharmacy, Henan Provincial People’s
Hospital, Zhengzhou 450003, Henan, China
- Department
of Pharmacy, People’s Hospital of
Zhengzhou University, Zhengzhou University, Zhengzhou 450003, Henan, China
| | - Dandan Jiang
- Department
of Pharmacy, Henan Provincial People’s
Hospital, Zhengzhou 450003, Henan, China
- Department
of Pharmacy, People’s Hospital of
Zhengzhou University, Zhengzhou University, Zhengzhou 450003, Henan, China
| | - Ningmin Zhao
- Department
of Pharmacy, Henan Provincial People’s
Hospital, Zhengzhou 450003, Henan, China
- Department
of Pharmacy, People’s Hospital of
Zhengzhou University, Zhengzhou University, Zhengzhou 450003, Henan, China
| | - Yinhui Qin
- Department
of Pharmacy, Henan Provincial People’s
Hospital, Zhengzhou 450003, Henan, China
- Department
of Pharmacy, People’s Hospital of
Zhengzhou University, Zhengzhou University, Zhengzhou 450003, Henan, China
| | - Xiangju Mao
- Zhengzhou
Institute of Multipurpose Utilization of Mineral Resources, CAGS, Zhengzhou 450006, China
| | - Fengqin Fang
- Department
of Pharmacy, Henan Provincial People’s
Hospital, Zhengzhou 450003, Henan, China
- Department
of Pharmacy, People’s Hospital of
Zhengzhou University, Zhengzhou University, Zhengzhou 450003, Henan, China
| | - Peizhi Ma
- Department
of Pharmacy, Henan Provincial People’s
Hospital, Zhengzhou 450003, Henan, China
- Department
of Pharmacy, People’s Hospital of
Zhengzhou University, Zhengzhou University, Zhengzhou 450003, Henan, China
| |
Collapse
|