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J Chromatogr A

Title:		Microchip gas chromatography column using magnetic beads coated with polydimethylsiloxane and metal organic frameworks
Author(s):		Sun X; Shi J; Men X; Li Y; Qu H; Chang Y; Hu J; Yan X; Guo W; Sun C; Duan X;
Address:		"A State Key Laboratory of Precision Measuring Technology and Instruments, Tianjin University, Tianjin 300072, China. State Key Laboratory of NBC Protection for Civilian, Beijing 102205, China. A State Key Laboratory of Precision Measuring Technology and Instruments, Tianjin University, Tianjin 300072, China. Electronic address: xduan@tju.edu.cn"
Journal Title:		J Chromatogr A
Year:		2023
Volume:		20230630
Issue:
Page Number:		464188 -
DOI:		10.1016/j.chroma.2023.464188
ISSN/ISBN:		1873-3778 (Electronic) 0021-9673 (Linking)
Abstract:		"Micro gas chromatography (muGC) using microfabricated silicon columns has been developed in response to the requirement for portable on-site gas analysis. Although different stationary phases have been developed, repeatable and reliable surface coatings in these rather small microcolumns remains a challenge. Herein, a new stationary phase coating strategy using magnetic beads (MBs) as carriers for micro column is presented. MBs modified with organopolysiloxane (MBs@OV-1) and a metal organic framework (MBs@HKUST-1) are deposited in on-chip microcolumns assisted with a magnetic field with an optimized modification process. MBs@OV-1 column showed a minimum HETP of 0.074 cm (1351 plates/m) of 62 cm/s. Mixtures of volatile organic compounds are successfully separated using MBs carried stationary phase which demonstrates that this technique has good chromatographic column efficiency. This method not only provides a novel coating process, washing and characterization of the stationary phases but also establishes a straightforward strategy for testing new absorbent materials for muGC systems"
Keywords:		"*Metal-Organic Frameworks Chromatography, Gas/methods Silicon Dimethylpolysiloxanes/chemistry Magnetic Phenomena Chromatographic column efficiency Magnetic beads carried stationary phase Micro gas chromatography Volatile organic compounds;"
Notes:		"MedlineSun, Xueyou Shi, Jingwen Men, Xiangdong Li, Yanna Qu, Hemi Chang, Ye Hu, Jizhou Yan, Xu Guo, Wenlan Sun, Chen Duan, Xuexin eng Netherlands 2023/07/10 J Chromatogr A. 2023 Aug 30; 1705:464188. doi: 10.1016/j.chroma.2023.464188. Epub 2023 Jun 30"