Polydimethylsiloxane-functionalized monolithic silica column for reversed-phase capillary liquid chromatography |
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| Authors: | Zhou Qiaoli Zhang Pengfei Jia Li |
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| Affiliation: | Ministry of Education Key Laboratory of Laser Life Science and Institute of Laser Life Science, College of Biophotonics, South China Normal University, Guangzhou, P. R. China. |
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| Abstract: | A polydimethylsiloxane (PDMS)-modified monolithic silica column was prepared for performing reversed-phase capillary liquid chromatography. The prepared PDMS column has a permeability of 6.4×10(-14) m(2) with a plate height <9.2 μm. Alkylbenzenes and polycyclic aromatic hydrocarbons (PAHs) were well separated with the PDMS stationary phase, which exhibited similar selectivity and separation mechanism to that of octadecyl stationary phase. The hydrophobic interactions between the analytes and the PDMS stationary phase mainly play the roles for the separation of alkylbenzenes and PAHs. The characteristics of the PDMS column for the separation of alkylbenzenes and PAHs demonstrated that it would be a promising alternative to the octadecyl column. |
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| Keywords: | Monolithic silica column PDMS RP capillary LC |
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