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Title: Sol-gel-coated oligomers as novel stationary phases for solid-phase microextraction
Authors: Basheer, C. 
Jegadesan, S. 
Valiyaveettil, S. 
Hian, K.L. 
Keywords: Bisphenol-A
Pesticides and alkylphenols
Solid-phase microextraction
Issue Date: 16-Sep-2005
Citation: Basheer, C., Jegadesan, S., Valiyaveettil, S., Hian, K.L. (2005-09-16). Sol-gel-coated oligomers as novel stationary phases for solid-phase microextraction. Journal of Chromatography A 1087 (1-2) : 252-258. ScholarBank@NUS Repository.
Abstract: Amphiphilic and hydrophilic oligomers were synthesized and coated on fused silica capillaries using a sol-gel technique. Sol-gel-coated capillaries were evaluated for the solid-phase microextraction and preconcentration of a wide variety of non-polar and polar analytes. Both types of coatings were stable under high temperature (up to 280°C). The extraction efficiency of the sol-gel coatings was evaluated for the extraction of both non-polar and polar analytes, including organochlorine pesticides, triazine herbicides, estrogens and alkylphenols (APs) and bisphenol-A (BPA). Compared with commercially available solid-phase microextraction (SPME) adsorbents such as poly(dimethylsiloxane)-divenylbenzene and polyacrylate, the new materials showed comparable selectivity and sensitivity towards both non-polar and polar analytes. The new coatings gave good linearity and detection limits. For example with triazines, a detection limit of
Source Title: Journal of Chromatography A
ISSN: 00219673
DOI: 10.1016/j.chroma.2005.02.024
Appears in Collections:Staff Publications

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