کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
1211460 | 1493762 | 2006 | 6 صفحه PDF | دانلود رایگان |
![عکس صفحه اول مقاله: Polymer-coated hollow fiber microextraction combined with on-column stacking in capillary electrophoresis Polymer-coated hollow fiber microextraction combined with on-column stacking in capillary electrophoresis](/preview/png/1211460.png)
In this work, a novel microextraction method termed polymer-coated hollow fiber microextraction (PC-HFME) was developed in combination with capillary electrophoresis (CE). Polar dihydroxylated polymethalmethacrylate polymer was coated onto a porous propylene hollow fiber membrane and used as an adsorbent and that was placed in a stirred aqueous sample solution. Tumbling of the extraction device within the sample solution facilitated extraction. The amino alcohols (2-amino-1-phenylethanol, norephedrine, alprenolol and atenolol which are β-blocker drugs), were used as model compounds to investigate the extraction performance. No organic solvent was used in this procedure. The extract was then further concentrated through on-column stacking (normal stacking mode) during CE analysis. The detection limits ranged from 0.9 to 7 ng ml−1. Relative standard deviations (n = 6) ranged from 4 to 6%. The extraction of the amino alcohols in spiked wastewater effluent (representing a complex matrix) was evaluated using the developed procedure.
Journal: Journal of Chromatography A - Volume 1128, Issues 1–2, 22 September 2006, Pages 267–272