کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
10528729 | 960722 | 2005 | 11 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Comparison of column properties in reversed-phase chromatography: monolithic, cholesterolic and mixed bonded stationary phases
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موضوعات مرتبط
مهندسی و علوم پایه
شیمی
شیمی آنالیزی یا شیمی تجزیه
پیش نمایش صفحه اول مقاله
![عکس صفحه اول مقاله: Comparison of column properties in reversed-phase chromatography: monolithic, cholesterolic and mixed bonded stationary phases Comparison of column properties in reversed-phase chromatography: monolithic, cholesterolic and mixed bonded stationary phases](/preview/png/10528729.png)
چکیده انگلیسی
A commercial Chromolith C18 column and two new stationary phases with mixed ligands bonded on the Kromasil silica gel support, SG-MIX and SG-Chol, were characterized using simple tests based on the retention of non-polar, basic and acidic compounds. Polar and methylene selectivity tests in acetonitrile-water and methanol-water mobile phases revealed lower hydrophobicities of the SG-MIX and SG-Chol columns in comparison to the Chromolith column. The columns were further characterized using new test criteria - gradient oligomer capacity and isomeric selectivity and peak symmetry of naphthalene di-sulphonic acids in aqueous mobile phases. The cholesterolic column shows greater gradient oligomer selectivity for the separation of oligoethylene glycol samples than the SG-MIX and the Chromolith columns. Increased retention and peak tailing, but decreased isomeric selectivity for naphthalene-di-sulphonic acids was observed with the SG-MIX column, because of interactions with various polar bonded groups.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Analytica Chimica Acta - Volume 540, Issue 1, 17 May 2005, Pages 127-137
Journal: Analytica Chimica Acta - Volume 540, Issue 1, 17 May 2005, Pages 127-137
نویسندگان
Katarzyna KrupczyÅska, Pavel Jandera, BogusÅaw Buszewski,