کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
1205562 1493721 2008 6 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Excess isotherms as a new way for characterization of the columns for reversed-phase liquid chromatography
موضوعات مرتبط
مهندسی و علوم پایه شیمی شیمی آنالیزی یا شیمی تجزیه
پیش نمایش صفحه اول مقاله
Excess isotherms as a new way for characterization of the columns for reversed-phase liquid chromatography
چکیده انگلیسی

In this work, we present the excess isotherm of acetonitrile for stationary phases with different coverage density. Data obtained with the minor disturbance method were compared with 29Si cross-polarization/magic-angle spinning NMR spectra to find dependence between acetonitrile adsorption on C18 chemically bonded stationary phases and coverage density of stationary phase. The preferential adsorption of acetonitrile on the bonded phase and the adsorption of water on the silica surface can be well correlated with the coverage density.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Chromatography A - Volume 1191, Issues 1–2, 16 May 2008, Pages 72–77
نویسندگان
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