过量等温线作为反相液相色谱柱表征的一种新方法。
Excess isotherms as a new way for characterization of the columns for reversed-phase liquid chromatography.
作者信息
Buszewski B, Bocian Sz, Felinger A
机构信息
Department of Environmental Chemistry & Bioanalytics, Faculty of Chemistry, Nicolaus Copernicus University, Gagarin Street 7, 87-100 Toruń, Poland.
出版信息
J Chromatogr A. 2008 May 16;1191(1-2):72-7. doi: 10.1016/j.chroma.2007.11.074. Epub 2007 Nov 29.
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 (29)Si 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.
在本研究中，我们展示了不同覆盖密度固定相上乙腈的过量等温线。将采用微扰法获得的数据与（29）Si交叉极化/魔角旋转核磁共振谱进行比较，以找出乙腈在C18化学键合固定相上的吸附与固定相覆盖密度之间的关系。乙腈在键合相上的优先吸附以及水在二氧化硅表面的吸附与覆盖密度具有良好的相关性。
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