毛细管柱等温气相色谱分析中理论塔板数的预测
Prediction of theoretical plate number in isothermal gas chromatographic analysis on capillary columns.
作者信息
Moretti P, Vezzani S, Castello G
机构信息
University of Genoa, Dipartimento di Chimica e Chimica Industriale, Via Dodecaneso 31, Genova I-16146, Italy.
出版信息
J Chromatogr A. 2006 Nov 10;1133(1-2):305-14. doi: 10.1016/j.chroma.2006.08.023. Epub 2006 Sep 7.
A method for the prediction of the efficiency of gas chromatographic analysis in isothermal conditions by using experimental data of 1-alcohols and n-alkanes measured on capillary columns filled with polar and non-polar stationary phases in isothermal and isobaric conditions is described. The theoretical plate height trend indicates the change of separation efficiency as a function of inlet pressure and column temperature. By evaluating the variation of the diffusion coefficients of the analysed compounds into the mobile and stationary phase it is possible to predict the column efficiency and the number of theoretical plates at any temperature.
描述了一种通过使用在等温等压条件下在填充有极性和非极性固定相的毛细管柱上测量的1-醇和正构烷烃的实验数据来预测等温条件下气相色谱分析效率的方法。理论塔板高度趋势表明分离效率随入口压力和柱温的变化。通过评估被分析化合物在流动相和固定相中的扩散系数变化，可以预测任何温度下的柱效率和理论塔板数。
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