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首页> 外文期刊>Journal of chromatography, A: Including electrophoresis and other separation methods >Gas chromatography system constant database for 52 wall-coated, open-tubular columns covering the temperature range 60-140 degrees C
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Gas chromatography system constant database for 52 wall-coated, open-tubular columns covering the temperature range 60-140 degrees C

机译：气相色谱系统恒定数据库52壁涂层，覆盖温度范围60-140度C的露天管柱

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摘要

The solvation parameter model is used to characterize the separation properties of 52 fused-silica, wall-coated, open-tubular columns at 5 evenly-spaced intervals over the temperature range 60 to 140 degrees C. Statistical and principal component factor analysis are used to identify stationary phases of similar separation characteristics considered near selectivity equivalent and stationary phases with specific differences in selectivity for method development. The column database includes examples of all common stationary phase chemistries and manufacturing processes (surface preparation, deactivation, surface bonding, and immobilization). The influence of monomer composition on the separation properties of poly(siloxane) and poly(ethylene glycol) stationary phases is fully characterized and used to demonstrate where gaps in the selectivity space exist in the column database. Interfacial adsorption was observed as an important retention mechanism for biscyanopropylsiloxane-containing stationary phases for n-alkanes but for other compounds and stationary phases gas-liquid partition appears to be the dominant retention mechanism. There is poor agreement between McReynolds phase constants and the system constants of the solvation parameter model for the characterization of stationary phase selectivity. (C) 2019 Elsevier B.V. All rights reserved.
机译：溶剂化参数模型用于以60至140摄氏度的温度范围为52至140℃的均匀间隔间隔的52熔融二氧化硅，壁涂覆的开口管柱的分离性能。统计和主要成分因子分析用于识别近似选择性等同物和固定阶段的类似分离特性的固定相，具有方法开发的选择性特异性差异。柱状数据库包括所有常见的固定相化学和制造方法的示例（表面制备，停用，表面粘合和固定化）。单体组合物对聚（硅氧烷）和聚（乙二醇）固定相的分离性能的影响，并用来证明在列数据库中存在选择性空间中的间隙。观察界面吸附作为N-烷烃的含抗抗菌丙基硅氧烷的固定相的重要保留机制，但对于其他化合物和固定相气体分配似乎是主要的保留机制。 McReynolds相常数与溶剂化参数模型的系统常数之间存在较差的协议，用于表征固定相选择性。 （c）2019 Elsevier B.v.保留所有权利。

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