Behavior of n-alkanes on poly(oxyethylene) capillary columns -: Evaluation of interfacial effects
Behavior of n-alkanes on poly(oxyethylene) capillary columns -: Evaluation of interfacial effects
复制标题
DOI：
10.1016/s0021-9673(01)01077-9
复制
发表时间：
2001-08-24
影响因子：
4.1
通讯作者：
Nardillo, AM
中科院分区：
文献类型：
--
作者：
González, FR;Castells, RC;Nardillo, AM
采用毛细管气相色谱法研究了正烷烃在聚氧乙烯上的溶剂化行为，通过分析六根膜厚为0.15-5μm的商用熔融石英毛细管柱的保留数据来区分和评估界面效应。毛细管柱中混合保留机制的表达式是根据一般特征的假设推导出来的。在 40 至 240 摄氏度的温度范围内测定了最多 28 个碳原子的正烷烃的分配系数。与其他作者一致，据观察，界面现象对色谱保留的影响很小，对于碳原子数少于 16 个的同系物，在 140 摄氏度以上可以忽略不计。 (C) 2001 Elsevier Science B.V. 保留所有权利。
The solvation behavior of n-alkanes on poly (oxyethylene) was studied employing capillary gas chromatography, Interfacial effects were discriminated and evaluated through the analysis of retention data from six commercial fused-silica capillary columns, having film thicknesses of 0.15-5 mum. Expressions for the mixed retention mechanism in capillary columns were deduced from assumptions of a general character. Partition coefficients were determined for the n-alkanes up to 28 carbon atoms, at temperatures ranging from 40 to 240 degreesC. In agreement with other authors, it was observed that interfacial phenomena contribute poorly to the chromatographic retention, being negligible over 140 degreesC for homologues with less than 16 carbons. (C) 2001 Elsevier Science B.V. All rights reserved.