کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
9748788 | 1493792 | 2005 | 5 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Analytical performances of two liquid crystals and their mixture as stationary phases in capillary gas chromatography
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
شیمی
شیمی آنالیزی یا شیمی تجزیه
پیش نمایش صفحه اول مقاله
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چکیده انگلیسی
Comparative gas chromatographic applications of two new liquid crystals called LCa and LCb and their equimolar mixture LCa + b were investigated. The thermal properties of LCa, LCb and LCa + b were established with differential scanning calorimetry (DSC) and polarizing microscopy. Differential scanning calorimetry of LCa + b showed that the melting or clearing temperature was intermediate between the corresponding temperatures of the pure compounds. Polarizing microscopy showed that the liquid crystal phase of A + B was nematic. The chromatographic separation abilities LCa, LCb and LCa + b were studied using fused silica capillary columns. Interesting analytical performances were obtained: isomeric separation of aromatics, polyaromatics, phenols.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Chromatography A - Volume 1087, Issues 1â2, 16 September 2005, Pages 52-56
Journal: Journal of Chromatography A - Volume 1087, Issues 1â2, 16 September 2005, Pages 52-56
نویسندگان
D. Bélaïdi, S. Sebih, S. Boudah, M.H. Guermouche, J.P. Bayle,