کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
7613066 1493577 2014 16 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Computerized optimization of flows and temperature gradient in flow modulated comprehensive two-dimensional gas chromatography
ترجمه فارسی عنوان
بهینه سازی کامپیوتری جریان و گرادیان دما در جریان کروماتوگرافی گاز جامد دو بعدی
موضوعات مرتبط
مهندسی و علوم پایه شیمی شیمی آنالیزی یا شیمی تجزیه
چکیده انگلیسی
Informational entropy and syentropy percent were used to optimize the flows in the first (1D) and in the second (2D) dimension (1Fm and 2Fm, respectively) as well as the temperature program rate (r) for the flow modulated GC × GC-FID separation of C6-C12 aromatic hydrocarbons in a low boiling petrochemical sample. The separations were performed on a column series consisting of a 25 m × 0.25 mm i.d. × 0.2 μm df of the polar ionic liquid SLB-IL 100 (1,9-di(3-vinylimidazolium)nonane bis(trifluoromethylsulfonyl)imide) in the first dimension and 5 m × 0.25 mm i.d. × 0.25 μm df apolar HP-5MS (5% phenyl-95% methylpolysiloxane) in the second dimension. A dependence of a distribution of individual aromatic hydrocarbons in the 2D retention plane on the carrier gas flows (1Fm, and 2Fm,) and temperature gradient (r) was examined in this study. It was found that informational entropy and synentropy percent are advantageous criteria to characterize the distribution of peaks in the 2D retention plane. Maximum informational entropy and synentropy percents correspond to the maximum distribution of C6-C12 aromatic hydrocarbons in the corresponding 2D retention plane gained by the given separation using optimized values of individual carrier gas column volume flows and the temperature rate at the temperature programmed GC × GC separations.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Chromatography A - Volume 1349, 4 July 2014, Pages 135-138
نویسندگان
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