کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
10557165 968491 2005 7 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Preliminary study of the retention behavior for different compounds using cryogenic chromatography at different initial temperatures
موضوعات مرتبط
مهندسی و علوم پایه شیمی شیمی آنالیزی یا شیمی تجزیه
پیش نمایش صفحه اول مقاله
Preliminary study of the retention behavior for different compounds using cryogenic chromatography at different initial temperatures
چکیده انگلیسی
The Kováts indices (I) of 24 volatile organic compounds were measured at the different initial temperatures by a laboratory-made cryogenic chromatography. The results show that the correlations of the Kováts indices and the temperature are nonlinear at low initial temperature. Seven QSRR models were built using the heuristic method at different initial temperatures by calculating the quantitative chemical parameters of 24 organic compounds to study the relationship between the retention behavior and the molecular parameters. By studying the relationship between carbon and retention behavior, the capacity factor, and resolution of selected compounds, the contribution of gas-liquid interfacial adsorption process, which influences the retention behavior of solutes, is becoming more and more important with the decrease of the initial temperature.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Microchemical Journal - Volume 81, Issue 2, October 2005, Pages 184-190
نویسندگان
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