کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
1202211 965060 2011 10 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Development of a new consumable-free thermal modulator for comprehensive two-dimensional gas chromatography
موضوعات مرتبط
مهندسی و علوم پایه شیمی شیمی آنالیزی یا شیمی تجزیه
پیش نمایش صفحه اول مقاله
Development of a new consumable-free thermal modulator for comprehensive two-dimensional gas chromatography
چکیده انگلیسی

A simple and cost-effective GC × GC modulator requiring no moving parts or consumables, hence suitable for field analysis and monitoring, was developed. The modulator was constructed from a specially designed Silcosteel® trapping capillary, installed outside the GC oven, and coated inside with polydimethylsiloxane (PDMS) stationary phase. Dual-stage modulation was accomplished by resistively heating alternate segments of the trap with a custom-designed capacitive discharge power supply. The performance of the proposed modulator was comparable to many GC × GC systems currently in use, with the injection band widths as low as 60 ms at half height. With proper selection of the stationary phase in the trap, the modulator can be used for the analysis of complex mixtures with volatility range spanning from n-C5 to n-C40.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Chromatography A - Volume 1218, Issue 20, 20 May 2011, Pages 3070–3079
نویسندگان
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