کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
1201433 1493527 2015 6 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Performance of graphene sheets as stationary phase for capillary gas chromatographic separations
ترجمه فارسی عنوان
عملکرد ورق های گرافن به عنوان فاز ثابت برای جداسازی کروماتوگرافی گاز مویرگی
کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه شیمی شیمی آنالیزی یا شیمی تجزیه
چکیده انگلیسی


• Graphene as a new π–π type of GC stationary phase.
• Specific retention mainly via π–π stacking and H-bonding interactions.
• High resolving ability for aromatics and polar analytes.

This work presents the investigation of graphene as a new type of stationary phase for capillary GC separations. Graphene capillary column (0.25 mm, i.d.) achieved column efficiency of 3100 plates/m determined by n-dodecane at 120 °C. The obtained McReynolds constants suggested the weakly polar nature of graphene sheets as GC stationary phase. As evidenced, graphene stationary phase differs from the conventional phase (5% phenyl polysiloxane) in its resolving ability and retention behaviors, and achieved better separation for the Grob and other mixtures. The advantages of graphene stationary phase may mainly originate from its specific π–π stacking interaction as well as H-bonding interaction. Furthermore, graphene column exhibited good repeatability with relative standard deviation (RSD%) in the range of 0.01–0.07% for run-to-run and 2.5–6.7% for column-to-column, respectively.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Chromatography A - Volume 1399, 19 June 2015, Pages 74–79
نویسندگان
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